CN106236009B

CN106236009B - Eye fundus image acquisition methods and device, fundus camera

Info

Publication number: CN106236009B
Application number: CN201510593996.6A
Authority: CN
Inventors: 杜琳
Original assignee: Beijing Zhigu Ruituo Technology Services Co Ltd
Current assignee: Beijing Zhigu Ruituo Technology Services Co Ltd
Priority date: 2015-09-17
Filing date: 2015-09-17
Publication date: 2017-12-19
Anticipated expiration: 2035-09-17
Also published as: CN106236009A

Abstract

This application discloses a kind of eye fundus image acquisition methods and device, fundus camera, wherein, the eye fundus image acquisition methods include：Change the normal direction of at least part imaging area in imaging sensor according at least to the axis oculi direction of an eyes of an object, to improve the definition that the eyeground of an at least eyes for the object is imaged at least part imaging area；The image on the eyeground is obtained based on the fundus camera including described image sensor.The application is advantageous to improve the quality of fundus imaging.

Description

Eye fundus image acquisition methods and device, fundus camera

Technical field

The application is related to a kind of field of terminal technology, more particularly to a kind of eye fundus image acquisition methods and device, eyeground Camera.

Background technology

The eyeground optic nerve of human eye eye is the part that brain stretches out, and is the important organs of vision, the image on eyeground It can be acquired by instruments such as fundus cameras.

Fundus oculi disease can be carried out by eye fundus image or some general diseases provide early diagnosis or Index for diagnosis, therefore, The eye fundus image acquiring technology of high quality, diagnosis and research to ophthalmology disease or some general diseases have important value. In addition, as the continuous development of machine vision technique, fundus camera are increasingly extensive in the application of eye tracking equipment so that eye tracks Equipment can realize tracing of human eye based on eye fundus image, and the quality of eye fundus image is also deposited to the speed and/or precision of tracing of human eye In considerable influence.

Eye fundus image collection is carried out based on traditional fundus camera, usually requires that user watches a specific direction attentively, otherwise easily Cause fundus camera and eye optical axis direction inconsistent or deviate excessive, reduce the image quality of eye fundus image.

The content of the invention

The brief overview on the application has been given below, so as to provide on the application it is some in terms of it is basic Understand.It should be appreciated that this general introduction is not the exhaustive general introduction on the application.It is not intended to determine the pass of the application Key or pith, nor intended limitation scope of the present application.Its purpose only provides some concepts in simplified form, In this, as the preamble in greater detail discussed later.

The embodiment of the present application provides a kind of eye fundus image acquisition methods and device, fundus camera.

In a first aspect, the embodiment of the present application provides a kind of eye fundus image acquisition methods, including：

Change the normal of at least part imaging area in imaging sensor according at least to the axis oculi direction of an eyes of an object Direction, to improve the definition that the eyeground of an at least eyes for the object is imaged at least part imaging area；

The image on the eyeground is obtained based on the fundus camera including described image sensor.

Any eye fundus image acquisition methods provided with reference to the embodiment of the present application, optionally, an eyes include the One eyes；An at least eyes include first eye and/or the second eyes.

Any eye fundus image acquisition methods provided with reference to the embodiment of the present application, it is optionally, described according at least to a pair The axis oculi direction of an eyes for elephant changes the normal direction of at least part imaging area in imaging sensor, to improve the object The definition that at least eyeground of an eyes is imaged at least part imaging area, including：According to the axis oculi of the first eye Direction changes the normal direction of at least part imaging area in described image sensor, to improve the eyeground of the first eye in institute State the definition of at least part imaging area imaging.

Any eye fundus image acquisition methods provided with reference to the embodiment of the present application, it is optionally, described according to described first The axis oculi direction of eyes changes the normal direction of at least part imaging area in described image sensor, to improve the first eye Eyeground before the definition that at least part imaging area is imaged, in addition to：Determine the axis oculi direction of the first eye.

Any eye fundus image acquisition methods provided with reference to the embodiment of the present application, optionally, determine the first eye Axis oculi direction, including：According to the axis oculi direction of second eyes and an at least eyes and the image-forming range on eyeground, really The axis oculi direction of the fixed first eye.

Any eye fundus image acquisition methods provided with reference to the embodiment of the present application, it is optionally, described according to described first The axis oculi direction of eyes changes the normal direction of at least part imaging area in described image sensor, to improve the first eye The definition that is imaged at least part imaging area of eyeground, including：After at least part imaging area is tilted so as to tilt The normal direction of at least part imaging area matched with the axis oculi direction of the first eye, thus improve the First view The definition that the eyeground of eyeball is imaged at least part imaging area.

Any eye fundus image acquisition methods provided with reference to the embodiment of the present application, it is optionally, described according to described first The axis oculi direction of eyes changes the normal direction of at least part imaging area in described image sensor, to improve the first eye The definition that is imaged at least part imaging area of eyeground, including：Around the sphere using the first eye center as the centre of sphere Mobile at least part imaging area, so that the axis oculi side of the normal direction of at least part imaging area and the first eye To matching, the definition that the eyeground of the first eye is imaged at least part imaging area is thus improved.

Any eye fundus image acquisition methods provided with reference to the embodiment of the present application, it is optionally, described according to described first The axis oculi direction of eyes changes the normal direction of at least part imaging area in described image sensor, to improve the first eye Eyeground at least part imaging region definition, including：At least part imaging area is bent, so that after bending The normal direction for the part intersected at least part imaging area with the axis oculi direction of the first eye and the First view The axis oculi direction matching of eyeball, thus improves the definition that the eyeground of the first eye is imaged at least part imaging area.

Any eye fundus image acquisition methods provided with reference to the embodiment of the present application, optionally, based on including described image Before the fundus camera of sensor obtains the image on the eyeground, in addition to：Mobile described image sensor, so that described image Intersection point be present in the extended line of sensor and the axis oculi of the first eye.

Any eye fundus image acquisition methods provided with reference to the embodiment of the present application, optionally, the intersection point is positioned at described The central area of at least part imaging area.

Any eye fundus image acquisition methods provided with reference to the embodiment of the present application, it is optionally, described according to described first The axis oculi direction of eyes changes in described image sensor before the normal direction of at least part imaging area, in addition to：Determine institute State the intersection point of imaging sensor and the extended line of the axis oculi of the first eye；Described image sensor is determined according to the intersection point At least part imaging area.

Any eye fundus image acquisition methods provided with reference to the embodiment of the present application, it is optionally, described according at least to described The axis oculi direction of first eye changes the normal direction of at least part imaging area in described image sensor, to improve described first The definition that the eyeground of eyes is imaged at least part imaging area, including：According at least to the axis oculi side of the first eye To the normal direction for changing at least part imaging area in described image sensor, to improve the eyeground of second eyes described The definition of at least part imaging area imaging.

Any eye fundus image acquisition methods provided with reference to the embodiment of the present application, it is optionally, described according at least to described The axis oculi direction of first eye changes the normal direction of at least part imaging area in described image sensor, to improve described second The definition that the eyeground of eyes is imaged at least part imaging area, including：According to the axis oculi direction of the first eye and The image-forming range of the relatively described fundus camera of an at least eyes, change at least part imaging area in described image sensor Normal direction, to improve definition of the eyeground of second eyes at least part imaging area.

Any eye fundus image acquisition methods provided with reference to the embodiment of the present application, optionally, based on including described image Before the fundus camera of sensor obtains the image on the eyeground, in addition to：According to the curvature at least eyeground of an eyes Distributed intelligence changes the distribution of shapes of at least part imaging area.

With reference to the embodiment of the present application provide any eye fundus image acquisition methods, optionally, according to it is described at least at a glance Before the curvature distribution information on the eyeground of eyeball changes the distribution of shapes of at least part imaging area, in addition to：Described in obtaining extremely The curvature distribution information on the eyeground of few eyes.

Any eye fundus image acquisition methods provided with reference to the embodiment of the present application, optionally, based on including described image Before the fundus camera of sensor obtains the image on the eyeground, in addition to：Focusing adjustment is carried out to the fundus camera.

Any eye fundus image acquisition methods provided with reference to the embodiment of the present application, optionally, enter to the fundus camera Row focusing adjustment includes：Change in the axis oculi direction of the eyes according at least to an object in imaging sensor at least partly Before the normal direction of imaging area, the first focusing is carried out to the fundus camera and is adjusted.

Any eye fundus image acquisition methods provided with reference to the embodiment of the present application, optionally, enter to the fundus camera Row focusing adjustment includes：Change in the axis oculi direction of the eyes according at least to an object in imaging sensor at least partly After the normal direction of imaging area and before the image on the acquisition eyeground, the second focusing is carried out to the fundus camera and is adjusted.

Second aspect, the embodiment of the present application additionally provide a kind of eye fundus image acquisition device, including：

One imaging area adjusting module, the axis oculi direction for the eyes according at least to an object change in imaging sensor The normal direction of at least part imaging area, to improve the eyeground of an at least eyes for the object at least part imaging area The definition of imaging；

One eye fundus image acquisition module, for obtaining the eyeground based on the fundus camera including described image sensor Image.

Any eye fundus image acquisition device provided with reference to the embodiment of the present application, optionally, an eyes include the One eyes；An at least eyes include first eye and/or the second eyes.

Any eye fundus image acquisition device provided with reference to the embodiment of the present application, optionally, the imaging area adjust mould Block includes：One first imaging area adjusts submodule, for changing described image sensing according to the axis oculi direction of the first eye The normal direction of at least part imaging area in device, it is imaged with improving the eyeground of the first eye at least part imaging area Definition.

Any eye fundus image acquisition device provided with reference to the embodiment of the present application, optionally, described device also includes：One Axis oculi direction determining mould, for determining the axis oculi direction of the first eye.

Any eye fundus image acquisition device provided with reference to the embodiment of the present application, optionally, the axis oculi direction determine Module includes：Direction of principal axis determination sub-module at a glance, for the axis oculi direction according to second eyes and an at least eyes With the image-forming range on eyeground, the axis oculi direction of the first eye is determined.

Any eye fundus image acquisition device provided with reference to the embodiment of the present application, optionally, first imaging area are adjusted Whole submodule includes：One tilt control unit, for tilting at least part imaging area so that at least portion described in after tilting Divide the normal direction of imaging area to be matched with the axis oculi direction of the first eye, thus improve the eyeground of the first eye in institute State the definition of at least part imaging area imaging.

Any eye fundus image acquisition device provided with reference to the embodiment of the present application, optionally, first imaging area are adjusted Whole submodule includes：One sphere mobile control unit, for around using the first eye center as described in the sphere movement of the centre of sphere At least part imaging area, so that the normal direction of at least part imaging area matches with the axis oculi direction of the first eye, Thus the definition that the eyeground of the first eye is imaged at least part imaging area is improved.

Any eye fundus image acquisition device provided with reference to the embodiment of the present application, optionally, first imaging area are adjusted Whole submodule includes：One bending control unit, for bending at least part imaging area, so that at least portion after bending Divide in imaging area the normal direction for the part intersected with the axis oculi direction of the first eye and the axis oculi side of the first eye To matching, the definition that the eyeground of the first eye is imaged at least part imaging area is thus improved.

Any eye fundus image acquisition device provided with reference to the embodiment of the present application, optionally, described device also includes：One Mobile control module, for moving described image sensor, so that described image sensor and the axis oculi of the first eye Intersection point be present in extended line.

Any eye fundus image acquisition device provided with reference to the embodiment of the present application, optionally, the intersection point is positioned at described The central area of at least part imaging area.

Any eye fundus image acquisition device provided with reference to the embodiment of the present application, optionally, described device also includes：One Intersection point determining module, for determining described image sensor and the intersection point of the extended line of the axis oculi of the first eye；One imaging Area's determining module, for determining at least part imaging area of described image sensor according to the intersection point.

Any eye fundus image acquisition device provided with reference to the embodiment of the present application, optionally, the imaging area adjust mould Block includes：One second imaging area adjusts submodule, changes described image for the axis oculi direction according at least to the first eye The normal direction of at least part imaging area in sensor, to improve the eyeground of second eyes at least part imaging area The definition of imaging.

Any eye fundus image acquisition device provided with reference to the embodiment of the present application, optionally, second imaging area are adjusted Whole submodule includes：One imaging area adjustment unit, for the axis oculi direction according to the first eye and an at least eyes The image-forming range of relatively described fundus camera, change the normal direction of at least part imaging area in described image sensor, to carry Definition of the eyeground of high second eyes at least part imaging area.

Any eye fundus image acquisition device provided with reference to the embodiment of the present application, optionally, described device also includes：One Distribution of shapes adjusting module, for described at least part of curvature distribution information change according at least eyeground of an eyes into As the distribution of shapes in area.

Any eye fundus image acquisition device provided with reference to the embodiment of the present application, optionally, described device also includes：One Eyeground curvature distribution data obtaining module, for obtaining the curvature distribution information at least eyeground of an eyes.

Any eye fundus image acquisition device provided with reference to the embodiment of the present application, optionally, described device also includes：One Focusing adjusting module, for carrying out focusing adjustment to the fundus camera.

Any eye fundus image acquisition device provided with reference to the embodiment of the present application, optionally, the focusing adjusting module Including：One first focusing adjustment submodule, for changing described image sensor at least partly in the imaging area adjusting module Before the normal direction of imaging area, the first focusing is carried out to the fundus camera and is adjusted.

Any eye fundus image acquisition device provided with reference to the embodiment of the present application, optionally, the focusing adjusting module Including：One second focusing adjustment submodule, for changing described image sensor at least partly in the imaging area adjusting module After the normal direction of imaging area and before the image on the eye fundus image acquisition module acquisition eyeground, to the eyeground Camera carries out the second focusing adjustment.

The third aspect, the embodiment of the present application additionally provide a kind of fundus camera, including：

One imaging sensor, a processor, a communication interface, a memory and a communication bus；The processor, institute State communication interface, the memory and described image sensor and mutual communication is completed by the communication bus；

The memory is used to deposit at least one instruction；The instruction makes to operate below the computing device：

Change at least part imaging area in described image sensor according at least to the axis oculi direction of an eyes of an object Normal direction, to improve the definition that the eyeground of an at least eyes for the object is imaged at least part imaging area；

The image on the eyeground is obtained based on described image sensor.

The embodiment of the present application provide technical scheme, according at least to certain simple eye axis oculi direction to imaging sensor at least It is to improve simple eye eyeground of the object or another that the normal direction of part imaging area, which is adjusted and adjusts process, The definition that one simple eye eyeground or the respective eyeground of eyes are imaged at least part imaging area is the condition of convergence, by This is advantageous to the departure degree for reducing or even eliminating the optical axis of axis oculi direction and fundus camera corresponding to eyeground to be taken the photograph, based on the eye Bottom camera need not require that such as people's object watches a certain specific direction attentively, you can the eye fundus image of better quality be collected, to meet The practical application requests such as disease research, eye tracking.

By below in conjunction with detailed description of the accompanying drawing to the alternative embodiment of the application, the these and other of the application Advantage will be apparent from.

Brief description of the drawings

The application can be by reference to being better understood, wherein in institute below in association with the description given by accompanying drawing Have and same or analogous reference has been used in accompanying drawing to represent same or similar part.The accompanying drawing is together with following Describe in detail and include in this manual and formed the part of this specification together, and for this is further illustrated The alternative embodiment of application and the principle and advantage for explaining the application.In the accompanying drawings：

Fig. 1 is a kind of eye fundus image acquisition methods flow chart that the embodiment of the present application provides；

Fig. 2 a are the (eyes of schematic diagram one for the eye fundus image that eye is obtained based on fundus camera that the embodiment of the present application provides Optical axis direction and the alignment of imaging sensor normal direction)；

Fig. 2 b are the (eyes of schematic diagram two for the eye fundus image that eye is obtained based on fundus camera that the embodiment of the present application provides Optical axis direction and imaging sensor normal direction mismatch)；

Fig. 2 c are the (image of schematic diagram three for the eye fundus image that eye is obtained based on fundus camera that the embodiment of the present application provides At least part imaging area is tilted to change its normal direction in sensor)；

Fig. 2 d are the (image of schematic diagram four for the eye fundus image that eye is obtained based on fundus camera that the embodiment of the present application provides At least part imaging area is bent to change its normal direction in sensor)；

Fig. 3 is the flexible image sensor example that the embodiment of the present application provides；

Fig. 4 is the imaging sensor example for multiple imaging area array distributions that the embodiment of the present application provides；

Fig. 5 is the logic diagram for the first eye fundus image acquisition device that the embodiment of the present application provides；

Fig. 6 is the logic diagram for second of eye fundus image acquisition device that the embodiment of the present application provides；

Fig. 7 is the logic diagram for the third eye fundus image acquisition device that the embodiment of the present application provides；

Fig. 8 is the logic diagram for the 4th kind of eye fundus image acquisition device that the embodiment of the present application provides；

Fig. 9 is the logic diagram for the fundus camera that the embodiment of the present application provides.

It will be appreciated by those skilled in the art that element in accompanying drawing is just for the sake of showing for the sake of simple and clear, And be not necessarily drawn to scale.For example, the size of some elements may be exaggerated relative to other elements in accompanying drawing, with Just it is favorably improved the understanding to the embodiment of the present application.

Embodiment

The one exemplary embodiment of the application is described in detail hereinafter in connection with accompanying drawing.Rise for clarity and conciseness See, do not describe all features of actual embodiment in the description.It should be understood, however, that developing any this reality It must be made during embodiment much specific to the decision of embodiment, to realize the objectives of developer, example Such as, those restrictive conditions related to system and business are met, and these restrictive conditions may be with embodiment not Change together.In addition, it will also be appreciated that although development is likely to be extremely complex and time-consuming, to having benefited from For those skilled in the art of present disclosure, this development is only routine task.

Herein, it is also necessary to explanation is a bit, in order to avoid having obscured the application because of unnecessary details, in accompanying drawing and It merely depict in explanation with according to the closely related apparatus structure of the scheme of the application and/or processing step, and eliminating pair With the application relation is little, expression and description of part known to persons of ordinary skill in the art and processing.

(identical label represents identical element in some accompanying drawings) and embodiment below in conjunction with the accompanying drawings, to the tool of the application Body embodiment is described in further detail.Following examples are used to illustrate the application, but are not limited to scope of the present application.

It will be understood by those skilled in the art that the term such as " first ", " second " in the application be only used for distinguishing it is asynchronous Suddenly, equipment or module etc., any particular technology implication is neither represented, does not also indicate that the inevitable logical order between them.

Fig. 1 is a kind of eye fundus image acquisition methods flow chart that the embodiment of the present application provides.What the embodiment of the present application provided The executive agent of eye fundus image acquisition methods can be a certain eye fundus image acquisition device.The equipment of the eye fundus image acquisition device The form of expression is unrestricted, such as the eye fundus image acquisition device can be a certain independent part；Or the eye fundus image Acquisition device can be integrated in as a certain functional module in an equipment with eye fundus image acquisition function, described to have eyeground figure As the equipment of acquisition function may include but be not limited to the eye tracking equipment or other electronic equipments of fundus camera including fundus camera Deng the embodiment of the present application is not intended to limit to this.Specifically as shown in figure 1, a kind of eye fundus image that the embodiment of the present application provides obtains Method includes：

S101：Change at least part imaging area in imaging sensor according at least to the axis oculi direction of an eyes of an object Normal direction, to improve the definition that the eyeground of an at least eyes for the object is imaged at least part imaging area.

The object may include people or have the animal of same or similar structure with the eyes of people.The object generally has There are two eyes, i.e. left eye and right eye, the imaging sensor of fundus camera can be changed according at least to the axis oculi direction of certain simple eye eyeball The normal direction of middle at least part imaging area, with improve the simple eye eyeground of the object or another simple eye eyeground or The definition that the respective eyeground of eyes is imaged at least part imaging area.The axis oculi direction of eyes can be reflected to a certain extent The direction of gaze or direction of visual lines of the object.

S102：The image on the eyeground is obtained based on the fundus camera including described image sensor.

Present inventor has found during the embodiment of the present application is put into practice, in traditional fundus camera imaging sensor into As area's generally plane, the normal direction of the imaging sensor is parallel with the optical axis direction of fundus camera, based on traditional eyeground Camera carries out eye fundus image collection, it is desirable to which user watches a specific direction attentively, thereby guarantees that the eyeground of the user can be in image sensing More visible picture is formed on device.If user does not watch the specific direction attentively, be easily caused the user eyes optical axis direction and The normal direction of imaging sensor, which exists, largely to be deviateed, the user eyeground can blur-free imaging on the image sensor focus Region is smaller poor even without focus region, the image quality of eye fundus image.

And the embodiment of the present application provide technical scheme, according at least to certain simple eye axis oculi direction to imaging sensor extremely The normal direction of small part imaging area be adjusted and adjust process be with improve the simple eye eyeground of the object or The definition that another simple eye eyeground or the respective eyeground of eyes are imaged at least part imaging area is the condition of convergence, Thus be advantageous to reduce or even eliminate the departure degree of the optical axis of axis oculi direction and fundus camera corresponding to eyeground to be taken the photograph, based on this Fundus camera need not require that such as people's object watches a certain specific direction attentively, you can the eye fundus image of better quality be collected, with full The practical application requests such as sufficient disease research, eye tracking.

In the S101, an eyes may include that first eye, an at least eyes include first eye and/or the Two eyes.The first eye can be the left eye of object (as " people "), an at least eyes include left eye or right eye or Person's left eye and right eye.Or the first eye can be the object right eye, an at least eyes include left eye or Right eye or left eye and right eye.

(1) a kind of optional implementation, the S01 include：According to changing the axis oculi direction of the first eye The normal direction of at least part imaging area in imaging sensor, with improve the eyeground of the first eye described at least part into The definition being imaged as area.The program is according at least portion in the optical axis direction adaptively changing described image sensor of first eye Divide the normal direction of imaging area so that the optical axis of normal direction and the first eye after at least part imaging area change Direction matches, and reduces and even avoids the deviation of the two, which thereby enhances the convenience for obtaining eye fundus image and flexibility, improves The quality on the eyeground of the first eye obtained at least part imaging area.

The first eye can be the left eye of the object, or, the first eye can be the right eye of the object.Institute Stating the axis oculi direction of first eye can obtain in advance；It is or described according to the axis oculi direction of the first eye change figure As the normal direction of at least part imaging area in sensor, it is imaged with improving the eyeground of the first eye in described at least part Before the definition of area's imaging, the axis oculi direction of the first eye is may also include determining that, the program is advantageous to obtain institute in real time The axis oculi direction of first eye is stated, and adaptation tune is carried out to the normal direction of at least part imaging area of imaging sensor accordingly It is whole, thus meet such as eye-tracking application demand.The acquisition modes in the axis oculi direction of the first eye are very flexible, this Shen Please embodiment this is not intended to limit.For example, the first eye eye fundus image minimum with eyeground benchmark image difference can be obtained, And the optical axis direction of the first eye is determined according to the feature of the eyes during eye fundus image of acquisition；Or in another example, also To the eyeground projected spot image of the first eye, the light spot image of projection imagewise pattern and former light on eyeground can be obtained The position of spot pattern, determine the eye optical axis direction of the first eye.For another example it may also be combined with the optical axis direction of the second eyes An at least eyes and the image-forming range on eyeground, determine optical axis direction of the first eye etc..

The big I of the imaging area of described image sensor is flexibly set, for example, the imaging area of described image sensor is big I and eyeground suitable size, are smaller than eyeground size, or can be more than eyeground size.Carrying out the method for described image sensor When line direction adjusts, the method for described image sensor entirety imaging area can be changed according at least to the axis oculi direction of the first eye Line direction, to improve the definition that the eyeground of the first eye is imaged in described image sensor entirety imaging area.Or When carrying out the normal direction adjustment of described image sensor, the figure can be changed according at least to the axis oculi direction of the first eye As the normal direction of Sensor section imaging area, the part imaging area that normal direction changes is the corresponding first eye The imaging area of fundus imaging, by way of changing the normal direction of the part imaging area, improve the eye of the first eye The definition that bottom is imaged in the part imaging area；If it is appreciated that the axis oculi direction of the first eye changes, become The eyeground of the first eye may be identical in imaging area corresponding to described image sensor before and after change, it is also possible at least portion Point factor such as difference, its specific imaging area and the imaging gross area of imaging parameters and imaging sensor is relevant.

In practical application, can according to the axis oculi direction of the first eye change described image sensor at least partly into As area normal direction and normal direction change be in the clear of at least part imaging area with the eyeground of the first eye Clear degree is the condition of convergence, and it is very flexible that it changes the specific implementation of normal direction.Normal direction change after, it is described at least The normal direction of part imaging area is matched with the axis oculi direction of the first eye, and the matching is interpreted broadly, it may include but It is not limited to one of scenario described below：The normal direction of at least part imaging area is aligned with the first eye direction, is coaxial, flat It is capable, parallel and be smaller than an allowable distance, angle allows angle, angle to allow angle less than one less than one and be smaller than one Allowable distance, departure degree meet an admissible condition.

For example, described change at least part imaging area in described image sensor according to the axis oculi direction of the first eye Normal direction, to improve the definition that the eyeground of the first eye is imaged at least part imaging area, including：Tilt At least part imaging area is so that the eye of normal direction and the first eye of at least part imaging area after tilting Direction of principal axis matches, and thus improves the definition that the eyeground of the first eye is imaged at least part imaging area.Optionally Using in example, if a certain specific direction of the eye gaze of people, the optical axis direction of first eye and the camera light of fundus camera Direction of principal axis is coaxial, namely the normal direction alignment of the imaging sensor of the optical axis direction of first eye and fundus camera, such as Fig. 2 a It is shown；If the first eye of people changes direction of gaze, the optical axis direction of first eye changes, then the now optical axis of first eye Direction and the camera optical axis direction of fundus camera are not coaxial, the optical axis direction of first eye and the imaging sensor of fundus camera There is larger skew in normal direction, reduce the focus region of fundus imaging, as shown in Figure 2 b, the image quality of eye fundus image compared with Difference；The situation can be according to the normal direction of at least part imaging area in the optical axis direction tilted image sensor of first eye, such as , can be according to the whole imaging surface of the optical axis direction tilted image sensor of first eye shown in Fig. 2 c, imaging sensor after inclination Overall normal direction is parallel with the optical axis direction of first eye and the two distance is less than an allowable distance, thereby increases eyeground The focus region of imaging, the quality of fundus imaging is improved, or, it can be sensed according to the optical axis direction tilted image of first eye Part imaging area corresponding with eyeground in device, increase the focus region of fundus imaging, thus improve the quality of fundus imaging.Should Scheme is by way of at least part imaging area in tilted image sensor so that the method for at least part imaging area after inclination Line direction is matched with the axis oculi direction of first eye to be taken the photograph, and scheme is simply easily realized, improves the eyeground of the first eye Image quality.

In another example described changed according to the axis oculi direction of the first eye in described image sensor is at least partly imaged The normal direction in area, to improve the definition that the eyeground of the first eye is imaged at least part imaging area, including：Around Sphere using the first eye center as the centre of sphere moves at least part imaging area, so that at least part imaging area Normal direction matches with the axis oculi direction of the first eye, thus improves the eyeground of the first eye in described at least part The definition of imaging area imaging.The first eye center can carry out table through but not limited to the eyeground center of the first eye Show, at least part imaging area of described image sensor is moved around the sphere using the first eye center as the centre of sphere, can be changed The normal direction of at least part imaging area, appropriate angle and distance is moved around the sphere, described at least part can be made The normal direction of imaging area matches with the axis oculi direction of the first eye, thus improves the eyeground of the first eye described The definition of at least part imaging area imaging, in addition, the city of at least part imaging area described in the program is around with the first eye The sphere at center move and change its normal direction, therefore, will not change in the moving process of at least part imaging area Become the eyeground of first eye and the image-forming range of at least part imaging area, thus reduce because of at least part imaging area Influence of the movement to the focusing state of the fundus camera, under some situations, even if at least part imaging area is around described Sphere moves the focusing state that will not also destroy the fundus camera, avoids the troublesome operation of repetition focusing.

For another example described changed according to the axis oculi direction of the first eye in described image sensor is at least partly imaged The normal direction in area, to improve definition of the eyeground of the first eye at least part imaging region, including：Bending At least part imaging area, so that the axis oculi direction phase at least part imaging area after bending with the first eye The normal direction of the part of friendship matches with the axis oculi direction of the first eye, thus improves the eyeground of the first eye in institute State the definition of at least part imaging area imaging.Described image sensor is flexible, and the concrete structure and form of its device are not Limitation.It is described to be bent into broad understanding, include the Curvature varying in continuous imaging face, or including different imaging sub-districts in depth side It is upward to be dislocatedly distributed etc..For example, described image sensor can be flexible image sensor, as shown in figure 3, the application passes through The effects such as external force can carry out the imaging surface entirety or part of flexible image sensor the bending of certain degree, that is, To say, flexible image sensor can integrally change its degree of crook, can also be imaged sub-district and individually carry out bending control for granularity, by This changes the distribution of shapes of flexible image sensor imaging surface.In another example as shown in figure 4, described image sensor may include Between multiple imaging areas (or imaging sub-district) of array distribution, at least two imaging areas (or imaging sub-district) by elastomeric element or Controllable deforming material portion (such as photic deformable material portion, mangneto deformable material portion, piezoelectric material etc.) deformable connecting portion Part connects, to form the imaging surface of an entirety；By controlling the deformation of deformable connection member, can control described at least two Dislocation is (as recessed or motionless in being partly imaged sub-district protrusion, part imaging sub-district in the depth direction for imaging area (or imaging sub-district) Etc. mode, to be formed, imaging sensor is overall or the broad sense of part is bent), thus change described image sensor imaging surface Global shape is distributed.It is appreciated that according to the needs of practical application, the imaging area (or imaging sub-district) of above-mentioned array distribution and soft Property imaging sensor also may be used in combination, formed the flexible imaging sensor in a surface.By bending described image sensor In the mode of corresponding at least part imaging area is currently imaged with eyeground, the normal side of at least part imaging area can be changed To as shown in Figure 2 d, the normal direction of the different piece of at least part imaging area is not quite similar after bending, it may be determined that described The part intersected at least part imaging area with the axis oculi direction of the first eye and by the normal direction of the part with it is described The axis oculi direction matching of first eye for bending control the condition of convergence, thus improve the eyeground of the first eye it is described extremely The definition of small part imaging area imaging.The program can by bend in described image sensor be currently imaged with eyeground it is corresponding At least part imaging area mode, make the portion intersected at least part imaging area with the axis oculi direction of the first eye Point normal direction matched with the axis oculi direction of the first eye, thus improve the eyeground of the first eye it is described at least The image quality of part imaging area.Further, since eyeground is usually curved surface, the program controls at least portion of described image sensor Divide imaging area bending, the conventional art being imaged relative to imaging sensor as a plane, the program is gone back to a certain extent Be advantageous at least part imaging area and eyeground form fit, increase focus region, and then improve the image quality on eyeground.

Optionally, before the image that the eyeground is obtained based on the fundus camera including described image sensor, in addition to： Mobile described image sensor, so that described image sensor and the extended line of the axis oculi of the first eye have intersection point. Under some situations, the imaging area of imaging sensor is smaller or not sufficiently large in fundus camera, and the movement of first eye sight is super Certain limit is crossed, then intersection point may be not present with the imaging area of imaging sensor in the extended line of the axis oculi of the first eye, should Situation, eye fundus image can not be obtained if not handling imaging sensor.Passed therefore, the program may move described image Sensor, mobile mode can flexibly determine according to the needs of practical application, be such as currently located in plane and move in imaging sensor The imaging sensor, or, some planar movement of plane imaging sensor etc. can be currently located in parallel image sensor Deng so that after mobile there is intersection point in imaging sensor and the axis oculi extended line of first eye, thereby guarantee that imaging sensor can be adopted Collect the imaging light on eyeground and be imaged.It is further alternative, the axis oculi extended line and described image of the first eye The intersection point of sensor, need to carry out the center of at least part imaging area of normal direction adjustment positioned at described image sensor Region, the central area are non-edge, can be the certain radius using the center of at least part imaging area as round dot Border circular areas, the intersection point can be at least part imaging area center, or, the intersection point can be slightly deviate described in extremely Some point of small part imaging district center, etc.；The program is advantageous at least part imaging area and obtains relatively uniform distribution Eye fundus image.On the other hand, determined from described image sensor described at least part of pending normal direction adjustment into As from the perspective of area, described changed according to the axis oculi direction of the first eye in described image sensor is at least partly imaged Before the normal direction in area, in addition to：Determine described image sensor and the intersection point of the extended line of the axis oculi of the first eye； At least part imaging area of described image sensor is determined according to the intersection point；Eye of the program based on the first eye The extended line of axle and the intersection point of described image sensor are reference, determine pending normal direction adjustment in described image sensor At least part imaging area so that at least part imaging area determined can obtain the imaging on eyeground and obtain The imaging on eyeground can be in relatively uniform distribution.

(2) another optional implementation, the S101 include：Change according at least to the axis oculi direction of the first eye Become described image sensor at least part imaging area normal direction, with improve the eyeground of second eyes it is described at least The definition of part imaging area imaging.In the program, described image sensor can be the eyeground for gathering second eyes The imaging sensor of image, or, described image sensor can be available for gathering the first eye and second eyes The imaging sensor of the image on respective eyeground, described image sensing can be changed according at least to the axis oculi direction of the first eye It is used for the normal direction of at least part imaging area to the fundus imaging of second eyes in device, thus improves described second The definition that the eyeground of eyeball is imaged at least part imaging area.

Optionally, can be according to the axis oculi direction of the first eye and the relatively described fundus camera of an at least eyes Image-forming range, change the normal direction of at least part imaging area in described image sensor, to improve the eye of second eyes Definition of the bottom at least part imaging area.There is the statistical relationships such as certain angle in the eyes of such as people's object, by The axis oculi direction of one eyes and image-forming range at least at a glance apart from fundus camera combine the statistical relationship (equivalent to indirectly really Determined the axis oculi direction of second eyes), it may be determined that imaging sensor be used for the second eyes fundus imaging at least part into As area, change at least part imaging area normal direction and with the eyeground of second eyes described at least part into Change the condition of convergence of control as the quality of area's imaging increases for above-mentioned normal direction, so, based on the eyeground Camera can obtain image of the eyeground in better quality formed by least part imaging area of second eyes.It is described extremely Can be fundus camera described in the first eye or second eye distance less at a glance apart from the image-forming range of fundus camera Image-forming range, or, can the distance of fundus camera described in the object distance be used as described image-forming range, etc..

It is appreciated that in actual application, imaging sensor can be changed according to the axis oculi direction of the first eye In be used for the normal direction at least part imaging area of the fundus imaging of the first eye, to improve the first eye Quality of the eyeground at least part imaging area imaging for the fundus imaging to the first eye；And can basis The axis oculi direction of the first eye and described at least at a glance the distance between with the fundus camera, changes in imaging sensor For the normal direction of at least part imaging area of the fundus imaging to second eyes, to improve the eye of second eyes Quality of the bottom at least part imaging area imaging for the fundus imaging to second eyes；Thus achieve difference Improve the imaging on the respective eyeground of eyes.In addition, the adjustment of each self-corresponding imaging area of eyes, can timesharing adjusted with specific aim It is whole, or, the adjustment of each self-corresponding imaging area of eyes, it can carry out simultaneously to improve efficiency.

Any optional implementation provided with reference to the embodiment of the present application, optionally, based on being passed including described image Before the fundus camera of sensor obtains the image on the eyeground, in addition to：According to the curvature at least eyeground of an eyes point Cloth information changes the distribution of shapes of at least part imaging area.Inventor has found during the embodiment of the present application is realized, Its imaging surface is generally during the imaging sensor IMAQ that the usual depth of field of traditional fundus camera is shallower, fundus camera includes One plane, and eyeground shape and on-plane surface, when this causes using traditional fundus camera collection eye fundus image, eyeground only has very little Region imaging sensor can blur-free imaging, most regional imaging quality on eyeground are bad.Therefore, image described in the program Using at least local flexible imaging sensor, (such as described image sensor can use knot as shown in Figure 3 or Figure 4 to sensor Structure that the description of structure or two figures is combined etc.), the flexible characteristic of imaging surface of imaging sensor is made full use of, according to institute The curvature distribution information for stating at least eyeground of an eyes changes the distribution of shapes of at least part imaging area so that it is described at least Thus the distribution of shapes of part imaging area is fitted as close possible to the curvature distribution for being even same as at least eyeground of an eyes The IMAQ on nonplanar eyeground is answered, improves the quality of fundus imaging.For example, can be according to the song on the eyeground of the first eye Rate distributed intelligence changes the shape of at least part imaging area for the fundus imaging for being used for the first eye in described image sensor Shape is distributed, and is allowed to as close possible to or even is same as the curvature distribution on the eyeground of the first eye, be consequently adapted to described first The IMAQ on the eyeground of eyes, improve the quality of the fundus imaging of first eye.In another example can be according to second eyes The curvature distribution information on eyeground change at least part of the fundus imaging for being used for second eyes in described image sensor into As the distribution of shapes in area, the curvature distribution on the eyeground of second eyes is allowed to as close possible to or even be same as, is consequently adapted to The IMAQ on the eyeground of second eyes, improve the quality of the fundus imaging of the second eyes.According to an at least eyes Eyeground curvature distribution information change the distribution of shapes of at least part imaging area before, may also include：Described in obtaining extremely The curvature distribution information on the eyeground of few eyes, in order to carry out adaptation adjustment to the distribution of shapes of corresponding imaging area accordingly.Eye The acquisition modes of the curvature distribution information at bottom are very flexible, and the embodiment of the present application is not intended to limit to this.

Any optional implementation provided with reference to the embodiment of the present application, optionally, based on being passed including described image Before the fundus camera of sensor obtains the image on the eyeground, in addition to：Focusing adjustment is carried out to the fundus camera.The application Embodiment is not intended to limit to the implementation of specific focusing adjustment, and the focusing adjustment carried out to the fundus camera can use but not It is limited to manual focus or auto-focusing mode carries out focusing adjustment, auto-focusing can further comprises but be not limited to phase-detection pair Burnt or contrast detection focusing etc., implementation is very flexible.By carrying out gathering again after focusing adjustment to the fundus camera The image on corresponding eyeground, can further improve the quality of the fundus imaging.

Optionally, the focusing adjustment to the fundus camera can change at least part imaging area of described image sensor Normal direction before perform, that is to say, that the eyes according at least to an object axis oculi direction change image pass In sensor before the normal direction of at least part imaging area, the first focusing is carried out to the fundus camera and is adjusted.The program passes through Focusing adjustment is carried out to fundus camera before the normal direction of at least part imaging area of described image sensor is changed, can be made Imaging sensor before according to axis oculi pointing needle to the normal direction at least part imaging area for sexually revising imaging sensor In the position of preliminary focus state, advantageously reduce subsequently according to axis oculi pointing needle to sexually revising at least portion of imaging sensor The control complexity of the normal direction of point imaging area, be advantageous to increase eyeground imaging sensor can blur-free imaging region, phase When the area for the imaging region that focus state is in increase imaging sensor, and then be advantageous to improve the imaging matter of eye fundus image Amount.

Optionally, the focusing adjustment to the fundus camera can change at least part imaging area of described image sensor Normal direction after and obtain the eyeground image before perform, that is to say, that focusing tune is carried out to the fundus camera It is whole including：Change at least part imaging area in imaging sensor in the axis oculi direction of the eyes according at least to an object After normal direction and before the image on the acquisition eyeground, the second focusing is carried out to the fundus camera and is adjusted.The program exists According to axis oculi pointing needle to sexually revising the normal direction of at least part imaging area in imaging sensor and then fundus camera being entered Row focusing adjustment, is advantageous to increase the area for the imaging region that imaging sensor is in focus state, and then improves eye fundus image Image quality.It is further alternative, in actual application, if adjusted by carrying out the first focusing to fundus camera (equivalent to first focusing adjustment), make imaging sensor according to axis oculi pointing needle to sexually revising the normal of its at least part imaging area The position of preliminary focus state is in before direction, then imaging sensor according to axis oculi pointing needle to sexually revising it at least The second focusing adjustment (equivalent to secondary focusing adjustment) is carried out after the normal direction of part imaging area again, can further improve pair The speed and precision of Jiao's adjustment.

It will be understood by those skilled in the art that in any of the above-described method of the application embodiment, each step Sequence number size is not meant to the priority of execution sequence, and the execution sequence of each step should be determined with its function and internal logic, and Any restriction should not be formed to the implementation process of the application embodiment.

Fig. 5 is the logic diagram for the first eye fundus image acquisition device that the embodiment of the present application provides.As shown in figure 5, this The eye fundus image acquisition device that application embodiment provides includes：One imaging area adjusting module 51 and an eye fundus image acquisition module 52。

One imaging area adjusting module 51 is used to change imaging sensor according at least to the axis oculi direction of an eyes of an object The normal direction of middle at least part imaging area, it is imaged with improving the eyeground of an at least eyes for the object in described at least part The definition of area's imaging；

One eye fundus image acquisition module 52 is used to obtain the eyeground based on the fundus camera including described image sensor Image.

The equipment form of expression of the eye fundus image acquisition device is unrestricted, such as the eye fundus image acquisition device can For a certain independent part；Or the eye fundus image acquisition device can be integrated in one as a certain functional module has eyeground In the equipment of image collecting function, the equipment with eye fundus image acquisition function may include but be not limited to fundus camera, bag Eye tracking equipment or other electronic equipments of fundus camera etc. are included, the embodiment of the present application is not intended to limit to this.

One eyes may include that first eye, an at least eyes include first eye and/or the second eyes.It is described First eye can be the left eye of object (such as " people "), and an at least eyes include left eye or right eye or left eye and the right side Eye.Or the first eye can be the right eye of the object, an at least eyes include left eye or right eye or a left side Eye and right eye.

Optionally, as shown in fig. 6, the imaging area adjusting module 51 includes：One first imaging area adjusts submodule 511. First imaging area adjustment submodule 511 is used to be changed in described image sensor at least according to the axis oculi direction of the first eye The normal direction of part imaging area, it is clear to be imaged with to improve the eyeground of the first eye at least part imaging area Degree.The program is according to the normal of at least part imaging area in the optical axis direction adaptively changing described image sensor of first eye Direction so that the normal direction after at least part imaging area changes matches with the optical axis direction of the first eye, reduces The deviation of the two even is avoided, the convenience for obtaining eye fundus image and flexibility is which thereby enhanced, improves at least portion The quality on the eyeground of the first eye obtained on point imaging area.

Optionally, the eye fundus image acquisition device also includes：Direction of principal axis determining module 53 at a glance.Axis oculi direction determines mould Block 53 is used for the axis oculi direction for determining the first eye.The program is advantageous to obtain the axis oculi side of the first eye in real time To, and adaptation adjustment is carried out to the normal direction of at least part imaging area of imaging sensor accordingly, thus meet as eye it is dynamic with The application demands such as track.

Optionally, the axis oculi direction determining mould 53 includes：Direction of principal axis determination sub-module 531 at a glance.Axis oculi direction is true Stator modules 531 are used for axis oculi direction and an at least eyes and the image-forming range on eyeground according to second eyes, really The axis oculi direction of the fixed first eye.The program can combine the second eyes optical axis direction and an at least eyes and eyeground into Image distance is from determining the optical axis direction of the first eye.

Optionally, the first imaging area adjustment submodule 511 includes：One tilt control unit 5111.Inclination control list Member 5111 be used for tilt at least part imaging area so that tilt after at least part imaging area normal direction and institute The axis oculi direction matching of first eye is stated, thus improves what the eyeground of the first eye was imaged at least part imaging area Definition.The program is by way of at least part imaging area in tilted image sensor so that described at least part after inclination The normal direction of imaging area is matched with the axis oculi direction of first eye to be taken the photograph, and scheme is simply easily realized, improves described first The fundus imaging quality of eyes.

Optionally, the first imaging area adjustment submodule 511 includes：The first imaging area adjustment submodule includes： One sphere mobile control unit 5112.Sphere mobile control unit 5112 is used for around the ball using the first eye center as the centre of sphere At least part imaging area is moved in face, so that the axis oculi of the normal direction of at least part imaging area and the first eye Direction matches, and thus improves the definition that the eyeground of the first eye is imaged at least part imaging area.In the program At least part imaging area city with the sphere at the center of the first eye around being moved to change its normal direction, therefore, Will not change in the moving process of at least part imaging area first eye eyeground and at least part imaging area into Image distance from, thus reduce the influence of movement because of at least part imaging area to the focusing state of the fundus camera, certain Under a little situations, even if at least part imaging area around sphere movement will not also destroy the fundus camera to coke-like State, avoid the troublesome operation of repetition focusing.

Optionally, the first imaging area adjustment submodule 511 includes：One bending control unit 5113.Bending control is single Member 5113 be used for bend at least part imaging area so that at least part imaging area after bending with the First view The intersecting normal direction of part in the axis oculi direction of eyeball matches with the axis oculi direction of the first eye, thus improves described first The definition that the eyeground of eyes is imaged at least part imaging area.The program can by bend in described image sensor with The mode of the current corresponding at least part imaging area of imaging in eyeground, make at least part imaging area with the first eye The intersecting normal direction of part in axis oculi direction matched with the axis oculi direction of the first eye, thus improve the First view Image quality of the eyeground of eyeball at least part imaging area.Further, since eyeground is usually curved surface, described in program control At least part imaging area bending of imaging sensor, the conventional art being imaged relative to imaging sensor as a plane, The program also helps at least part imaging area and eyeground form fit, increase focus region, Jin Erti to a certain extent The image quality on high eyeground.

Optionally, the eye fundus image acquisition device also includes：One movement control module 54.Mobile control module 54 is used for Mobile described image sensor, so that described image sensor and the extended line of the axis oculi of the first eye have intersection point；Adopt Advantageously ensure that imaging sensor can collect the imaging light on eyeground and is imaged with the program.It is further alternative, institute The central area that intersection point is located at least part imaging area is stated, it is relatively equal to be thus advantageous at least part imaging area acquisition The eye fundus image of even distribution.

Optionally, the eye fundus image acquisition device also includes：One intersection point determining module 55 and an imaging area determining module 56.Intersection point determining module 55 is used to determine described image sensor and the intersection point of the extended line of the axis oculi of the first eye；Into As at least part imaging area of the area's determining module 56 for determining described image sensor according to the intersection point.Program base It is reference in the extended line of the axis oculi of the first eye and the intersection point of described image sensor, determines in described image sensor At least part imaging area of pending normal direction adjustment so that at least part imaging area determined can obtain eye The imaging at the bottom and imaging on the eyeground obtained can be in relatively uniform distribution.

Optionally, as shown in fig. 7, the imaging area adjusting module 51 includes：One second imaging area adjusts submodule 512. Second imaging area adjustment submodule 57 is used to change in described image sensor according at least to the axis oculi direction of the first eye The normal direction of at least part imaging area, it is imaged with to improve the eyeground of second eyes at least part imaging area clear Clear degree.The program can change in described image sensor according at least to the axis oculi direction of the first eye to be used for described second The normal direction of at least part imaging area of the fundus imaging of eyes, thus improve the eyeground of second eyes it is described at least The definition of part imaging area imaging.

Optionally, the second imaging area adjustment submodule 512 includes：One imaging area adjustment unit 5121.Adjust imaging area Whole unit 571 is used for according to the axis oculi direction of the first eye and the imaging of the relatively described fundus camera of an at least eyes Distance, change the normal direction of at least part imaging area in described image sensor, existed with improving the eyeground of second eyes The definition of at least part imaging area.There is the statistical relationships such as certain angle in the eyes of such as people's object, by First view The axis oculi direction of eyeball and image-forming range at least at a glance apart from fundus camera combine the statistical relationship (equivalent to determining indirectly The axis oculi direction of second eyes), it may be determined that imaging sensor is used at least part imaging area of the second eyes fundus imaging, Change the normal direction of at least part imaging area and with the eyeground of second eyes at least part imaging area institute Into picture quality increase for above-mentioned normal direction change control the condition of convergence, so, be based on the fundus camera Image of the eyeground in better quality formed by least part imaging area of second eyes can be obtained.

Optionally, as shown in figure 8, the eye fundus image acquisition device also includes：One distribution of shapes adjusting module 57.Shape It is distributed curvature distribution information change at least part imaging that adjusting module 57 is used at least eyeground of an eyes according to The distribution of shapes in area.Imaging sensor described in the program makes full use of figure using at least local flexible imaging sensor As the flexible characteristic of the imaging surface of sensor, according to changing the curvature distribution information at least eyeground of an eyes extremely The distribution of shapes of small part imaging area so that the distribution of shapes of at least part imaging area as close possible to even be same as institute The curvature distribution at least eyeground of an eyes is stated, is consequently adapted to the IMAQ on nonplanar eyeground, improves the matter of fundus imaging Amount.

Optionally, the eye fundus image acquisition device also includes：One eyeground curvature distribution data obtaining module 58.Eyeground is bent Rate distributed intelligence acquisition module 58 is used for the curvature distribution information for obtaining at least eyeground of an eyes.The curvature distribution on eyeground The acquisition modes of information are very flexible, and the embodiment of the present application is not intended to limit to this.

Optionally, the eye fundus image acquisition device also includes：One focusing adjusting module 59.Focusing adjusting module 59 is used for Focusing adjustment is carried out to the fundus camera.By carrying out gathering corresponding eyeground again after focusing adjustment to the fundus camera Image, it can further improve the quality of the fundus imaging.

Further alternative, the focusing adjusting module 59 includes：One first focusing adjustment submodule 591.First focusing Adjust the normal side that submodule 591 is used to change described image sensor at least part imaging area in the imaging area adjusting module Adjusted to the first focusing before, is carried out to the fundus camera.The program is by changing at least portion of described image sensor Focusing adjustment is carried out to fundus camera before the normal direction of point imaging area, imaging sensor can be made according to axis oculi pointing needle pair The position of preliminary focus state has been in before sexually revising the normal direction of at least part imaging area of imaging sensor, has been advantageous to Reduce subsequently complicated according to control of the axis oculi pointing needle to sexually revising the normal direction of at least part imaging area of imaging sensor Degree, be advantageous to increase eyeground imaging sensor can blur-free imaging region, equivalent to increase imaging sensor be in focus shape The area of the imaging region of state, and then be advantageous to improve the image quality of eye fundus image.

Further alternative, the focusing adjusting module 59 may also include：One second focusing adjustment submodule 592.Second Focusing adjustment submodule 592 is used for the method for changing described image sensor at least part imaging area in the imaging area adjusting module After line direction and before the eye fundus image acquisition module obtains the image on the eyeground, the is carried out to the fundus camera Two focusing adjustment.The program according to axis oculi pointing needle to sexually revising the normal direction of at least part imaging area in imaging sensor And then focusing adjustment is carried out to fundus camera, be advantageous to increase the face for the imaging region that imaging sensor is in focus state Product, and then improve the image quality of eye fundus image.

Fig. 9 is the structural representation for the fundus camera that the embodiment of the present application provides, and the application specific embodiment is not to eye The specific implementation of bottom camera 900 limits.As shown in figure 9, fundus camera 900 can include：

Processor (Processor) 910, communication interface (Communications Interface) 920, memory (Memory) 930, communication bus 940 and imaging sensor 950.Wherein：

Processor 910, communication interface 920 and memory 930 complete mutual communication by communication bus 940.

Communication interface 920, for being communicated with such as deformable imaging sensor etc..

Processor 910, for configuration processor 932, it can specifically perform the correlation step in any of the above-described embodiment of the method；

Imaging sensor 950 is at least local flexible imaging sensor of surface configuration, for obtaining eye fundus image.

For example, program 932 can include program code, described program code includes computer-managed instruction.

Processor 910 is probably a central processing unit (Central Processing Unit, abbreviation CPU), either Specific integrated circuit (Application Specific Integrated Circuit, abbreviation ASIC), or be arranged to Implement one or more integrated circuits of the embodiment of the present application.

Memory 930, for depositing program 932.Memory 930 may include random access memory (Random Access Memory, abbreviation RAM), it is also possible to also including nonvolatile memory (Non-volatile memory), such as extremely A few magnetic disk storage.

For example, in a kind of optional implementation, processor 910 can perform following steps by configuration processor 932：Extremely The axis oculi direction of few eyes according to an object changes the normal direction of at least part imaging area in described image sensor, with Improve the definition that the eyeground of an at least eyes for the object is imaged at least part imaging area；Passed based on described image Sensor obtains the image on the eyeground.

In other optional implementations, processor 910 can also carry out other above-mentioned any realities by configuration processor 932 The step of example refers to is applied, will not be repeated here.

In program 932 specific implementation of each step may refer to corresponding steps in above-described embodiment, module, submodule, Corresponding description, will not be repeated here in unit.It is apparent to those skilled in the art that the convenience for description With it is succinct, the equipment of foregoing description and the specific work process of module, may be referred to the corresponding process in preceding method embodiment Description, will not be repeated here.

In the application the various embodiments described above, the sequence number and/or sequencing of embodiment are merely convenient of description, do not represent reality Apply the quality of example.Description to each embodiment all emphasizes particularly on different fields, and does not have the part being described in detail in some embodiment, may refer to it The associated description of his embodiment.The associated description of implementation principle or process about device, equipment or system embodiment, reference can be made to The record of correlation method embodiment, will not be repeated here.

Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein Member and method and step, it can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually Performed with hardware or software mode, application-specific and design constraint depending on technical scheme.Professional and technical personnel Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed Scope of the present application.

If the function is realized in the form of SFU software functional unit and is used as independent production marketing or in use, can be with It is stored in a computer read/write memory medium.Based on such understanding, the technical scheme of the application is substantially in other words The part to be contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter Calculation machine software product is stored in a storage medium, including some instructions are causing a computer equipment (can be People's computer, server, or network equipment etc.) perform each embodiment methods described of the application all or part of step. And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (Read-Only Memory, abbreviation ROM), deposit at random Access to memory (Random Access Memory, abbreviation RAM), magnetic disc or CD etc. are various can be with Jie of store program codes Matter.

In the embodiments such as the device of the application, method, system, it is clear that each part (system, subsystem, module, submodule Block, unit, subelement etc.) or each step can decompose, combine and/or decompose after reconfigure.These decompose and/or again Combination nova should be regarded as the equivalents of the application.Meanwhile in the description to the application specific embodiment above, for a kind of real The feature that the mode of applying is described and/or shown can be made in a manner of same or similar in one or more other embodiments With, it is combined with the feature in other embodiment, or substitute the feature in other embodiment.

It should be emphasized that term "comprises/comprising" refers to the presence of feature, key element, step or component when being used herein, but simultaneously It is not excluded for the presence or additional of one or more further features, key element, step or component.

Finally it should be noted that：Embodiment of above is merely to illustrate the application, and is not the limitation to the application, relevant The those of ordinary skill of technical field, in the case where not departing from spirit and scope, it can also make a variety of changes And modification, therefore all equivalent technical schemes fall within the category of the application, the scope of patent protection of the application should be by right It is required that limit.

Claims

A kind of 1. eye fundus image acquisition methods, it is characterised in that including：

Change the normal direction of at least part imaging area in imaging sensor according at least to the axis oculi direction of an eyes of an object, To improve the definition that the eyeground of an at least eyes for the object is imaged at least part imaging area；

The image on the eyeground is obtained based on the fundus camera including described image sensor.
2. according to the method for claim 1, it is characterised in that

One eyes include first eye；

An at least eyes include first eye and/or the second eyes.
3. according to the method for claim 2, it is characterised in that the axis oculi direction of the eyes according at least to an object Change the normal direction of at least part imaging area in imaging sensor, to improve the eyeground of an at least eyes for the object in institute The definition of at least part imaging area imaging is stated, including：

Change the normal direction of at least part imaging area in described image sensor according to the axis oculi direction of the first eye, with Improve the definition that the eyeground of the first eye is imaged at least part imaging area.
4. according to the method for claim 3, it is characterised in that described that institute is changed according to the axis oculi direction of the first eye The normal direction of at least part imaging area in imaging sensor is stated, to improve the eyeground of the first eye in described at least part Before the definition of imaging area imaging, in addition to：

Determine the axis oculi direction of the first eye.
5. according to the method for claim 4, it is characterised in that the axis oculi direction of the first eye is determined, including：

According to the axis oculi direction of second eyes and an at least eyes and the image-forming range on eyeground, the First view is determined The axis oculi direction of eyeball.
A kind of 6. eye fundus image acquisition device, it is characterised in that including：

One imaging area adjusting module, the axis oculi direction for the eyes according at least to an object change in imaging sensor at least The normal direction of part imaging area, it is imaged with improving the eyeground of an at least eyes for the object at least part imaging area Definition；

One eye fundus image acquisition module, for obtaining the figure on the eyeground based on the fundus camera including described image sensor Picture.
7. device according to claim 6, it is characterised in that

One eyes include first eye；

An at least eyes include first eye and/or the second eyes.
8. device according to claim 7, it is characterised in that the imaging area adjusting module includes：

One first imaging area adjusts submodule, for being changed according to the axis oculi direction of the first eye in described image sensor The normal direction of at least part imaging area, it is imaged with to improve the eyeground of the first eye at least part imaging area clear Clear degree.
9. device according to claim 8, it is characterised in that also include：

Direction of principal axis determining module at a glance, for determining the axis oculi direction of the first eye.
A kind of 10. fundus camera, it is characterised in that including：

One imaging sensor, a processor, a communication interface, a memory and a communication bus；It is the processor, described logical Believe that interface, the memory and described image sensor complete mutual communication by the communication bus；

The memory is used to deposit at least one instruction；The instruction makes to operate below the computing device：

Change the normal of at least part imaging area in described image sensor according at least to the axis oculi direction of an eyes of an object Direction, to improve the definition that the eyeground of an at least eyes for the object is imaged at least part imaging area；

The image on the eyeground is obtained based on described image sensor.