CN103908219B - Image detecting system and the method obtaining image - Google Patents
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Abstract
The present invention provides a kind of image detecting system and the method obtaining image, in order to detect the image on the optical fundus of animal eyeball.Image detecting system includes image unit and the control unit being electrically connected with image unit；Image unit includes image sensor element and the camera lens being configured on image sensor element；According to the age of animal, myopia degree and hyperopia degree, at least one adjusts the focal length of camera lens or the focal length according to the prestore Focussing camera lens corresponding with animal with the crystalline lens of this species extremely amphiblestroid average distance to control unit.
Description
Technical field
The invention relates to a kind of optical system, and in particular to a kind of method of image detecting system and acquisition image.
Background technology
Eyeball is the window of human soul, and therefore the health of eyeball is particularly important.Common eyeball detecting device comprises pneumatic type tonometer, refractor and fundus camera etc., and wherein fundus camera is the image detecting system for observing optical fundus, uses the tissue on detection optical fundus with or without pathological changes, for instance detected whether detachment of retina.Additionally, due to observe optical fundus just can be immediately seen blood vessel, therefore observing the diagnosis that optical fundus can help the disease of general, especially vascular lesion (such as diabetic retinopathy) regularly follows the trail of inspection also by detection optical fundus.
Existing image detecting system need to carry out the action of auto-focusing before obtaining eye fundus image for eyeball to be measured, to obtain eye fundus image clearly.But, owing to everyone eyeball characteristic is different, therefore when operator utilizes existing image detecting system to need the action spending the substantial amounts of time to be focused in the optical fundus of person to be measured before obtaining eye fundus image, and cause the discomfort of person to be measured.
Summary of the invention
The present invention provides a kind of image detecting system and the method obtaining image.
The present invention provides a kind of image detecting system, and it can shorten tested animal and wait the time being acquired eye fundus image.
The present invention provides a kind of method obtaining image, waits that the time being acquired eye fundus image can be shortened by the method tested animal.
The present invention provides a kind of image detecting system.This image detecting system is in order to detect the image on the optical fundus of animal eyeball.Image detecting system includes image unit and the control unit being electrically connected with image unit.Image unit includes image sensor element and the camera lens being configured on image sensor element.According to the age of animal, myopia degree and hyperopia degree, at least one adjusts the focal length of camera lens or the focal length according to the prestore Focussing camera lens corresponding with animal with the crystalline lens of this species extremely amphiblestroid average distance to control unit.
The present invention provides a kind of method obtaining image.This obtains the method for image in order to obtain the image on the optical fundus of animal eyeball.The method obtaining image comprises the following steps.Thering is provided image unit, image unit includes image sensor element and is configured on image sensor element camera lens.According to the age of animal, myopia degree and hyperopia degree, at least one adjusts the focal length of camera lens or the focal length according to the prestore Focussing camera lens corresponding with animal with the crystalline lens of this species extremely amphiblestroid average distance.
In one embodiment of this invention, above-mentioned image detecting system also includes computing unit.Computing unit is electrically connected with control unit.According to the age of animal, myopia degree and hyperopia degree, at least one calculates equivalent focal length with the crystalline lens of this species to amphiblestroid average distance and calculates initial focal length according to equivalent focal length computing unit.It is initial focal length that control unit adjusts the focal length of camera lens.
In one of present invention embodiment, according to the hyperopia degree of the age of animal, myopia degree and animal, at least one obtains the diopter D of crystalline lens of animal to above-mentioned computing unit.Computing unit calculates equivalent focal length u according to a formula.This formula is: D=[(1/u)+(1/v)], and wherein v is the crystalline lens meansigma methods to retina distance of this species.
In one of present invention embodiment, above-mentioned image detecting system also includes interface unit.Interface unit is electrically connected with control unit.Interface unit be suitable to be transfused to the age of animal, myopia degree and hyperopia degree at least one.
In one embodiment of this invention, above-mentioned image detecting system, also include interface unit.Interface unit is electrically connected with control unit.Interface unit is suitable to be transfused to the case number corresponding with animal or status identification code, and control unit obtains, according to case number or status identification code, the focal length that prestores.
In one embodiment of this invention, above-mentioned interface unit is bar code read element.
In one embodiment of this invention, above-mentioned image unit is suitable to obtain the biological characteristic of animal, and control unit obtains, according to biological characteristic, the focal length that prestores.
In one embodiment of this invention, above-mentioned biological characteristic is the face image of animal, and wherein this image unit obtains this biological characteristic of this animal when lying in previewing image.
In one embodiment of this invention, above-mentioned include according at least one step adjusting this lens focus with the crystalline lens of this species to amphiblestroid average distance of the age of animal, myopia degree and hyperopia degree: according to the age of animal, myopia degree and hyperopia degree, at least one calculates equivalent focal length with the crystalline lens of this species to amphiblestroid average distance；And calculate initial focal length according to equivalent focal length, and the focal length adjusting camera lens is initial focal length.
In one embodiment of this invention, above-mentioned include according at least one step calculating equivalent focal length with the crystalline lens of this species to amphiblestroid average distance of the age of animal, myopia degree and hyperopia degree: according to the age of animal, myopia degree and hyperopia degree, at least one obtains the diopter D of crystalline lens of animal；And calculating equivalent focal length u according to a formula, this formula is: D=[(1/u)+(1/v)], and wherein v is the crystalline lens meansigma methods to amphiblestroid distance of this species.
Based on above-mentioned, the image detecting system of one embodiment of the invention and obtain the method for image according to the age of tested animal, myopia degree and hyperopia degree at least one with the crystalline lens of this species to amphiblestroid average distance, or according to the prestore focal length corresponding with tested animal, the best focusing of the focusing closing to reality of image unit can be made in advance, and then shorten the time that image unit is required to focusing at the bottom of animal eye to be measured.So, the time that tested animal waits just can be shortened.
For the features described above of the present invention and advantage can be become apparent, special embodiment below, and accompanying drawing shown in coordinating is described in detail below.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the image detecting system of one embodiment of the invention；
Fig. 2 is the dioptric graph of a relation of animal age and the crystalline lens of animal；
Fig. 3 illustrates the flow chart of the image detecting system start of one embodiment of the invention；
Fig. 4 is the flow chart of the acquisition image method of one embodiment of the invention；
Fig. 5 is the concrete grammar flow chart of the step S200 implementing Fig. 4；
Fig. 6 is the concrete grammar flow chart of the step S210 implementing Fig. 5.
Description of reference numerals:
100: image detecting system；
110: image unit；
112: image sensor element；
114: camera lens；
120: control unit；
130: computing unit；
140: memory element；
150: interface unit；
200: animal eyeball；
220: crystalline lens；
210: retina；
U: equivalent focal length；
V: the crystalline lens of animal is amphiblestroid average distance extremely；
S: curve；
S100, S200, S210, S220, S212, S214: step.
Detailed description of the invention
Image detecting system
Fig. 1 is the schematic diagram of the image detecting system of one embodiment of the invention.Refer to Fig. 1, image detecting system 100 is in order to detect the image of the eyeball of animal.In the present embodiment, image detecting system 100 is the image of the eyeball detecting the mankind, but the invention is not restricted to this, in other embodiments, image detecting system device 100 also may be used to detect the eyeball image of other species (such as Canis familiaris L., cat, cattle, sheep, horse, pig etc.).It addition, the image detecting system 100 of the present embodiment is particularly in order to detect the image on the optical fundus of eyeball, for instance the image of retina (retina).
The image detecting system 100 of the present embodiment includes image unit 110 and control unit 120.Image unit 110 includes image sensor element 112 and the camera lens 114 being configured on image sensor element 112.The element that image sensor element 112 produces the signal of telecommunication or chemical reaction for being suitable to receive optical imagery.For example, image sensor element 112 can couple (chargecoupleddevice for light-induced charge, be called for short CCD) element, CMOS (complementarymetal-oxidesemiconductor, be called for short CMOS) element or tradition egative film.In the present embodiment, camera lens 114 can be zoom lens.Image detecting system 100 is visually intended to the focal length of the pre-adjusted camera lens 114 of characteristic of the animal eyeball 200 of detection, and reduces the time that tested animal waits.
Control unit 120 and the image unit 110 of the present embodiment are electrically connected.Control unit 120 also includes an actuator and camera lens 114 can be driven to change focal length, this actuator can be a stepper motor, voice coil motor, piezo-activator or other can order about camera lens 114 and move to change the equipment of focal length.Control unit 120 be the hyperopia degree according to the age of tested animal, the myopia degree of tested animal and tested animal at least one (refer to that the summation of crystalline lens 220 to retina 210 distance of this species eyeball 200 N number of is divided by the meansigma methods of N gained, wherein N is effective sample number statistically) with the average distance v of crystalline lens 220 to the retina 210 of this species eyeball 200 and adjust the focal length of camera lens 114.In brief, the control unit 120 of the present embodiment can according to the focal length of the pre-adjusted camera lens 114 of the characteristic of tested animal eyeball 200 before image detecting system 100 carries out auto-focusing action, and make the focusing of image unit 110 close to actual best focusing, and then reduce image unit 110 and focus the required time.Consequently, it is possible to examined animal (i.e. sufferer) waits that the time being acquired eye fundus image just can shorten.
Furthermore, the image detecting system 100 of the present embodiment also includes and the computing unit 130 of control unit 120 electric connection.Computing unit 130 first can calculate equivalent focal length u according at least one average distance v with crystalline lens 220 to the retina 210 of this species eyeball 200 of the age of tested animal, the myopia degree of tested animal and tested animal hyperopia degree.Then, computing unit 130 can calculate initial focal length further according to this equivalent focal length u.Then, it is this initial focal length that control unit 120 adjusts the focal length of camera lens 114 again, and makes the focusing best focusing close to reality of image unit 110.
Specifically, the computing unit 130 of the present embodiment at least one can obtain diopter (diopter) D of crystalline lens (lens) 220 of animal eyeball 200 according to the age of tested animal, myopia degree and hyperopia degree.Fig. 2 is the dioptric graph of a relation of animal age and the crystalline lens of animal.In fig. 2, animal age is for the crystalline lens of human age Yu the mankind with the crystalline lens of animal.The dioptric synopsis of near, the hyperopia degree of table 1 and table 2 respectively animal and the crystalline lens of animal.Refer to Fig. 2, computing unit 130 can find out the diopter of tested animal eyeball 200 crystalline lens corresponding with the tested animal age according to the curve S of Fig. 2.
[table 1]
| Myopia degree | Diopter |
| 50 | -0.5 |
| 100 | -1 |
| 200 | -2 |
| 300 | -3 |
| 400 | -4 |
| 500 | -5 |
| 600 | -6 |
| 700 | -7 |
| 800 | -8 |
| 900 | -9 |
| 1000 | -10 |
[table 2]
| Hyperopia degree | Diopter |
| 50 | 0.5 |
| 100 | 1 |
| 200 | 2 |
| 300 | 3 |
| 400 | 4 |
| 500 | 5 |
| 600 | 6 |
| 700 | 7 |
| 800 | 8 |
| 900 | 9 |
| 1000 | 10 |
Refer to table 1 and table 2, or, computing unit 130 can find out the myopia with tested animal or the diopter D of tested animal eyeball 200 crystalline lens 220 corresponding to hyperopia degree according to table 1 or table 2.
In the present embodiment, after computing unit 130 learns the diopter D of tested animal eyeball 200 crystalline lens 220, computing unit 130 can calculate equivalent focal length u according to following formula (1).Formula (1) is: D=[(1/u)+(1/v)], and wherein v is the meansigma methods of crystalline lens 220 to retina 210 distance of this kind tested animal.Then, computing unit 130 can calculate initial focal length further according to equivalent focal length u.Then, it is this initial focal length that control unit 120 adjusts the focal length of camera lens 114, and makes the focusing best focusing close to reality of image unit 110, and then minimizing image unit 110 is focused the required time.
Fig. 2 is for the distinctive numerical curve of the mankind, is then still applied to the calculating formula of above-mentioned D=[(1/u)+(1/v)] as other animals.
But, the method that control unit 120 adjusts camera lens 114 focal length and makes the close best focusing of focusing of image unit 110, however it is not limited to the above.In other embodiments, control unit 120 is also dependent on the focal length of the prestore Focussing camera lens 114 corresponding with tested animal.Specifically, as it is shown in figure 1, image detecting system 100 can farther include the memory element 140 being connected with control unit 120.Memory element 140 can store camera lens 114 focal length when image detecting system 100 successfully measured this tested animal eyeball 200 (such as retina 210 position) last time, and camera lens 114 focal length that control unit 120 is when can be successfully measured this tested animal eyeball 200 last time by the Focussing of camera lens 114 when this measures, and then shorten image unit 110 and focus the required time.
Referring again to Fig. 1, the image detecting system 100 of the present embodiment also includes the interface unit 150 being electrically connected with control unit 120.Interface unit 150 be suitable to be transfused to the age of tested animal, myopia degree and hyperopia degree at least one.For example, the interface unit 150 of the present embodiment can be keyboard, contact panel, mike etc..But, the invention is not restricted to this, in other embodiments, interface unit 150 may also suitably be and is transfused to the case number corresponding with tested animal or identity identification code.Control unit 120 can obtain the above-mentioned focal length that prestores according to case number or status identification code, and camera lens 114 focal length when being successfully measured this tested animal eyeball 200 last time by the Focussing of camera lens 114, and then reduce the time that tested animal waits.In this embodiment, interface unit 150 is such as bar code read element, but is not limited.
In addition, the image unit 110 of the present embodiment also can when previewing image the biological characteristic (face image of such as tested animal) of therefrom identification tested animal, and then in memory element 140, read camera lens 114 focal length being consistent when successfully measuring this tested animal eyeball 200 (such as retina 210 position) corresponding last time with the biological characteristic of this tested animal, control unit 120 can previous tested animal eyeball 200 (such as retina 210 position) corresponding to this biological characteristic time camera lens 114 focal length, camera lens 114 focal length when being successfully measured this tested animal eyeball 200 last time by the Focussing of camera lens 114.By the mode of above-mentioned bar code read element or face recognition, image detecting system 100 can reduce image unit 110 further and focus the required time, and then reduces the time that tested animal wait is measured.
Fig. 3 illustrates the flow chart of the image detecting system start of one embodiment of the invention.Refer to Fig. 1 and Fig. 3, first, operator first passes through interface unit 150 and inputs the case number of tested animal, identity identification code or biological characteristic.Then, control unit 120 judges whether to have in memory element 140 past data that the case number with tested animal 200, identity identification code or biological characteristic are corresponding.If there being the past data that the case number with tested animal, identity identification code or biological characteristic are corresponding in memory element 140, then control unit 120 judges the focal length that whether there is the camera lens 114 when focusing successfully last time in memory element 140.If the focal length of the camera lens 114 when having focused successfully last time in memory element 140 (prestore focal length), the then focal length of the camera lens 114 when the Focussing of camera lens 114 is focused successfully by control unit 120 last time.Being intended to set the action of focusing by above-mentioned, image detecting system 100 just can quickly complete the process of auto-focusing, and then shortens the time that tested animal waits.
Referring again to Fig. 1 and Fig. 3, on the other hand, if control unit 120 judges without the past data corresponding with tested animal case number, identity identification code or biological characteristic in memory element 140, then operator can pass through interface unit 150 input the age of tested animal, myopia degree, hyperopia degree at least one.If operator has the age of input tested animal without myopia degree or the hyperopia degree of input tested animal, then control unit 120 can be initial focal length according to the focal length of the age adjustment camera lens 114 of tested animal.If operator has myopia degree or the hyperopia degree of input tested animal, then control unit 120 can be initial focal length according to the focal length of the whole camera lens 114 of the myopia degree of tested animal or hyperopia degree.By said method, image detecting system also can complete to be intended to set the action of focusing, and then shortens the time that tested animal waits.
The method obtaining image
Fig. 4 is the flow chart of the acquisition image method of one embodiment of the invention.Refer to Fig. 4,
Step S100, offer image unit, image unit includes image sensor element and the camera lens being configured on image sensor element.
Step S200, adjust the focal length of camera lens or the focal length according to the prestore Focussing camera lens corresponding with tested animal to amphiblestroid average distance according to the crystalline lens of the hyperopia degree of the age of tested animal, the myopia degree of tested animal and tested animal one and this species at least within.
Fig. 5 is the concrete grammar flow chart of the step S200 implementing Fig. 4.Refer to Fig. 5, specifically, in the present embodiment, comprise the following steps according at least one method adjusting lens focus with the crystalline lens of this kind tested animal to amphiblestroid average distance of the hyperopia degree of the age of tested animal, the myopia degree of tested animal and tested animal.
Step S210, according to the hyperopia degree of the age of tested animal, the myopia degree of tested animal and tested animal, at least one calculates equivalent focal length with the crystalline lens of this kind tested animal to amphiblestroid average distance.
Step S220, calculating initial focal length according to this equivalence focometer, and the focal length adjusting camera lens is this initial focal length.
Fig. 6 is the concrete grammar flow chart of the step S210 implementing Fig. 5.Refer to Fig. 5, specifically, in the present embodiment, comprise the following steps according at least one method calculating described equivalent focal length with the crystalline lens of this kind tested animal to amphiblestroid average distance of the hyperopia degree of the age of tested animal, the myopia degree of tested animal and tested animal.
Step S212, according to the hyperopia degree of the age of tested animal, the myopia degree of tested animal and tested animal, at least one obtains the diopter D of crystalline lens of tested animal.In detail, Fig. 2, table 1 or table 2 can be passed through and obtain the diopter D of crystalline lens corresponding to the hyperopia degree of the age with tested animal, the myopia degree of tested animal or tested animal.
Step S214, calculate equivalent focal length u according to formula (1).Formula (1) is: D=[(1/u)+(1/v)], and wherein v is the crystalline lens meansigma methods to retina distance of this kind tested animal.By said method, can in order to, before obtaining tested animal eye fundus image, first to complete to be intended to set the action of focusing, and then to reduce image unit to obtaining the time needed for focusing at the bottom of animal eye to be measured.Consequently, it is possible to the time that tested animal waits just can be shortened.
In sum, in the image detecting system of one embodiment of the invention and the method for acquisition image, can according to the age of tested animal, myopia degree and hyperopia degree at least one with the crystalline lens of this species to amphiblestroid average distance, or according to the prestore focal length corresponding with tested animal, make the best focusing of the focusing closing to reality of image unit in advance, and then shorten the time that image unit is required to focusing at the bottom of animal eye to be measured.So, the time that tested animal waits just can be shortened.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；Although the present invention being described in detail with reference to foregoing embodiments, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein some or all of technical characteristic is carried out equivalent replacement；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (11)
1. an image detecting system, in order to detect the image on an optical fundus of an animal eyeball, this image detecting system includes an image unit, and this image unit includes an image sensor element and the camera lens being arranged on this image sensor element, it is characterized in that, this image detecting system also includes:
One control unit, it is electrically connected with this image unit, according to the hyperopia degree of the age of animal, the myopia degree of this animal and this animal, at least one adjusts the focal length of this camera lens or the focal length of this camera lens of Focussing that prestores according to corresponding with this animal with the crystalline lens of this species eyeball to amphiblestroid average distance to this control unit.
2. image detecting system according to claim 1, it is characterized in that, also include: a computing unit, it is electrically connected with this control unit, according to the hyperopia degree of the age of this animal, the myopia degree of this animal and this animal, at least one calculates an equivalent focal length with the crystalline lens of this species eyeball to amphiblestroid average distance and calculates an initial focal length according to this equivalence focometer this computing unit, and the focal length that this control unit adjusts this camera lens is this initial focal length.
3. image detecting system according to claim 2, it is characterized in that, according to the hyperopia degree of the age of this animal, the myopia degree of this animal and this animal, at least one obtains the diopter D of crystalline lens of this animal to this computing unit, this computing unit calculates this equivalent focal length u according to a formula, this formula is: D=[(1/u)+(1/v)], and wherein v is the crystalline lens meansigma methods to retina distance of this species eyeball.
4. image detecting system according to claim 1, it is characterized in that, also include: an interface unit, be electrically connected with this control unit, this interface unit be suitable to be transfused to the age of this animal, the myopia degree of this animal and this animal hyperopia degree at least one.
5. image detecting system according to claim 1, it is characterized in that, also include: an interface unit, it is electrically connected with this control unit, this interface unit is suitable to be transfused to a case number corresponding with this animal or identity identification code, and this control unit obtains this focal length that prestores according to this case number or this identity identification code.
6. image detecting system according to claim 5, it is characterised in that this interface unit is a bar code read element.
7. image detecting system according to claim 1, it is characterised in that this image unit is suitable to obtain a biological characteristic of this animal, and this control unit obtains this focal length that prestores according to this biological characteristic.
8. image detecting system according to claim 7, it is characterised in that this biological characteristic is the face image of this animal, and this image unit is this biological characteristic obtaining this animal when previewing image.
9. the method obtaining image, in order to obtain the image on an optical fundus of an animal eyeball, the method of this acquisition image includes: provide an image unit, this image unit includes an image sensor element and the camera lens being arranged on this image sensor element, it is characterized in that, the method for this acquisition image also includes:
Hyperopia degree according to the age of this animal, the myopia degree of this animal and this animal at least one adjust the focal length of this camera lens or the focal length of this camera lens of Focussing that prestores according to corresponding with this animal with the crystalline lens of this species eyeball to amphiblestroid average distance.
10. the method for acquisition image according to claim 9, it is characterized in that, include according at least one step adjusting this lens focus with the crystalline lens of this species eyeball to amphiblestroid average distance of the hyperopia degree of the age of this animal, the myopia degree of this animal and this animal:
Hyperopia degree according to the age of this animal, the myopia degree of this animal and this animal at least one calculate an equivalent focal length with the crystalline lens of this species eyeball to amphiblestroid average distance；And
Calculate an initial focal length according to this equivalence focometer, and the focal length adjusting this camera lens is this initial focal length.
11. the method for acquisition image according to claim 10, it is characterized in that, include according at least one step calculating this equivalent focal length with the crystalline lens of this species eyeball to amphiblestroid average distance of the hyperopia degree of the age of this animal, the myopia degree of this animal and this animal:
Hyperopia degree according to the age of this animal, the myopia degree of this animal and this animal at least one obtain the diopter D of crystalline lens of this animal；And
Calculating this equivalent focal length u according to a formula, this formula is: D=[(1/u)+(1/v)], and wherein v is the crystalline lens meansigma methods to amphiblestroid distance of this species eyeball.
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| CN108605120A (en) * | 2016-01-29 | 2018-09-28 | 惠普发展公司，有限责任合伙企业 | Viewing equipment adjustment based on the eye adjusting about display |
| CN108830138B (en) * | 2018-04-26 | 2021-05-07 | 平安科技（深圳）有限公司 | Livestock identification method, device and storage medium |
| CN109286752A (en) * | 2018-09-28 | 2019-01-29 | 东莞华贝电子科技有限公司 | Visual detection device and automatic focusing method |
| CN111768659B (en) * | 2020-05-15 | 2022-08-30 | 四川科华天府科技有限公司 | Zoom system based on AR interactive teaching equipment |
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| CN101086598A (en) * | 2006-06-09 | 2007-12-12 | 索尼株式会社 | Imaging apparatus, control method of imaging apparatus, and computer program |
| EP2638849A1 (en) * | 2012-03-13 | 2013-09-18 | Nidek Co., Ltd. | Fundus photographing apparatus |
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| CN103908219A (en) | 2014-07-09 |
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