CN105578049A - Camera control method and terminal - Google Patents
Camera control method and terminal Download PDFInfo
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- CN105578049A CN105578049A CN201510988667.1A CN201510988667A CN105578049A CN 105578049 A CN105578049 A CN 105578049A CN 201510988667 A CN201510988667 A CN 201510988667A CN 105578049 A CN105578049 A CN 105578049A
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000001133 acceleration Effects 0.000 description 23
- 238000011084 recovery Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000011022 operating instruction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/65—Control of camera operation in relation to power supply
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Abstract
Embodiments of the invention provide a camera control method and a terminal. The camera control method comprises the following steps: judging whether a shooting operation of a user on a camera is detected within a preset period of time; and when the shooting operation of the user on the camera is not detected within the preset period of time, reducing the image preview load of the camera. The camera control method provided by the embodiments of the invention can be used for reducing the power consumption of the camera.
Description
Technical field
The present invention relates to field of terminal technology, particularly relate to a kind of method and the terminal that control camera.
Background technology
The terminal such as mobile phone or camera is usually with camera, and the process that terminal is undertaken taking pictures by camera can comprise: start camera applications, to trigger the event of taking pictures; Preview image is exported in image preview interface; Receive the photographing instruction that user submits to preview image, response photographing instruction is taken pictures.In daily life, after terminal opens camera head, scene constantly switches, and image preview interface constantly can adjust according to scene, constantly exports preview image, and terminal will consume more electric current in the process exporting preview image, and camera power consumption is higher.
Summary of the invention
The embodiment of the present invention provides a kind of method and the terminal that control camera, can reduce camera power consumption.
Embodiments provide a kind of method controlling camera, comprising:
Judge in preset time period, the shooting operation of user to camera whether detected;
When the shooting operation of user to described camera not detected in described preset time period, reduce the image preview load of described camera.
Correspondingly, the embodiment of the present invention additionally provides a kind of terminal, comprising:
Whether judging unit, detect the shooting operation of user to camera for judging in preset time period;
Load reduces unit, for when the shooting operation of user to described camera not detected in described preset time period, reduces the image preview load of described camera.
The embodiment of the present invention is by judging the shooting operation of user to camera whether detected in preset time period, and when the shooting operation of user to camera not detected in preset time period, the image preview load of reduction camera, can reduce camera power consumption.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic flow sheet controlling the method for camera provided in the embodiment of the present invention;
Fig. 2 is a kind of schematic flow sheet controlling the method for camera provided in another embodiment of the present invention;
Fig. 3 is the structural representation of a kind of terminal provided in the embodiment of the present invention;
Fig. 4 is the structural representation of the load reduction unit of Fig. 3 in the embodiment of the present invention;
Fig. 5 is the structural representation of a kind of terminal provided in another embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The method of the control camera that the embodiment of the present invention provides may operate in the terminals such as smart mobile phone (as Android phone, iOS mobile phone etc.), panel computer or electronic reader.
Fig. 1 is a kind of schematic flow sheet controlling the method for camera provided in the embodiment of the present invention, and as shown in the figure, the method for the control camera in the embodiment of the present invention at least can comprise:
S101, judges in preset time period, the shooting operation of user to camera whether detected.
Terminal can judge in preset time period, the shooting operation of user to camera whether detected, when the shooting operation of user to camera not detected in preset time period, reduces the image preview load of camera; When the shooting operation of user to camera being detected in preset time period, terminal can generate preview image and recover instruction, to recover parameters, and exports preview image by the parameter after each recovers.Wherein, parameter can comprise analog voltage (AVDD) in image processing circuit or digital voltage (DVDD), the Output Size of preview image or frame per second, to the image procossing etc. that preview image carries out, image procossing can comprise noise compensation or Images uniting etc.
Wherein, user can be the tripper etc. that user clicks that the virtual key with shoot function or user press camera to the shooting operation of camera.Such as, when terminal has started camera and terminal is placed on inside pocket, user cannot have been taken by camera, in preset time period, the shooting operation of user to camera now do not detected; When terminal starts camera, user's handheld terminal and user's amplitude of fluctuation are comparatively large, then show that user can not be taken by camera at short notice, the shooting operation of user to camera do not detected in preset time period; When terminal lies on the object such as desktop or sofa, the camera started is towards desktop or sofa, and user cannot be taken by camera, the shooting operation of user to camera do not detected in preset time period.And for example, when terminal starts camera, terminal is not placed on inside pocket, and user's amplitude of fluctuation is little, and terminal does not lie on the object such as desktop or sofa, then show in preset time period, the shooting operation of user to camera detected.
In an alternative embodiment, terminal can obtain distance between camera and subject by range sensor, and when distance is less than predeterminable range threshold value, terminal can be determined in preset time period, the shooting operation of user to camera do not detected.It should be noted that, predeterminable range threshold value is the distance threshold preset, such as 1cm or 2cm etc.In specific implementation, terminal can arrange range sensor in the position of camera or the position adjacent with camera (such as photoflash lamp present position), when determining that camera starts, by the pulse of range sensor utilizing emitted light on subject, determine the launch time of this light pulse emission to subject, and obtain the time of reception of this light pulse reflected from subject, the distance between camera and subject is obtained according to launch time and time of reception, when distance is less than predeterminable range threshold value, terminal can determine the close together between subject, now terminal may be placed on inside pocket, and then determine in preset time period, the shooting operation of user to camera do not detected.
In an alternative embodiment, terminal can obtain the acceleration of terminal by acceleration transducer, when acceleration is greater than predetermined acceleration threshold value, determine that camera does not enter screening-mode.It should be noted that, predetermined acceleration threshold value is the acceleration rate threshold preset, such as 10m/s
2or 15m/s
2deng.In specific implementation, terminal can built-in acceleration transducer, when determining that camera starts, the acceleration of terminal is obtained by acceleration transducer, when acceleration is greater than predetermined acceleration threshold value, can determine that terminal is rocked comparatively violent, now user's amplitude of fluctuation of carried terminal is comparatively large, and then determines in preset time period, the shooting operation of user to camera do not detected.
In an alternative embodiment, terminal can obtain the preview image in image preview interface, when the color of preview image is black, determines in preset time period, the shooting operation of user to camera do not detected.In specific implementation, when distance between camera and subject is zero, terminal by camera collection to preview image be black, user cannot check subject in image preview interface, when then terminal determination camera starts, the preview image in image preview interface can be obtained, when the color of preview image is black, when now terminal may lie on the object such as desktop or sofa, and the camera started is towards desktop or sofa, and then terminal can be determined the shooting operation of user to camera not detected in preset time period.
In an alternative embodiment, terminal can detect whether start camera, when starting camera, judges in preset time period, the shooting operation of user to camera whether detected further.Wherein, terminal can comprise at least one camera.When terminal comprises front-facing camera and post-positioned pick-up head, terminal can detect whether start front-facing camera, when starting front-facing camera, judges in preset time period, the shooting operation of user to front-facing camera whether detected further; Terminal also can detect whether start post-positioned pick-up head, when starting post-positioned pick-up head, judges in preset time period, the shooting operation of user to post-positioned pick-up head whether detected further.
In specific implementation, whether terminal detection camera application can be in running status, and when camera applications is in running status, terminal can be determined to have started camera.Such as, user inputs camera applications operating instruction by the mode of the application icon clicking camera applications, and terminal response camera applications operating instruction runs camera applications, when camera applications is in running status, determines to start camera.And for example, terminal can be whether cycle detection camera applications is in running status with preset duration, when camera applications is current be in running status time, determine to start camera.
Further, when terminal comprises front-facing camera and post-positioned pick-up head, and when camera applications is in running status, terminal can judge whether front-facing camera or post-positioned pick-up head start.Exemplary, when terminal response camera applications operating instruction runs camera applications, terminal can be given tacit consent to and opens post-positioned pick-up head, now terminal is determined to start post-positioned pick-up head, if when user wishes to use front-facing camera to autodyne, can input camera switching command to terminal, terminal response camera switching command is opened front-facing camera and closes post-positioned pick-up head, and terminal can be determined to have started front-facing camera.
S102, reduces the image preview load of camera.
When the shooting operation of user to camera not detected in preset time period, terminal can reduce the image preview load of camera.
In an alternative embodiment, analog voltage in image processing circuit can be adjusted to predetermined analog voltage by terminal, or the digital voltage in image processing circuit is adjusted to preset number voltage, predetermined analog voltage wherein in image processing circuit is less than analog voltage, and preset number voltage is less than digital voltage.In specific implementation, predetermined analog voltage can intend voltage for minimum modulus, preset number voltage can be lowest numeric voltage, terminal is by camera collection preview image, and in image preview interface, show the operating voltage used in the process of preview image be usually greater than minimum voltage, when then terminal does not detect the shooting operation of user to camera in preset time period, analog voltage in image processing circuit can be reduced to minimum analog voltage, digital voltage in image processing circuit can also be reduced to lowest numeric voltage, can realize reducing camera power consumption.
In an alternative embodiment, terminal can obtain the preview image that camera collection arrives, and adjusts preview image, to reduce Output Size or the frame per second of preview image, and the preview image after the adjustment of image preview interface display.Such as, the Output Size of image is in units of pixel, reduce the Output Size of image, the pixel count of the image shown in image preview interface can be reduced, realize reducing camera power consumption, then when terminal detects that camera does not enter screening-mode, the preview image that camera collection arrives can be obtained, preview image is adjusted, to reduce the Output Size of preview image, the preview image after the adjustment of image preview interface display.And for example, frame per second (Framerate) is that measurement unit is display frame number per second for measuring display the measuring of frame number, during frame number presentation video processor process preview image per second each second the number of times that can upgrade.When then terminal detects that camera does not enter screening-mode, the frame per second of preview image can be reduced, the preview image after the adjustment of image preview interface display.And for example, when terminal detects that camera does not enter screening-mode, Output Size and the frame per second of preview image can be reduced simultaneously, and the preview image after the adjustment of image preview interface display.
In an alternative embodiment, terminal can be suspended and carry out image procossing to preview image.In specific implementation, terminal, by after camera collection preview image, can be suspended and carry out noise compensation or Images uniting etc. to preview image, directly exports the preview image without image procossing, realizes reducing camera power consumption.
In an alternative embodiment, terminal can be suspended by camera collection preview image, realizes reducing camera power consumption.
In the method for the control camera shown in Fig. 1, judge in preset time period, the shooting operation of user to camera whether detected, when the shooting operation of user to camera not detected in preset time period, reducing the image preview load of camera, camera power consumption can be reduced.
Fig. 2 is a kind of schematic flow sheet controlling the method for camera provided in another embodiment of the present invention, and as shown in the figure, the method for the control camera in the embodiment of the present invention at least can comprise:
S201, determines the camera starting terminal.
Terminal can detect whether start camera, when starting camera, judges in preset time period, the shooting operation of user to camera whether detected further.
S202, judges in preset time period, the shooting operation of user to camera whether detected.
Terminal can judge in preset time period, the shooting operation of user to camera whether detected, when the shooting operation of user to camera not detected in preset time period, reduces the image preview load of camera; When the shooting operation of user to camera being detected in preset time period, terminal can generate preview image and recover instruction.
In specific implementation, terminal can obtain distance between camera and subject by range sensor, and when distance is less than predeterminable range threshold value, terminal can be determined in preset time period, the shooting operation of user to camera do not detected.Further, when distance is greater than or equal to predeterminable range threshold value, terminal can obtain the preview image in image preview interface, when the color of preview image is black, determines in preset time period, the shooting operation of user to camera do not detected.Further, when the color of preview image is not black, terminal can obtain the acceleration of terminal by acceleration transducer, when acceleration is greater than predetermined acceleration threshold value, determine in preset time period, the shooting operation of user to camera do not detected, when acceleration is less than or equal to predetermined acceleration threshold value, can determine in preset time period, the shooting operation of user to camera detected, and then generate preview image recovery instruction.
S203, reduces the image preview load of camera.
When the shooting operation of user to camera not detected in preset time period, terminal can reduce the image preview load of camera.
S204, when the shooting operation of user to camera being detected in preset time period, generating preview image and recovering instruction, and performs preview image and recover instruction.
After terminal reduces the image preview load of camera, if when the shooting operation of user to camera being detected in preset time period, generate preview image and recover instruction, and perform preview image and recover instruction.
In specific implementation, terminal can obtain distance between camera and subject by range sensor, when distance is greater than or equal to predeterminable range threshold value, terminal can obtain the preview image in image preview interface, when the color of preview image is not black, terminal can obtain the acceleration of terminal by acceleration transducer, when acceleration is less than or equal to predetermined acceleration threshold value, determine in preset time period, the shooting operation of user to camera detected, and then generate preview image recovery instruction, instruction is recovered according to preview image, recover parameters, and export preview image by the parameter after each recovers.Such as, terminal can recover instruction according to preview image, the analog voltage in Recovery image treatment circuit or digital voltage, recover by camera collection preview image, recover the image procossing of preview image, or recover Output Size or the frame per second of preview image, etc.
In the method for the control camera shown in Fig. 2, determine the camera starting terminal, judge in preset time period, the shooting operation of user to camera whether detected, when the shooting operation of user to camera not detected in preset time period, reduce the image preview load of camera, when the shooting operation of user to camera being detected in preset time period, generating preview image and recovering instruction, and perform preview image recovery instruction, camera power consumption can be reduced.
Fig. 3 is the structural representation of a kind of terminal provided in the embodiment of the present invention, and the terminal as shown in the figure in the embodiment of the present invention at least can comprise: judging unit 301 and load reduce unit 302, wherein:
Whether judging unit 301, detect the shooting operation of user to camera for judging in preset time period.Wherein, user can be the tripper etc. that user clicks that the virtual key with shoot function or user press camera to the shooting operation of camera.Such as, when terminal has started camera and terminal is placed on inside pocket, user cannot have been taken by camera, and now judging unit 301 does not detect the shooting operation of user to camera in preset time period; When terminal starts camera, user's handheld terminal and user's amplitude of fluctuation are comparatively large, then show that user can not be taken by camera at short notice, now judging unit 301 does not detect the shooting operation of user to camera in preset time period; When terminal lies on the object such as desktop or sofa, the camera started is towards desktop or sofa, and user cannot be taken by camera, and now judging unit 301 does not detect the shooting operation of user to camera in preset time period.And for example, when terminal starts camera, terminal is not placed on inside pocket, and user's amplitude of fluctuation is little, and terminal does not lie on the object such as desktop or sofa, then judging unit 301 does not detect the shooting operation of user to camera in preset time period.
Load reduces unit 302, for when the shooting operation of user to camera not detected in preset time period, and reduction image preview load.
In an alternative embodiment, load reduces unit 302, and for the analog voltage in image processing circuit is adjusted to predetermined analog voltage, predetermined analog voltage is less than analog voltage.Or
Load reduces unit 302, and for the digital voltage in image processing circuit is adjusted to preset number voltage, preset number voltage is less than digital voltage.
In specific implementation, predetermined analog voltage can intend voltage for minimum modulus, preset number voltage can be lowest numeric voltage, terminal is by camera collection preview image, and in image preview interface, show the operating voltage used in the process of preview image be usually greater than minimum voltage, when then judging unit 301 does not detect the shooting operation of user to camera in preset time period, load reduces unit 302 can be reduced to minimum analog voltage by the analog voltage in image processing circuit, digital voltage in image processing circuit can also be reduced to lowest numeric voltage, can realize reducing camera power consumption.
In an alternative embodiment, load reduction unit 302 can as shown in Figure 4, comprise further:
Preview image acquiring unit 401, for obtaining the preview image that camera collection arrives.
Preview image adjustment unit 402, for adjusting preview image, to reduce Output Size or the frame per second of preview image.
Preview image display unit 403, for the preview image after the adjustment of image preview interface display.
In an alternative embodiment, load reduces unit 302, carries out image procossing specifically for suspending to preview image, and image procossing comprises noise and compensates or Images uniting.
In an alternative embodiment, load reduces unit 302, specifically for suspending by camera collection preview image.
In the terminal shown in Fig. 3, when judging unit 301 does not detect the shooting operation of user to camera in preset time period, load reduces unit 302 and reduces image preview load, can reduce the power consumption of camera.
Fig. 5 is the structural representation of a kind of terminal provided in second embodiment of the invention, and as shown in the figure, described terminal at least can comprise: input unit 503, output device 504, processor 501, such as CPU, memory 505 and at least one bus 502.
Wherein, above-mentioned bus 502 is for connecting above-mentioned input unit 503, output device 504, processor 501 and memory 505.
Wherein, above-mentioned input unit 503 specifically can be range sensor, for obtaining the distance between camera and subject.Optionally, input unit 503 specifically can be acceleration transducer, for obtaining the acceleration of terminal.Optionally, input unit 503 specifically can be camera, for gathering preview image.
Above-mentioned output device 504 specifically can be the display screen of terminal, and for output image preview interface, image preview interface comprises preview image.
Above-mentioned memory 505 can be high-speed RAM display device, also can be non-volatile display (non-volatilememory), such as disk display, for storing preview image.Above-mentioned memory 505 is also for showing batch processing code, and above-mentioned input unit 503, output device 504 and processor 501, for calling the program code of display in memory 505, perform and operate as follows:
Whether input unit 503, detect the shooting operation of user to camera for judging in preset time period.
Processor 501, also for when the shooting operation of user to camera not detected in preset time period, reduces the image preview load of camera.
In an alternative embodiment, processor 501 reduces image preview load, is specifically as follows:
Analog voltage in image processing circuit is adjusted to predetermined analog voltage by processor 501, and predetermined analog voltage is less than analog voltage.Or
Digital voltage in image processing circuit is adjusted to preset number voltage by processor 501, and preset number voltage is less than digital voltage.
In an alternative embodiment, processor 501 reduces image preview load, is specifically as follows:
Input unit 503 gathers preview image.
Processor 501 pairs of preview images adjust, to reduce Output Size or the frame per second of preview image.
The preview image of output device 504 after the adjustment of image preview interface display.
In an alternative embodiment, processor 501 reduces image preview load, is specifically as follows:
Processor 501 suspends and carries out image procossing to preview image, and image procossing comprises noise and compensates or Images uniting.
In an alternative embodiment, processor 501 reduces image preview load, is specifically as follows:
Processor 501 control inputs device 503 suspends collection preview image.
Concrete, the terminal introduced in the embodiment of the present invention can in order to implement the part or all of flow process in the embodiment of the method for the control camera of composition graphs 1 of the present invention or Fig. 2 introduction.
Unit in all embodiments of the present invention, universal integrated circuit can be passed through, such as CPU (CentralProcessingUnit, central processing unit), or realized by ASIC (ApplicationSpecificIntegratedCircuit, application-specific integrated circuit (ASIC)).
Step in embodiment of the present invention method can be carried out order according to actual needs and be adjusted, merges and delete.
Unit in embodiment of the present invention device can carry out merging, divide and deleting according to actual needs.
In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be shown in an embodied on computer readable display medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described display medium can be magnetic disc, CD, read-only display memory body (Read-OnlyMemory, ROM) or random display memory body (RandomAccessMemory, RAM) etc.
Above disclosedly be only present pre-ferred embodiments, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (10)
1. control a method for camera, it is characterized in that, comprising:
Judge in preset time period, the shooting operation of user to camera whether detected;
When the shooting operation of user to described camera not detected in described preset time period, reduce the image preview load of described camera.
2. method according to claim 1, it is characterized in that, the image preview load of the described camera of described reduction, comprising:
Analog voltage in image processing circuit is adjusted to predetermined analog voltage, and described predetermined analog voltage is less than described analog voltage; Or
Digital voltage in described image processing circuit is adjusted to preset number voltage, and described preset number voltage is less than described digital voltage.
3. method according to claim 1, it is characterized in that, the image preview load of the described camera of described reduction, comprising:
Obtain the preview image that described camera collection arrives;
Described preview image is adjusted, to reduce Output Size or the frame per second of described preview image;
Preview image after the adjustment of image preview interface display.
4. method according to claim 1, it is characterized in that, the image preview load of the described camera of described reduction, comprising:
Suspend and carry out image procossing to described preview image, described image procossing comprises noise and compensates or Images uniting.
5. method according to claim 1, it is characterized in that, the image preview load of the described camera of described reduction, comprising:
Suspend by described camera collection preview image.
6. a terminal, is characterized in that, comprising:
Whether judging unit, detect the shooting operation of user to camera for judging in preset time period;
Load reduces unit, for when the shooting operation of user to described camera not detected in described preset time period, reduces the image preview load of described camera.
7. terminal according to claim 6, is characterized in that,
Described load reduces unit, and for the analog voltage in image processing circuit is adjusted to predetermined analog voltage, described predetermined analog voltage is less than described analog voltage; Or
Described load reduces unit, and for the digital voltage in described image processing circuit is adjusted to preset number voltage, described preset number voltage is less than described digital voltage.
8. terminal according to claim 6, is characterized in that, described load reduces unit, comprising:
Preview image acquiring unit, for obtaining the preview image that described camera collection arrives;
Preview image adjustment unit, for adjusting described preview image, to reduce Output Size or the frame per second of described preview image;
Preview image display unit, for the preview image after the adjustment of image preview interface display.
9. terminal according to claim 6, is characterized in that,
Described load reduces unit, carries out image procossing specifically for suspending to described preview image, and described image procossing comprises noise and compensates or Images uniting.
10. terminal according to claim 6, is characterized in that,
Described load reduces unit, specifically for suspending by described camera collection preview image.
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| CN201510988667.1A CN105578049A (en) | 2015-12-24 | 2015-12-24 | Camera control method and terminal |
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| CN201510988667.1A CN105578049A (en) | 2015-12-24 | 2015-12-24 | Camera control method and terminal |
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| CN117221704A (en) * | 2023-09-28 | 2023-12-12 | 中山市央果电子科技有限公司 | Camera for cradle head and application method thereof |
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