CN109474791A - Image shot by camera controls exposure method, device, terminal and storage medium - Google Patents
Image shot by camera controls exposure method, device, terminal and storage medium Download PDFInfo
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- CN109474791A CN109474791A CN201811385285.XA CN201811385285A CN109474791A CN 109474791 A CN109474791 A CN 109474791A CN 201811385285 A CN201811385285 A CN 201811385285A CN 109474791 A CN109474791 A CN 109474791A
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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
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/72—Combination of two or more compensation controls
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Abstract
The present invention relates to image shot by camera to control exposure method: carrying out scene monitoring according to environment light and pixel difference after camera unlatching, high contrast scene, it can monitor the more situation of saturated pixel and non-saturated pixel, backlight scene can monitor more saturated pixels, scene is determined according to the quantity of saturated pixel, monitor the scene that user stops, it carries out multizone and surveys light, according to multizone photometry result, with dynamic gain and dynamic exposure row, adjust the exposure activity of different zones, clear zone dynamic reduces adjust gain and exposure row, reduce the time for exposure, it reduces Gamma etc. and inhibits brightness supersaturation, dark space dynamic adjustment increased gain, Gamma etc. promotes brightness, histogram judgement, the dynamic range of imaging, depth of exposure, and image hierarchy, pass through judgement, then terminate, do not continue then to adjust by judgement Whole brightness, hence it is evident that improve the high scene of contrast and backlight scene brightness of taking pictures is bad, caused image overexposure or the problems such as brightness is inadequate, color is unnatural.
Description
Technical field
The present invention relates to technical field of image processing, control exposure side more specifically to a kind of image shot by camera
Method, device, terminal and storage medium.
Background technique
In the prior art, camera is by multiframe HDR or reduction when high dynamic range scene and backlight are taken pictures
Background luminance prevents overexposure;But scene is compared in height, HDR and reduction backlight effect bring color flat to taking pictures, noise
Greatly, the influence of narrow dynamic range;
HDR improves the effect of taking pictures of high comparison or backlight scene by overexposure, normal, three frame pictures of deficient exposure synthesis.It should
The shortcomings that method is that high dynamic range is taken pictures effect and problem bad, and that noise can be brought big.Reduce exposure: whole by reducing
The intensity of body exposure reduces effect of taking pictures.The portrait that brightness reduction has certain improvement, but shoots due in exposure intensity compared with
It is low cause it is ineffective.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, providing a kind of camera shooting figure
As control exposure method;
Additionally provide a kind of image shot by camera control exposure device, a kind of terminal and a kind of storage medium.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of image shot by camera control exposure method is constructed, its implementation is as follows:
Step 1: carrying out scene monitoring according to environment light and pixel difference;
Step 2: recognize current scene be high contrast scene or backlight scene when, to current scene carry out multizone
Dynamic surveys light;
Step 3: adjusting brightness to each regional dynamics according to dynamic photometry result.
Image shot by camera of the present invention controls exposure method, wherein further includes method: step 4: according to histogram
Image hierarchy after the judgement adjustment of figure standard deviation, it is undesirable, repeat in the third step set-up procedure to conforming to
It asks.
Image shot by camera of the present invention controls exposure method, wherein in the third step, dynamic adjusting brightness
Adjustment mode includes one or more in dynamic gain, dynamic exposure row, dynamic Gamma, dynamic object brightness and DNR dynamic noise reduction.
Image shot by camera of the present invention controls exposure method, wherein in the second step, in the current scene
It monitors when saturated pixel and more non-saturated pixel to be the high contrast scene.
Image shot by camera of the present invention controls exposure method, wherein in the second step, in the current scene
It monitors when more saturated pixels to be backlight scene.
A kind of image shot by camera control exposure device, controls exposure method according to above-mentioned image shot by camera, wherein
Including scene monitoring modular, scene Recognition module and dynamic adjustment module;
The scene monitoring modular, for carrying out scene monitoring according to environment light and pixel difference;
The scene Recognition module for receiving the current scene data of the scene monitoring, and identifies that current scene is
It is no be high contrast scene or backlight scene when, recognize current scene be high contrast scene or backlight scene when to current
Scene carries out multizone dynamic and surveys light;
The dynamic adjusts module, for the dynamic photometry result according to the scene Recognition module, to each regional dynamics
Adjust brightness.
Image shot by camera of the present invention controls exposure device, wherein the image shot by camera control exposure dress
Setting further includes adjustment judgment module;
The adjustment judgment module, for judging that the dynamic adjusts image after module adjusts according to histogram criteria deviation
Level, it is undesirable, it sends adjustment instruction to dynamic adjustment module and readjusts, until meeting the requirements.
Image shot by camera of the present invention controls exposure device, wherein the adjustment mode of the dynamic adjustment module
Including one or more in dynamic gain, dynamic exposure row, dynamic Gamma, dynamic object brightness and DNR dynamic noise reduction.
A kind of terminal, including memory, processor and storage can transport in the memory and on the processor
Capable computer program, wherein the step of processor realizes the above method when executing the computer program.
A kind of computer readable storage medium, the computer-readable recording medium storage have computer program, wherein institute
State the step of above method is realized when computer program is executed by processor.
The beneficial effects of the present invention are: scene monitoring is carried out according to environment light and pixel difference after camera unlatching, it is high right
Than degree scene, it can monitor that the more situation of saturated pixel and non-saturated pixel, backlight scene can monitor more to be saturated
Pixel determines that scene, the scene that monitoring user stops carry out multizone and survey light, according to multi-region according to the quantity of saturated pixel
Domain photometry result adjusts the exposure activity of different zones with dynamic gain and dynamic exposure row, and clear zone dynamic reduces adjustment and increases
Benefit and exposure row, reduce the time for exposure, reduce Gamma etc. and inhibit brightness supersaturation, dark space dynamic adjustment increased gain, exposure
Row, Gamma etc. promotes brightness, histogram judgement, the dynamic range of imaging, depth of exposure and image hierarchy, by judging,
Then terminate, do not continue then to adjust brightness by judgement, hence it is evident that improves the high scene of contrast and backlight scene brightness of taking pictures is bad, lead
The problems such as image overexposure of cause or brightness are inadequate, color is unnatural.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below in conjunction with attached drawing and reality
Applying example, the invention will be further described, and the accompanying drawings in the following description is only section Example of the invention, for this field
For those of ordinary skill, without creative efforts, it can also be obtained according to these attached drawings other accompanying drawings:
Fig. 1 is the image shot by camera control exposure method flow chart of present pre-ferred embodiments;
Fig. 2 is the image shot by camera control exposure device functional block diagram of present pre-ferred embodiments.
Specific embodiment
In order to keep the purposes, technical schemes and advantages of the embodiment of the present invention clearer, implement below in conjunction with the present invention
Technical solution in example carries out clear, complete description, it is clear that and described embodiment is section Example of the invention, and
It is not all of embodiment.Based on the embodiment of the present invention, those of ordinary skill in the art are not before making the creative labor
Every other embodiment obtained is put, protection scope of the present invention is belonged to.
Embodiment one
Image shot by camera control exposure method, device, terminal and the storage medium such as Fig. 1 institute of present pre-ferred embodiments
Show, its implementation is as follows:
S01: scene monitoring is carried out according to environment light and pixel difference;
S02: recognize current scene be high contrast scene or backlight scene when, to current scene carry out multizone dynamic
Survey light;
S03: according to dynamic photometry result, brightness is adjusted to each regional dynamics;
Scene monitoring is carried out according to environment light and pixel difference after camera unlatching, high contrast scene can monitor to be saturated
Pixel and the more situation of non-saturated pixel, backlight scene can monitor more saturated pixels, according to the number of saturated pixel
It measures to determine scene, monitors the scene that user stops, carry out multizone and survey light, according to multizone photometry result, with dynamically increasing
Benefit and dynamic exposure row adjust the exposure activity of different zones, and clear zone dynamic reduces adjust gain and exposure row, when reducing exposure
Between, it reduces Gamma etc. and inhibits brightness supersaturation, dark space dynamic adjusts increased gain, exposure row, and Gamma etc. promotes brightness, histogram
Figure judgement, the dynamic range of imaging, depth of exposure and image hierarchy are then terminated by judgement, are not continued then by judgement
Adjust brightness, hence it is evident that improve the high scene of contrast and backlight scene takes pictures that brightness is bad, and caused image overexposure or brightness are not
Enough, the problems such as color is unnatural.
It preferably, further include method: S04: undesirable according to image hierarchy after the judgement adjustment of histogram criteria deviation
Then repeat in third step set-up procedure to meeting the requirements;Convenient for auditing to adjustment, the accuracy of brightness adjustment is ensured.
Preferably, in third step, the adjustment mode of dynamic adjusting brightness includes dynamic gain, dynamic exposure row, dynamic
It is one or more in Gamma, dynamic object brightness and DNR dynamic noise reduction.
Preferably, it monitors to compare when saturated pixel and more non-saturated pixel to be high in second step, in current scene
Spend scene.
Preferably, it monitors when more saturated pixels to be backlight scene in second step, in current scene.
Embodiment two
A kind of image shot by camera control exposure device, controls exposure method, such as Fig. 2 according to above-mentioned image shot by camera
It is shown, including scene monitoring modular 1, scene Recognition module 2 and dynamic adjustment module 3;
Scene monitoring modular 1, for carrying out scene monitoring according to environment light and pixel difference;
Scene Recognition module 2 for receiving the current scene data of scene monitoring, and identifies whether current scene is high right
When than degree scene or backlight scene, current scene is carried out when recognizing current scene and being high contrast scene or backlight scene
Multizone dynamic surveys light;
Dynamic adjustment module 3 adjusts each regional dynamics bright for the dynamic photometry result according to scene Recognition module
Degree.
Scene monitoring is carried out according to environment light and pixel difference after camera unlatching, high contrast scene can monitor to be saturated
Pixel and the more situation of non-saturated pixel, backlight scene can monitor more saturated pixels, according to the number of saturated pixel
It measures to determine scene, monitors the scene that user stops, carry out multizone and survey light, according to multizone photometry result, with dynamically increasing
Benefit and dynamic exposure row adjust the exposure activity of different zones, and clear zone dynamic reduces adjust gain and exposure row, when reducing exposure
Between, it reduces Gamma etc. and inhibits brightness supersaturation, dark space dynamic adjusts increased gain, exposure row, and Gamma etc. promotes brightness, histogram
Figure judgement, the dynamic range of imaging, depth of exposure and image hierarchy are then terminated by judgement, are not continued then by judgement
Adjust brightness, hence it is evident that improve the high scene of contrast and backlight scene takes pictures that brightness is bad, and caused image overexposure or brightness are not
Enough, the problems such as color is unnatural.
As shown in Fig. 2, image shot by camera control exposure device further includes adjustment judgment module 4;
Judgment module 4 is adjusted, is used to judge according to histogram criteria deviation image hierarchy after dynamic adjustment module adjustment, no
It meets the requirements, sends adjustment instruction to dynamic adjustment module and readjust, until meeting the requirements;
As shown in Fig. 2, the adjustment mode of dynamic adjustment module includes dynamic gain, dynamic exposure row, dynamic Gamma, moves
It is one or more in state object brightness and DNR dynamic noise reduction.
Embodiment three
A kind of terminal including memory, processor and stores the calculating that can be run in memory and on a processor
Machine program, wherein the step of processor realizes the above method when executing computer program.
Example IV
A kind of computer readable storage medium, computer-readable recording medium storage have computer program, wherein computer
The step of above method is realized when program is executed by processor.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (10)
1. a kind of image shot by camera controls exposure method, which is characterized in that implementation method is as follows:
Step 1: carrying out scene monitoring according to environment light and pixel difference;
Step 2: recognize current scene be high contrast scene or backlight scene when, to current scene carry out multizone dynamic
Survey light;
Step 3: adjusting brightness to each regional dynamics according to dynamic photometry result.
2. image shot by camera according to claim 1 controls exposure method, which is characterized in that further include method: the 4th
Step: it is undesirable according to image hierarchy after the judgement adjustment of histogram criteria deviation, repeat to adjust in the third step
Step is to meeting the requirements.
3. image shot by camera according to claim 1 controls exposure method, which is characterized in that in the third step, move
The adjustment mode that state adjusts brightness includes dynamic gain, dynamic exposure row, dynamic Gamma, dynamic object brightness and DNR dynamic noise reduction
In it is one or more.
4. image shot by camera according to claim 1 controls exposure method, which is characterized in that in the second step, institute
It states when monitoring saturated pixel and more non-saturated pixel in current scene as the high contrast scene.
5. image shot by camera according to claim 1 controls exposure method, which is characterized in that in the second step, institute
It states when monitoring more saturated pixels in current scene as backlight scene.
6. a kind of image shot by camera controls exposure device, according to claim 1-5 any image shot by camera control
Exposure method, which is characterized in that including scene monitoring modular, scene Recognition module and dynamic adjustment module;
The scene monitoring modular, for carrying out scene monitoring according to environment light and pixel difference;
The scene Recognition module, for receiving the current scene data of scene monitoring, and identify current scene whether be
When high contrast scene or backlight scene, when recognizing current scene and being high contrast scene or backlight scene to current scene
It carries out multizone dynamic and surveys light;
The dynamic adjusts module, for the dynamic photometry result according to the scene Recognition module, adjusts to each regional dynamics
Brightness.
7. image shot by camera according to claim 6 controls exposure device, which is characterized in that the image shot by camera
Control exposure device further includes adjustment judgment module;
The adjustment judgment module, for judging that the dynamic adjusts image layer after module adjusts according to histogram criteria deviation
It is secondary, it is undesirable, it sends adjustment instruction to dynamic adjustment module and readjusts, until meeting the requirements.
8. image shot by camera according to claim 6 controls exposure device, which is characterized in that the dynamic adjusts module
Adjustment mode include a kind of or more in dynamic gain, dynamic exposure row, dynamic Gamma, dynamic object brightness and DNR dynamic noise reduction
Kind.
9. a kind of terminal, including memory, processor and storage can be run in the memory and on the processor
Computer program, which is characterized in that the processor is realized when executing the computer program as claim 1 to 5 is any
The step of item the method.
10. a kind of computer readable storage medium, the computer-readable recording medium storage has computer program, and feature exists
In when the computer program is executed by processor the step of any one of such as claim 1 to 5 of realization the method.
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Cited By (6)
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CN111726541A (en) * | 2019-03-21 | 2020-09-29 | 北京猎户星空科技有限公司 | Method, device, equipment and medium for determining shooting parameters |
CN112036278A (en) * | 2020-08-21 | 2020-12-04 | 上海明略人工智能(集团)有限公司 | Scene monitoring method and system based on image recognition |
CN112361990A (en) * | 2020-10-29 | 2021-02-12 | 深圳市道通科技股份有限公司 | Laser pattern extraction method and device, laser measurement equipment and system |
CN112738412A (en) * | 2020-12-31 | 2021-04-30 | 佛山市南海天富科技有限公司 | Full-automatic light supplementing method and device based on warp knitting machine flaw detection system |
CN113132646A (en) * | 2021-03-30 | 2021-07-16 | 深圳市阿达视高新技术有限公司 | High dynamic range image generation method and device, computer equipment and storage medium |
CN117135470A (en) * | 2023-02-23 | 2023-11-28 | 荣耀终端有限公司 | Shooting method, electronic equipment and storage medium |
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CN117135470A (en) * | 2023-02-23 | 2023-11-28 | 荣耀终端有限公司 | Shooting method, electronic equipment and storage medium |
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Application publication date: 20190315 |