CN104754200A - Method and system for adjusting automatic exposure - Google Patents
Method and system for adjusting automatic exposure Download PDFInfo
- Publication number
- CN104754200A CN104754200A CN201310752780.0A CN201310752780A CN104754200A CN 104754200 A CN104754200 A CN 104754200A CN 201310752780 A CN201310752780 A CN 201310752780A CN 104754200 A CN104754200 A CN 104754200A
- Authority
- CN
- China
- Prior art keywords
- frame
- threshold value
- camera head
- length
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Studio Devices (AREA)
Abstract
The invention relates to a method and a system for adjusting an automatic exposure, which are used for a camera device. The method comprises the following steps: a, calculating a deviation measure value according to current brightness and target brightness of a picture of the camera device; b, comparing the deviation measure value with a frame reduction threshold value and a frame increasing threshold value respectively to determine a way of adjusting the frame rate of the camera device; reducing the frame rate of the camera device when the deviation measure value is smaller than the frame reduction threshold value and gain of the camera device reaches the maximum gain; increasing the frame rate of the camera device when the deviation measure value is greater than or equal to the frame reduction threshold value; keeping the frame rate of the camera device when the deviation measure value is greater than the frame reduction threshold value and is smaller than the frame increasing threshold value, wherein the frame reduction threshold value is smaller than the frame increasing threshold value.
Description
Technical field
The present invention relates to camera head, especially relate in camera head the method and system adjusting automatic exposure amount.
Background technology
Camera head, such as camera and/or video camera have become the indispensability composition of various portable electric appts.People use portable electric appts, and such as mobile phone, panel computer or card type digital camera catch the event of daily life.The feature of this kind of application pays close attention to the convenience used, and to the requirement of shooting quality then secondarily, therefore expects that its parameter adjustment directly can be taken to rational scope with person easy to use when not needing user to intervene by camera head automatically.Exposure is then an important parameter in all multi-parameters.
Automatic exposure is that camera head adjusts exposure automatically according to the power of light, prevents over-exposed or not enough and picture brightness that is that cause does not reach ideal effect.But when scene contrast is very large, the adjustable extent of exposure may be not enough to the change adapting to this scene.Reason is, camera head arranges fixing frame per second acquiescently, which has limited the adjustable extent of exposure.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method and apparatus adjusting automatic exposure amount, and it expands the adjustable extent of exposure by dynamic conditioning frame per second.
The present invention be solve the problems of the technologies described above the technical scheme adopted be propose a kind of method adjusting automatic exposure amount, for a camera head, the method comprises the following steps:
A. an irrelevance value is calculated according to the present intensity of this camera head picture and object brightness;
B. compare this irrelevance value and one respectively and fall frame threshold value and one liter of frame threshold value to determine how to adjust the frame per second of camera head,
Fall frame threshold value when this irrelevance value is less than or equal to this, and when the gain of this camera head has reached maximum gain, reduce the frame per second of this camera head;
When this irrelevance value be more than or equal to this rise frame threshold value time, improve the frame per second of this camera head;
Fall frame threshold value when this irrelevance value is less than or equal to this, and the gain of this camera head does not reach maximum gain, or this irrelevance value is greater than this and falls frame threshold value and be less than this when rising frame threshold value, keeps the frame per second of this camera head;
Wherein this falls frame threshold value and is less than this and rises frame threshold value.
In one embodiment of this invention, this falls frame threshold value and comprises the first step-length and fall frame threshold value and frame threshold value falls in the second step-length, when this irrelevance value is less than or equal to this first step-length, frame threshold value is fallen, and the gain of this camera head is when having reached maximum gain, with first, the frame per second that frame step-length reduces this camera head is fallen, fall frame threshold value and be less than or equal to this second step-length fall frame threshold value when this irrelevance value is greater than this first step-length, and the gain of this camera head is when having reached maximum gain, with second, the frame per second that frame step-length reduces this camera head is fallen, wherein this first step-length is fallen frame threshold value and is less than this second step-length and falls frame threshold value, this first falls frame step-length and is greater than this and second falls frame step-length.
In one embodiment of this invention, this rises frame threshold value and comprises the first step-length and rise frame threshold value and the second step-length rises frame threshold value, when this irrelevance value be more than or equal to this first step-length rise frame threshold value time, the frame per second of this camera head is raised with first liter of frame step-length, when this irrelevance value be less than this first step-length rise frame threshold value and be more than or equal to this second step-length rise frame threshold value time, the frame per second of this camera head is raised with second liter of frame step-length, wherein this first step-length rises frame threshold value and is greater than this second step-length and rises frame threshold value, and this first liter of frame step-length is greater than this second liter of frame step-length.
In one embodiment of this invention, repeat this step a and b, make the brightness Step wise approximation object brightness of picture.
In one embodiment of this invention, this step a performs when the preview state of this camera head.
In one embodiment of this invention, this step a performs when the photography state of this camera head.
In one embodiment of this invention, the method adjusting the frame per second of this camera head comprises vertical total line number of this camera head of adjustment.
In one embodiment of this invention, said method also comprises in the register of vertical total line number write imageing sensor of adjustment.
In one embodiment of this invention, said method also comprises the scope recalculating exposure value according to the vertical total line number through adjustment.
The present invention also proposes a kind of system adjusting automatic exposure amount, and be arranged in a camera head, this system comprises: for the module of the irrelevance value of the present intensity and object brightness that calculate this camera head picture; And for comparing this irrelevance value and one respectively frame threshold value and one liter of frame threshold value are fallen to determine the module of the frame per second how adjusting camera head, wherein when this irrelevance value is less than or equal to this, frame threshold value is fallen, and the gain of this camera head is when having reached maximum gain, reduce the frame per second of this camera head; When this irrelevance value be more than or equal to this rise frame threshold value time, improve the frame per second of this camera head; Fall frame threshold value when this irrelevance value is less than or equal to this, and the gain of this camera head does not reach maximum gain, or this irrelevance value is greater than this and falls frame threshold value and be less than this when rising frame threshold value, keeps the frame per second of this camera head; Wherein this falls frame threshold value and is less than this and rises frame threshold value.
The present invention also proposes a kind of camera head, comprises the system of adjustment automatic exposure amount as above.
The present invention, by expanding the adjustable extent of exposure to the dynamic conditioning of frame per second, makes still can obtain preferably visual effect under the occasion that scene changes is large.Secondly, the present invention can according to the extent of deviation of the picture brightness of current acquisition and object brightness, be divided into multiple rank and dynamically carry out the lifting frame process of large step-length or little step-length to carry out frame per second adjustment, adopt the stability region between little step-length and lifting frame threshold value to prevent the picture brightness flicker change caused because of exposure accommodative excess.
Accompanying drawing explanation
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated, wherein:
Fig. 1 illustrates camera device structure block diagram according to an embodiment of the invention.
Fig. 2 illustrates the flow chart of the automatic adjustment exposure of one embodiment of the invention.
Fig. 3 illustrates the flow chart by different step-length adjustment frame per second of one embodiment of the invention.
Fig. 4 illustrates the flow chart implementing adjustment exposure automatically in camera head.
Embodiment
Embodiments of the invention describe a kind of brightness according to current picture, adjust frame per second quickly and accurately to expand the method for the adjustable exposure range of camera head.
Fig. 1 illustrates camera device structure block diagram according to an embodiment of the invention.Shown in figure 1, camera head 100 can comprise imageing sensor 110, picture signal process (Image Signal Processing, ISP) module 120 and image control system 130.Imageing sensor 110 is for photosensitive and be converted to the signal of telecommunication of subsequent module identifiable design and process.Imageing sensor 110 contains register 111 to configure its parameter, such as exposure value, gain etc.Image signal processing blocks 120 can calculate aforesaid parameter, uses for imageing sensor 110.The running of image control system 130 control chart image-position sensor 110, image signal processing blocks 120.Be appreciated that camera head also comprises the parts such as camera lens, aperture, display screen.For simplicity, remainder unrelated to the invention in not shown camera head.
Fig. 2 illustrates the flow chart of the automatic adjustment exposure of one embodiment of the invention.Shown in figure 2, the method for the adjustment automatic exposure amount of the present embodiment, comprises the following steps:
In step 201, calculate an irrelevance value according to the present intensity of camera head picture and object brightness.
This irrelevance value weighs the gap between present intensity and object brightness.Irrelevance value can be the difference between present intensity and object brightness, or the ratio between present intensity and object brightness, or both weighing between other result of calculations of gap.
In an example, step 201 is performed when the preview state of camera head.In preview state, user be preview to the picture effect namely will taken, but not yet use camera head photographic images or image.
In another example, also step 201 can be performed when camera head is in photography state.In photography state, automatically adjust exposure according to scene changes and contribute to making image remain on better quality.
In step 202, compare this irrelevance value and one respectively and fall frame threshold value and one liter of frame threshold value to determine how to adjust the frame per second of camera head.
Specifically, when exposure arrives maximum, and picture brightness is still too dark, then frame per second needs to be lowered with admissible lifting maximum exposure amount; When picture brightness is too high, then frame per second needs to be raised to allow reduction maximum exposure amount; When picture brightness is in suitable scope, although the brightness of possibility miss the mark, by adjusting exposure to reach object brightness in existing exposure range, therefore frame per second can be adjusted.
Therefore in step 202., fall frame threshold value when irrelevance value is less than or equal to, and when the gain of camera head has reached maximum gain, reduce the frame per second of this camera head; When irrelevance value be more than or equal to rise frame threshold value time, improve the frame per second of this camera head; Fall frame threshold value when irrelevance value is less than or equal to, and the gain of camera head does not reach maximum gain, or irrelevance value is greater than and falls frame threshold value and be less than when rising frame threshold value, keeps the frame per second of camera head.At this, fall frame threshold value and be less than and rise frame threshold value.
In above-mentioned flow process, can be judged whether by the image of catching N continuous frame to need to be elevated frame, prevent the impact caused because of float.Specifically, in step 201 according to the irrelevance value of the present intensity and object brightness that calculate N continuous frame picture respectively, then judge whether respectively in step 202. to need rise frame or fall frame, when only having this N continuous frame all to need rise frame or fall frame, just carry out rising frame or falling frame.
In the context of the present invention, frame per second refers to the frame number of shooting per second.In the image control system of camera head, frame per second (framerate), system clock (clksys), vertical total line number (Vertical total Size, VTS), the relation following expression of the total columns of level (Horizontal Total Size, HTS):
clk
sys=framerate×VTS×HTS×a (1)
Wherein α is constant.In this expression formula, due to clk
sys, HTS, α be definite value, therefore framerate and VTS is inversely, can carry out ascending, descending process respectively, and then change the adjustable extent of exposure by changing VTS to frame per second.That is, the adjustment to VTS is converted to the adjustment of frame per second.
In the present embodiment, fixing step-length can be set to adjust frame per second (or VTS).By repeated execution of steps 201-202, picture brightness is made to approach object brightness step by step.
Consider that fixed step size may cause the adjustment of brightness too fierce, cause the picture brightness flicker change caused because of exposure accommodative excess, another embodiment of the present invention is provided with the adjustment step-length of multiple different stage.Specifically, can arrange first and fall frame step-length and second and fall frame step-length, first falls frame step-length is greater than second and falls frame step-length.Corresponding, arrange the first step-length and fall frame threshold value and frame threshold value falls in the second step-length, this first step-length is fallen frame threshold value and is less than this second step-length and falls frame threshold value.Similar, can arrange first liter of frame step-length and second liter of frame step-length, first liter of frame step-length is greater than second liter of frame step-length.Corresponding, arrange the first step-length and rise frame threshold value and frame threshold value falls in the second step-length, this first step-length is fallen frame threshold value and is greater than this second step-length and falls frame threshold value.
When aforementioned irrelevance value is less than or equal to the first step-length, frame threshold value is fallen, and the gain of camera head is when having reached maximum gain, with first, the frame per second that frame step-length reduces camera head is fallen, fall frame threshold value and be less than or equal to the second step-length fall frame threshold value when irrelevance value is greater than the first step-length, and the gain of camera head is when having reached maximum gain, with second, the frame per second that frame step-length reduces this camera head has been fallen.
Similar, when aforementioned irrelevance value be more than or equal to the first step-length rise frame threshold value time, the frame per second of this camera head is raised with first liter of frame step-length, when this irrelevance value be less than this first step-length rise frame threshold value and be more than or equal to this second step-length rise frame threshold value time, raise the frame per second of camera head with second liter of frame step-length.
Fig. 3 illustrates the flow chart by different step-length adjustment frame per second of one embodiment of the invention.Shown in figure 3, the ratio beta in figure is the example of irrelevance value, and level refers to the rank of determined ascending, descending frame.When the signal that image processing module 120 terminates to image control system 110 transmission frame, image control system 110 can read mean flow rate and the object brightness of current preview from image processing module 120, and determines whether the rank level that needs to adjust frame per second and be elevated frame according to both ratio beta and the relation of the threshold value of the lifting frame preset.If level=LEVEL1 when frame threshold value falls in the step-length of current set gain and β identical with maximum gain≤greatly, shows to need to adopt large step-length to carry out the process of fast prompt drop frame; When level=LEVEL2 when frame threshold value falls in frame threshold value < β≤little step-length falls in large step-length, show to need to adopt small step progress row accurately to fall frame process; When large step-length rises level=LEVEL3 when frame threshold value > β >=little step-length rises frame threshold value, show to need to adopt small step progress row accurately to rise frame process; The level=LEVEL4 when β >=large step-length rises frame threshold value, shows to need to adopt large step-length to rise frame process fast; If do not meet above-mentioned condition, β is in level=LEVEL0 when the stability region that frame threshold value and little step-length rise between frame threshold value falls in little step-length, needs to keep former frame per second constant.
For example, frame threshold value falls in large step-length can be set to 25, and frame threshold value falls in little step-length can be set to 50, and little step-length rises frame threshold value can be set to 100, and large step-length rises frame threshold value can be set to 120, and the interval range of stability region is (50,100).
In the present embodiment, still need, after adjusting frame per second by each step-length, to repeat flow process, make the brightness Step wise approximation object brightness of picture.
Be appreciated that embodiments of the invention do not limit the step-length rising frame or fall frame and are only two-stage, also can be more multistage.
Fig. 4 illustrates the flow chart implementing adjustment exposure automatically in camera head.Shown in figure 4, the level value that image control system 130 continuously obtains every frame image data by aforesaid mode determines whether to need to adjust current frame per second, for the special circumstances such as prevent that image from shaking suddenly, when the data getting N continuous frame need adjustment frame per second, then according to the level value of present frame, VTS is carried out to the lifting frame process of step-length or little step-length greatly accordingly.The driver module of imageing sensor 110 is according to the timing requirements of imageing sensor 110 afterwards, by the VTS calculated and the exposure value read from image signal processing blocks 120, the corresponding register of gain write imageing sensor 110, subsequent picture transducer 110 exports the view data after adjusting accordingly according to this exposure value, gain.When image signal processing blocks 120 gets the signal that frame starts, image control system 130 can obtain current VTS and calculate the maximum exposure value made new advances according to this VTS value, and by corresponding register in the two write image signal processing blocks 120, carry out follow-up automatic exposure process by image signal processing blocks 120.So continuously repeat said process, make the brightness of the brightness Step wise approximation target of current preview, reach desirable visual effect.
Compared with existing automatic exposure amount adjustment method, embodiments of the invention, by expanding the adjustable extent of exposure to the dynamic conditioning of frame per second, make still can obtain preferably visual effect under the occasion that scene changes is large.Secondly, embodiments of the invention can according to the extent of deviation of the picture brightness of current acquisition and object brightness, be divided into multiple rank and dynamically carry out the lifting frame process of large step-length or little step-length to carry out frame per second adjustment, adopt the stability region between little step-length and lifting frame threshold value to prevent the picture brightness flicker change caused because of exposure accommodative excess.
Embodiments of the invention may be implemented in various camera head, such as the device of camera, video camera or integrated two kinds of functions.This camera head can be the special equipment only with camera function, also can be the various portable electric appts comprising camera function, such as mobile phone, panel computer etc.
Although the present invention discloses as above with preferred embodiment; so itself and be not used to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when doing a little amendment and perfect, therefore protection scope of the present invention is when being as the criterion of defining with claims.
Claims (11)
1. adjust a method for automatic exposure amount, for a camera head, the method comprises the following steps:
A. an irrelevance value is calculated according to the present intensity of this camera head picture and object brightness;
B. compare this irrelevance value and one respectively and fall frame threshold value and one liter of frame threshold value to determine how to adjust the frame per second of camera head,
Fall frame threshold value when this irrelevance value is less than or equal to this, and when the gain of this camera head has reached maximum gain, reduce the frame per second of this camera head;
When this irrelevance value be more than or equal to this rise frame threshold value time, improve the frame per second of this camera head;
Fall frame threshold value when this irrelevance value is less than or equal to this, and the gain of this camera head does not reach maximum gain, or this irrelevance value is greater than this and falls frame threshold value and be less than this when rising frame threshold value, keeps the frame per second of this camera head;
Wherein this falls frame threshold value and is less than this and rises frame threshold value.
2. the method for claim 1, it is characterized in that, this falls frame threshold value and comprises the first step-length and fall frame threshold value and frame threshold value falls in the second step-length, when this irrelevance value is less than or equal to this first step-length, frame threshold value is fallen, and the gain of this camera head is when having reached maximum gain, with first, the frame per second that frame step-length reduces this camera head is fallen, fall frame threshold value and be less than or equal to this second step-length fall frame threshold value when this irrelevance value is greater than this first step-length, and the gain of this camera head is when having reached maximum gain, with second, the frame per second that frame step-length reduces this camera head is fallen, wherein this first step-length is fallen frame threshold value and is less than this second step-length and falls frame threshold value, this first falls frame step-length and is greater than this and second falls frame step-length.
3. the method for claim 1, it is characterized in that, this rises frame threshold value and comprises the first step-length and rise frame threshold value and the second step-length rises frame threshold value, when this irrelevance value be more than or equal to this first step-length rise frame threshold value time, the frame per second of this camera head is raised with first liter of frame step-length, when this irrelevance value be less than this first step-length rise frame threshold value and be more than or equal to this second step-length rise frame threshold value time, the frame per second of this camera head is raised with second liter of frame step-length, wherein this first step-length rises frame threshold value and is greater than this second step-length and rises frame threshold value, this first liter of frame step-length is greater than this second liter of frame step-length.
4. the method as described in any one of claim 1-3, is characterized in that, the method adjusting the frame per second of this camera head comprises vertical total line number of this camera head of adjustment.
5. method as claimed in claim 4, is characterized in that, also comprises in the register of vertical total line number write imageing sensor of adjustment.
6. method as claimed in claim 4, is characterized in that, also comprises and recalculates maximum exposure value according to the vertical total line number through adjustment, and write in image processor.
7. the method for claim 1, is characterized in that, this step a performs when the preview state of this camera head.
8. the method for claim 1, is characterized in that, this step a performs when the photography state of this camera head.
9. as claim 1-3,5, method as described in 6 any one, it is characterized in that, repeat this step a and b, make the brightness Step wise approximation object brightness of picture.
10. adjust a system for automatic exposure amount, be arranged in a camera head, this system comprises:
For the module of the irrelevance value of the present intensity and object brightness that calculate this camera head picture; And
For comparing this irrelevance value and one respectively frame threshold value and one liter of frame threshold value are fallen to determine the module of the frame per second how adjusting camera head, wherein when this irrelevance value is less than or equal to this, frame threshold value is fallen, and the gain of this camera head is when having reached maximum gain, reduce the frame per second of this camera head; When this irrelevance value be more than or equal to this rise frame threshold value time, improve the frame per second of this camera head; Fall frame threshold value when this irrelevance value is less than or equal to this, and the gain of this camera head does not reach maximum gain, or this irrelevance value is greater than this and falls frame threshold value and be less than this when rising frame threshold value, keeps the frame per second of this camera head; Wherein this falls frame threshold value and is less than this and rises frame threshold value.
11. 1 kinds of camera heads, comprise the system of adjustment automatic exposure amount as claimed in claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752780.0A CN104754200A (en) | 2013-12-31 | 2013-12-31 | Method and system for adjusting automatic exposure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752780.0A CN104754200A (en) | 2013-12-31 | 2013-12-31 | Method and system for adjusting automatic exposure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104754200A true CN104754200A (en) | 2015-07-01 |
Family
ID=53593254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310752780.0A Pending CN104754200A (en) | 2013-12-31 | 2013-12-31 | Method and system for adjusting automatic exposure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104754200A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105791699A (en) * | 2016-04-26 | 2016-07-20 | 惠州Tcl移动通信有限公司 | Method, system and mobile terminal for adjusting camera shooting frame rate |
| CN106412451A (en) * | 2015-07-28 | 2017-02-15 | 联发科技股份有限公司 | Image processing method, device and system |
| CN106454127A (en) * | 2016-11-29 | 2017-02-22 | 惠州Tcl移动通信有限公司 | Method and system of improving the starting speed of camera of mobile terminal |
| CN106454140A (en) * | 2015-08-06 | 2017-02-22 | 联想(北京)有限公司 | Information processing method and electronic device |
| CN107959965A (en) * | 2017-11-20 | 2018-04-24 | 广东欧珀移动通信有限公司 | Frame dropping method, device, mobile terminal and the readable storage medium storing program for executing of application program |
| CN108606804A (en) * | 2016-12-13 | 2018-10-02 | 上海西门子医疗器械有限公司 | The automated calibration system and method and Medical Devices of auto-exposure control |
| CN109120856A (en) * | 2018-10-26 | 2019-01-01 | 珠海格力电器股份有限公司 | Camera shooting method and device |
| CN109618107A (en) * | 2018-12-20 | 2019-04-12 | 天津天地伟业信息系统集成有限公司 | A kind of AE adjusting method in high-speed motion |
| CN111385484A (en) * | 2018-12-28 | 2020-07-07 | 北京字节跳动网络技术有限公司 | Information processing method and device |
| CN111405199A (en) * | 2020-03-27 | 2020-07-10 | 维沃移动通信（杭州）有限公司 | Image shooting method and electronic equipment |
| CN112584030A (en) * | 2019-09-27 | 2021-03-30 | 中移物联网有限公司 | Driving video recording method and electronic equipment |
| CN113411528A (en) * | 2019-02-28 | 2021-09-17 | 华为技术有限公司 | Video frame rate control method and related device |
| CN114268703A (en) * | 2021-12-27 | 2022-04-01 | 安徽淘云科技股份有限公司 | Imaging adjusting method and device during screen scanning, storage medium and equipment |
| CN115914801A (en) * | 2023-02-21 | 2023-04-04 | 哈尔滨学院 | A control system for multi-light time-lapse photography |
| CN116723410A (en) * | 2022-09-16 | 2023-09-08 | 荣耀终端有限公司 | Method and device for adjusting frame interval |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1547070A (en) * | 2003-12-09 | 2004-11-17 | An automatic exposure method under the condition of dynamic frame rate | |
| CN101262567A (en) * | 2008-04-07 | 2008-09-10 | 北京中星微电子有限公司 | Automatic exposure method and device |
| CN101399919A (en) * | 2007-09-25 | 2009-04-01 | 展讯通信（上海）有限公司 | Method for automatic exposure and automatic gain regulation and method thereof |
| CN101472077A (en) * | 2007-12-28 | 2009-07-01 | 华晶科技股份有限公司 | Digital photographic apparatus with luminance compensation and compensation process thereof |
| US20100073552A1 (en) * | 2008-09-19 | 2010-03-25 | Altek Corporation | Image brightness correction method |
| CN102790862A (en) * | 2012-07-30 | 2012-11-21 | 成都西可科技有限公司 | Method for dynamically improving effect of cell phone front camera |
| CN103024279A (en) * | 2012-12-27 | 2013-04-03 | 上海华勤通讯技术有限公司 | Camera brightness regulating device and implementation method thereof |
-
2013
- 2013-12-31 CN CN201310752780.0A patent/CN104754200A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1547070A (en) * | 2003-12-09 | 2004-11-17 | An automatic exposure method under the condition of dynamic frame rate | |
| CN101399919A (en) * | 2007-09-25 | 2009-04-01 | 展讯通信（上海）有限公司 | Method for automatic exposure and automatic gain regulation and method thereof |
| CN101472077A (en) * | 2007-12-28 | 2009-07-01 | 华晶科技股份有限公司 | Digital photographic apparatus with luminance compensation and compensation process thereof |
| CN101262567A (en) * | 2008-04-07 | 2008-09-10 | 北京中星微电子有限公司 | Automatic exposure method and device |
| US20100073552A1 (en) * | 2008-09-19 | 2010-03-25 | Altek Corporation | Image brightness correction method |
| CN102790862A (en) * | 2012-07-30 | 2012-11-21 | 成都西可科技有限公司 | Method for dynamically improving effect of cell phone front camera |
| CN103024279A (en) * | 2012-12-27 | 2013-04-03 | 上海华勤通讯技术有限公司 | Camera brightness regulating device and implementation method thereof |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106412451A (en) * | 2015-07-28 | 2017-02-15 | 联发科技股份有限公司 | Image processing method, device and system |
| CN106454140A (en) * | 2015-08-06 | 2017-02-22 | 联想(北京)有限公司 | Information processing method and electronic device |
| CN106454140B (en) * | 2015-08-06 | 2019-06-25 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
| CN105791699B (en) * | 2016-04-26 | 2019-03-26 | 惠州Tcl移动通信有限公司 | A kind of adjusting method, system and the mobile terminal of camera shooting frame rate |
| CN105791699A (en) * | 2016-04-26 | 2016-07-20 | 惠州Tcl移动通信有限公司 | Method, system and mobile terminal for adjusting camera shooting frame rate |
| CN106454127A (en) * | 2016-11-29 | 2017-02-22 | 惠州Tcl移动通信有限公司 | Method and system of improving the starting speed of camera of mobile terminal |
| CN108606804A (en) * | 2016-12-13 | 2018-10-02 | 上海西门子医疗器械有限公司 | The automated calibration system and method and Medical Devices of auto-exposure control |
| CN107959965B (en) * | 2017-11-20 | 2021-03-19 | Oppo广东移动通信有限公司 | Frame dropping method and device of application program, mobile terminal and readable storage medium |
| CN107959965A (en) * | 2017-11-20 | 2018-04-24 | 广东欧珀移动通信有限公司 | Frame dropping method, device, mobile terminal and the readable storage medium storing program for executing of application program |
| CN109120856A (en) * | 2018-10-26 | 2019-01-01 | 珠海格力电器股份有限公司 | Camera shooting method and device |
| CN109618107A (en) * | 2018-12-20 | 2019-04-12 | 天津天地伟业信息系统集成有限公司 | A kind of AE adjusting method in high-speed motion |
| CN111385484A (en) * | 2018-12-28 | 2020-07-07 | 北京字节跳动网络技术有限公司 | Information processing method and device |
| CN113411528A (en) * | 2019-02-28 | 2021-09-17 | 华为技术有限公司 | Video frame rate control method and related device |
| US20220174238A1 (en) * | 2019-02-28 | 2022-06-02 | Huawei Technologies Co., Ltd. | Recording Frame Rate Control Method and Related Apparatus |
| US11818497B2 (en) * | 2019-02-28 | 2023-11-14 | Huawei Technologies Co., Ltd. | Recording frame rate control method and related apparatus |
| CN112584030A (en) * | 2019-09-27 | 2021-03-30 | 中移物联网有限公司 | Driving video recording method and electronic equipment |
| CN112584030B (en) * | 2019-09-27 | 2022-06-14 | 中移物联网有限公司 | Driving video recording method and electronic equipment |
| CN111405199A (en) * | 2020-03-27 | 2020-07-10 | 维沃移动通信（杭州）有限公司 | Image shooting method and electronic equipment |
| CN114268703A (en) * | 2021-12-27 | 2022-04-01 | 安徽淘云科技股份有限公司 | Imaging adjusting method and device during screen scanning, storage medium and equipment |
| CN114268703B (en) * | 2021-12-27 | 2024-10-18 | 安徽淘云科技股份有限公司 | Imaging adjustment method and device, storage medium and equipment during screen scanning |
| CN116723410A (en) * | 2022-09-16 | 2023-09-08 | 荣耀终端有限公司 | Method and device for adjusting frame interval |
| CN116723410B (en) * | 2022-09-16 | 2024-03-22 | 荣耀终端有限公司 | Method and device for adjusting frame interval |
| CN115914801A (en) * | 2023-02-21 | 2023-04-04 | 哈尔滨学院 | A control system for multi-light time-lapse photography |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104754200A (en) | Method and system for adjusting automatic exposure | |
| US20180241922A1 (en) | Adjustment for cameras for low power mode operation | |
| CN110619860B (en) | Screen refresh rate adjusting method and device, storage medium and electronic equipment | |
| US8339506B2 (en) | Image capture parameter adjustment using face brightness information | |
| TWI433533B (en) | Image capturing device and image synthesis method thereof | |
| US8639027B2 (en) | Method for removing color noise and image-capturing device that uses this method | |
| US20130286236A1 (en) | System and method of adjusting camera image data | |
| US10133934B2 (en) | Systems and methods for post processing time-lapse videos | |
| US10531013B2 (en) | Image processing apparatus and method for controlling image processing apparatus | |
| CN105979162A (en) | Automatic exposure adjustment method and device for extensible dynamic range images | |
| CN103685902A (en) | Mobile phone using camera photosensitive chip to control flashlight | |
| CN110970001B (en) | Screen brightness adjusting method and device, electronic equipment and computer storage medium | |
| US20110019019A1 (en) | Method and system for processing photograph in camera device | |
| CN110445989A (en) | Image processing method, image processing device, storage medium and electronic equipment | |
| CN110213502A (en) | Image processing method, image processing device, storage medium and electronic equipment | |
| CN102262330A (en) | Automatic exposure method and apparatus thereof | |
| JP6096298B2 (en) | Backlight correction method, apparatus and terminal | |
| JP2009296245A (en) | Backlight adjustment device of portable terminal with camera | |
| US9743009B2 (en) | Image processing method and image processing device | |
| US20150062185A1 (en) | Electronic apparatus and method for controlling brightness for a display | |
| CN108989689A (en) | A kind of method and apparatus of adjust automatically exposure gain | |
| US8144216B2 (en) | Imaging apparatus and imaging method | |
| CN102984463A (en) | Method and system for image processing | |
| CN101140184B (en) | Method and device for automatically measuring ambient brightness | |
| US8358368B2 (en) | Image processing device and image processing method thereof for picking up images of scene of high luminance difference |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150701 |
|
| WD01 | Invention patent application deemed withdrawn after publication |