CN105657245A - Method and apparatus for controlling image exposure convergence in camera starting - Google Patents
Method and apparatus for controlling image exposure convergence in camera starting Download PDFInfo
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- CN105657245A CN105657245A CN201510758290.0A CN201510758290A CN105657245A CN 105657245 A CN105657245 A CN 105657245A CN 201510758290 A CN201510758290 A CN 201510758290A CN 105657245 A CN105657245 A CN 105657245A
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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
- H04N23/62—Control of parameters via user interfaces
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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
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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
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Studio Devices (AREA)
- Exposure Control For Cameras (AREA)
Abstract
The present invention relates to a method and an apparatus for controlling image exposure convergence in camera starting. The method comprises the steps of responding to a starting operation of a user for a camera, and selecting non-boundary exposure parameters in an exposure parameter range; and taking the non-boundary exposure parameters as initial exposure parameters so as to perform exposure convergence processing on an image in camera starting till the exposure convergence process is terminated. According to the method and apparatus for controlling image exposure convergence in camera starting, the AE convergence process of the image in camera starting can be shortened, and a rapid, smooth camera starting image is presented to a user.
Description
Technical field
The present invention relates to image processing techniques, relate in particular to a kind of imaged for camera start time controlThe method and apparatus of exposure convergence.
Background technology
At present, the terminal devices such as camera on the market, mobile phone, Ipad in the time of start camera function,There is the process of when start image automatic exposure convergence in capital, its show as screen picture from dark byFade to normal demonstration or converge to gradually normal demonstration by very bright.
Due to the process that the image exposure of existing camera start is restrained, be to control exposure parameter from itA boundary value of scope starts to carry out initial exposure, and when exposure parameter corresponding to convergence target withWhen initial exposure parameter differs larger, the time of exposure convergence will be longer, when corresponding start, schemesThe process that picture shows will be longer, brings bad experience impression to user.
Summary of the invention
The embodiment of the present invention provide a kind of method for the imaged exposure convergence of camera start time control andDevice, to shorten the AE convergence process of camera at when start image, present to user fast, streamSmooth start-up picture.
For achieving the above object, the control chart when embodiment of the present invention provides one to start shooting for cameraThe method of picture exposure convergence, comprising: the start operation in response to user to camera, choose exposure ginsengNon-border exposure parameter in number scope; Adopt described non-border exposure parameter to join as initial exposureSeveral to when start image convergence process of exposing, until exposure convergence process finishes.
The embodiment of the present invention also provides a kind of dress for the imaged exposure convergence of camera start time controlPut, comprising: parameter is chosen module, for the start operation to camera in response to user, choose and expose to the sunNon-border exposure parameter in optical parameter scope; Exposure-processed module, for adopting described non-borderExposure parameter as initial exposure parameter to when start image convergence process of exposing, until exposureConvergence process finishes.
Method and dress for the imaged exposure convergence of camera start time control that the embodiment of the present invention providesPut, after camera is opened, in choosing scope, the exposure parameter on non-border is as initialExposure parameter control camera is carried out the automatic exposure convergence process of when start image, and exposes from borderThe parameter value convergence that starts to expose can be shortened exposure convergence time on very large probability.
Brief description of the drawings
Fig. 1 is one of the method restraining for the imaged exposure of camera start time control provided by the inventionThe method flow diagram of embodiment;
Fig. 2 be the method for the imaged exposure convergence of camera start time control provided by the invention anotherThe method flow diagram of individual embodiment;
Fig. 3 is one, device of restraining for the imaged exposure of camera start time control provided by the inventionThe structural representation of embodiment;
Fig. 4 be the device for the imaged exposure convergence of camera start time control provided by the invention anotherThe structural representation of individual embodiment.
Description of reference numerals:
310-parameter is chosen module, 320-exposure-processed module, 330-parameter and is searched module, 340-Parameter memory module.
Detailed description of the invention
The adjusting of existing automatic exposure, be based on camera after each acquisition frame image, image is enteredRow photometry, then by photometry result, receives as time for exposure and unit interval exposure parameterLight quantity (corresponding to high gain of light gain) regulate, finally to converge to desired value. PopularSay, exposure compensating similarly is to do addition and subtraction on the numerical value of photometry, thus make compensation after exposureValue more meets our needs.
The Exposure Metering of existing camera mainly comprises 3 kinds: matrix photometry (average metering), centerWeight photometry and some photometry. The main distinction of these 3 kinds of Exposure Meterings is the difference of photometry region,Matrix photometry is chosen almost all area of visual field and is carried out photometry, then according to point laying of brightness, colorFixed final numerical value; Center weight is to choose picture central, circular area metering; Point photometry is to choose pictureIn face, a bit carry out photometry. In this programme, exposure convergence process is through center weight photometryMode regulate exposure. In the time that the excursion of incident intensity has exceeded the control range of exposure,Can gain by raising (in the time of low-light level) or reduce gain (in the time of high brightness) and regulate.
Embodiment mono-
Fig. 1 is one of the method restraining for the imaged exposure of camera start time control provided by the inventionThe method flow diagram of embodiment, the executive agent of the method can be for having IMAQ and processing meritThe camera of energy and the terminal device that is integrated with camera function, as mobile phone, Ipad etc. As shown in Figure 1,This method that is used for the imaged exposure convergence of camera start time control comprises the steps:
S110, the start operation in response to user to camera, the non-limit in choosing scopeBoundary's exposure parameter.
Consider a boundary value generally adopting in prior art from the value range of exposure parameter toAnother boundary value convergence adjustment process, and this process probably causes target convergency value with initialExposure parameter gap is larger, causes exposure convergence process longer. Therefore, this programme is in response to useFamily to the start operation of camera after, the non-border exposure parameter in choosing scope as at the beginning ofThe exposure parameter beginning. These non-border exposure parameters can be that those skilled in the art are studying for a long period of timeThe empirical value of accumulation when starting-up image exposure, these empirical values and target exposure convergency value are several very greatlyMore approaching in rate.
S120, adopt non-border exposure parameter as initial exposure parameter to when start image expose to the sunLight convergence process, until exposure convergence process finishes.
Using the non-border exposure parameter of choosing as initial exposure parameter to when start image exposeConvergence process. So-called exposure convergence process is, according to the photometry result of the two field picture gathering to exposing to the sunThe value of optical parameter is adjusted, and meets predetermined requirement until image shows, exposure convergence process is just tiedBundle.
The method for the imaged exposure convergence of camera start time control that the present embodiment provides, due to profitWith the exposure parameter values on non-border as initial exposure parameter. And the exposure on these non-borders ginsengNumerical value can be the experience that makes the convergence of start-up picture energy instantaneous exposure that those skilled in the art sum upValue, therefore on very large probability its difference that restrains parameter value with target exposure compared with border exposure parameterValue is less with the difference of target exposure convergence parameter value, thereby the exposure of starting-up image was restrainedJourney is faster, improves user's operating experience.
Embodiment bis-
Fig. 2 be the method for the imaged exposure convergence of camera start time control provided by the invention anotherThe method flow diagram of individual embodiment. Can be considered supplementing and refinement method embodiment illustrated in fig. 1.As shown in Figure 2, this method that is used for the imaged exposure convergence of camera start time control comprises the steps:
S210, the start operation in response to user to camera, searches in camera whether store oneThe exposure parameter adopting when inferior camera start.
S220, the exposure parameter adopting in the time that the last camera finding is started shooting is non-as what chooseBorder exposure parameter. S220 can be considered the concrete refinement of aforementioned S110. Or, after S210,If do not find in camera and store the exposure parameter adopting when last camera is started shooting, carry out:
S230, using the exposure parameter under default indoor environment as the described non-border exposure of choosingParameter.
In actual living scene, user uses the environment of camera to vary, personalized factorStronger. Therefore the present embodiment has also carried out personalization and has chosen in the time choosing initial exposure parameter. ConsiderUnder particular light ray environment, open the camera video recording of taking pictures to user habit, this programme by user at every turnWhile closing camera, upgrade the initial exposure parameter of preserving when inferior. Meanwhile, consider that user is through the chamber of being everlastingInside open the camera video recording of taking pictures, and indoor light luminance is also substantially constant at a certain specific exposureParameter area, therefore, this programme has also been preset the exposure parameter under indoor environment in camera.
Interchangeable, when non-border exposure parameter in choosing scope, also can carry out:
S240, the start operation in response to user to camera, is arranged in choosing scopeBetween the exposure parameter of position as the described non-border exposure parameter of choosing.
Particularly, as those skilled in the art's empirical value, can choosing scope metaIn the exposure parameter in centre position as the non-border exposure parameter of choosing. Reason is to be positioned at parameterFor arbitrary value in exposure parameter scope, as target, exposure restrains the exposure parameter in scope centre positionValue, is all the shortest from the exposure convergence duration of its correspondence of average probability, is applicable to camera and opensThe situation that the lightness environment opening is evenly distributed.
Choosing by aforementioned either type after the exposure parameter of non-border, carrying out:
S250, adopt non-border exposure parameter as initial exposure parameter to when start image expose to the sunLight convergence process, until exposure convergence process finishes. S250 is identical with front fast S120 content.
After exposure convergence process finishes, this final exposure parameter adopting can be preserved,In a next camera start process, use as initial exposure parameter values.
The method for the imaged exposure convergence of camera start time control that the embodiment of the present invention provides,On the basis of embodiment of the method shown in Fig. 1, the further intermediate parameters in choosing scopeValue, the parameter value that prestores are (under the exposure parameter adopting when the start of last camera and indoor environmentExposure parameter) as the initial exposure parameter of finally choosing, complete the mistake of camera start exposure convergenceJourney. So, exposure convergence time that can more effective shortening starting-up image.
Embodiment tri-
Be illustrated in figure 3 the dress for the imaged exposure convergence of camera start time control provided by the inventionPut the structural representation of an embodiment, can be used for carrying out the method step of embodiment as shown in Figure 1.As shown in Figure 3, this device comprises:
Parameter is chosen module 310, for the start operation to camera in response to user, chooses exposureNon-border exposure parameter in parameter area; Exposure-processed module 320, for adopting non-border to expose to the sunOptical parameter as initial exposure parameter to when start image convergence process of exposing, until exposure is receivedThe process of holding back finishes.
On this basis, as shown in Figure 4, above-mentioned parameter is chosen module 310 can be specifically for choosingIn exposure parameter scope, be positioned at the exposure parameter in centre position as the described non-border exposure ginseng of choosingNumber.
Alternatively, the above-mentioned device for the imaged exposure convergence of camera start time control also can comprise:Parameter is searched module 330, for the start of camera being operated in response to user, searching in camera isThe no exposure parameter adopting when last camera is started shooting that stores.
On this basis, parameter is chosen module 310 and specifically also be can be used for parameter to search module 330The exposure parameter that the last camera finding adopts while start is as the non-border exposure ginseng of choosingNumber, or, search in parameter the exposure adopting when module 330 does not find once camera startParameter, parameter is chosen module 310, and the exposure parameter under default indoor environment is non-as what chooseBorder exposure parameter.
Further, the above-mentioned device for the imaged exposure convergence of camera start time control also can wrapDraw together: parameter is preserved module 340, after finishing in exposure convergence process, preserve this and finally adoptWith exposure parameter in camera.
The device for the imaged exposure convergence of camera start time control of the embodiment of the present invention, in utilizationThe exposure parameter values on non-border as initial exposure parameter. And the exposure parameter on these non-bordersValue can be the experience that makes the convergence of start-up picture energy instantaneous exposure that those skilled in the art sum upValue, therefore on very large probability its difference that restrains parameter value with target exposure compared with border exposure parameterValue is less with the difference of target exposure convergence parameter value, thereby the exposure of starting-up image was restrainedJourney is faster, improves user's operating experience.
Further, by the intermediate parameters value in exposure parameter scope, the parameter value (upper that prestoresExposure parameter under exposure parameter and the indoor environment adopting when inferior camera start) as finally choosingInitial exposure parameter, complete the process of camera start exposure convergence. So, can more effectively contractThe exposure convergence time of short starting-up image.
The above be only the specific embodiment of the present invention, but protection scope of the present invention alsoBe not limited to this, any be familiar with those skilled in the art the present invention disclose technology modelIn enclosing, can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (10)
1. for a method for the imaged exposure convergence of camera start time control, it is characterized in that instituteThe method of stating comprises:
Start operation in response to user to camera, the non-border exposure in choosing scopeParameter;
Adopt described non-border exposure parameter as initial exposure parameter to when start image exposeConvergence process, until exposure convergence process finishes.
2. method according to claim 1, is characterized in that, described in response to user to phaseThe start operation of machine, the non-border exposure parameter in choosing scope comprises:
Choose the exposure parameter that is positioned at centre position in described exposure parameter scope as described in choosingNon-border exposure parameter.
3. method according to claim 1, is characterized in that, described method also comprises:
Start operation in response to user to camera, searches in camera, whether to store last cameraThe exposure parameter adopting when start:
Non-border exposure parameter in described choosing scope comprises: by find upper oneThe exposure parameter adopting when inferior camera start is as the described non-border exposure parameter of choosing.
4. method according to claim 3, is characterized in that, described method also comprises:
If the exposure parameter adopting while not finding last camera start, by default indoor ringExposure parameter under border is as the described non-border exposure parameter of choosing.
5. according to the method described in claim 1-4 any one, it is characterized in that, described method alsoComprise:
After described exposure convergence process finishes, preserve this last exposure parameter adopting in cameraIn.
6. for a device for the imaged exposure convergence of camera start time control, it is characterized in that instituteThe method of stating comprises:
Parameter is chosen module, for the start operation to camera in response to user, choosingNon-border exposure parameter in scope;
Exposure-processed module, for adopting described non-border exposure parameter as initial exposure parameter pairThe image convergence process of exposing when start, until exposure convergence process finishes.
7. device according to claim 6, is characterized in that, described parameter is chosen module toolBody is for choosing exposure parameter that described exposure parameter scope is positioned at centre position as the institute choosingState non-border exposure parameter.
8. device according to claim 6, is characterized in that, described device also comprises:
Parameter is searched module, for the start of camera being operated in response to user, searching in camera isThe no exposure parameter adopting when last camera is started shooting that stores:
It is concrete also for described parameter is searched to the last time that module searches arrives that described parameter is chosen moduleThe exposure parameter adopting when camera start is as the described non-border exposure parameter of choosing.
9. device according to claim 8, is characterized in that, described parameter is chosen module toolBody also for, if described parameter is searched the exposure adopting when module does not find the start of last cameraParameter, using the exposure parameter under default indoor environment as the described non-border exposure ginseng of choosingNumber.
10. according to the device described in claim 6-9 any one, it is characterized in that described deviceComprise well:
Parameter is preserved module, after finishing in described exposure convergence process, preserves this and finally adoptsWith exposure parameter in camera.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510758290.0A CN105657245A (en) | 2015-11-08 | 2015-11-08 | Method and apparatus for controlling image exposure convergence in camera starting |
| PCT/CN2016/089038 WO2017076047A1 (en) | 2015-11-08 | 2016-07-07 | Method and apparatus for controlling image exposure convergence in camera starting |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510758290.0A CN105657245A (en) | 2015-11-08 | 2015-11-08 | Method and apparatus for controlling image exposure convergence in camera starting |
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| CN105657245A true CN105657245A (en) | 2016-06-08 |
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| CN201510758290.0A Pending CN105657245A (en) | 2015-11-08 | 2015-11-08 | Method and apparatus for controlling image exposure convergence in camera starting |
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| CN (1) | CN105657245A (en) |
| WO (1) | WO2017076047A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017076047A1 (en) * | 2015-11-08 | 2017-05-11 | 乐视控股（北京）有限公司 | Method and apparatus for controlling image exposure convergence in camera starting |
| CN109361866A (en) * | 2018-11-21 | 2019-02-19 | 豪威科技(上海)有限公司 | A kind of automatic exposure control method and system |
| CN113011227A (en) * | 2019-12-19 | 2021-06-22 | 合肥君正科技有限公司 | Auxiliary detection method for avoiding false alarm during background update pre-judgment period in occlusion detection |
| CN117560576A (en) * | 2023-11-13 | 2024-02-13 | 四川新视创伟超高清科技有限公司 | Exposure method and exposure system for focal plane area |
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| CN105657245A (en) * | 2015-11-08 | 2016-06-08 | 乐视移动智能信息技术（北京）有限公司 | Method and apparatus for controlling image exposure convergence in camera starting |
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| CN1504823A (en) * | 2002-12-05 | 2004-06-16 | ӡ�����Ƽ��ɷ�����˾ | Rapid convergence method for correct exposure value |
| CN1525228A (en) * | 2003-02-24 | 2004-09-01 | ��嫿Ƽ��ɷ�����˾ | Apparatus and method automatically amending exposure condition of digital video device |
| US20060182430A1 (en) * | 2005-02-15 | 2006-08-17 | Stavely Donald J | Camera exposure program coupled to image stabilization capability |
| CN102369723A (en) * | 2011-08-29 | 2012-03-07 | 华为终端有限公司 | Auto exposure method and device, and imaging device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017076047A1 (en) * | 2015-11-08 | 2017-05-11 | 乐视控股（北京）有限公司 | Method and apparatus for controlling image exposure convergence in camera starting |
| CN109361866A (en) * | 2018-11-21 | 2019-02-19 | 豪威科技(上海)有限公司 | A kind of automatic exposure control method and system |
| CN109361866B (en) * | 2018-11-21 | 2021-03-02 | 豪威科技(上海)有限公司 | Automatic exposure control method and system |
| CN113011227A (en) * | 2019-12-19 | 2021-06-22 | 合肥君正科技有限公司 | Auxiliary detection method for avoiding false alarm during background update pre-judgment period in occlusion detection |
| CN113011227B (en) * | 2019-12-19 | 2024-01-26 | 合肥君正科技有限公司 | Auxiliary detection method for avoiding false alarm during background updating pre-judgment in shielding detection |
| CN117560576A (en) * | 2023-11-13 | 2024-02-13 | 四川新视创伟超高清科技有限公司 | Exposure method and exposure system for focal plane area |
| CN117560576B (en) * | 2023-11-13 | 2024-05-07 | 四川新视创伟超高清科技有限公司 | Exposure method and exposure system for focal plane area |
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| Publication number | Publication date |
|---|---|
| WO2017076047A1 (en) | 2017-05-11 |
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