CN105611158A - Automatic focus following method and device and user equipment - Google Patents
Automatic focus following method and device and user equipment Download PDFInfo
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- CN105611158A CN105611158A CN201510981854.7A CN201510981854A CN105611158A CN 105611158 A CN105611158 A CN 105611158A CN 201510981854 A CN201510981854 A CN 201510981854A CN 105611158 A CN105611158 A CN 105611158A
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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
- H04N23/67—Focus control based on electronic image sensor signals
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Abstract
The invention discloses an automatic focus following method and device and a piece of user equipment; wherein the method comprises following steps of focusing according to the captured image of an object focusing area; obtaining the definition and the brightness of the image after the optimum focusing point is adjusted; photographing by taking the definition and the brightness as standard parameters; in a photographing process, detecting whether the definition and the brightness of the image change or not compared with the standard parameters; and if the definition and the brightness change, adjusting the focal length according to different change trends.
Description
Technical field
The invention belongs to photoelectron technology field, specifically, relate to a kind of automatically with burnt method and apparatus,Subscriber equipment.
Background technology
Along with the development of electronic technology, the smart machine with camera camera function more and more shouldBe used in people's life, these smart machines with camera camera function must be focused and be waited to takeOn object to obtain good photographic quality. But these smart machines are not equipped with burnt device. ExistingHave in technology and also have some mechanical cameras with burnt device, but mechanism is large, cost is high.
Therefore, how realizing the automatic of smart machine is letter problem to be solved with Jiao.
Summary of the invention
In view of this, the application provides a kind of automatically with burnt method and apparatus, subscriber equipment, Neng GoushiExisting smart machine is burnt to automatically following of object to be shot.
It is a kind of automatically with burnt method that the embodiment of the present invention provides, and comprising:
Image according to the target focusing area catching is focused, and obtains and is adjusting to best focusingThe definition of rear described image and brightness is as canonical parameter, and shoots with video-corder;
In the process of shooting with video-corder, the definition and the brightness that detect described image are compared with described canonical parameterNot no changing, if there is variation, adjusts according to different variation tendency focusings.
Wherein, adjust according to different variation tendency focusings, further comprise:
Detect the definition of described image and brightness respectively with described canonical parameter in definition and brightDegree is compared, and variation has all occurred, and focusing is adjusted.
Wherein, focusing is adjusted, and further comprises:
Detect the definition of described image and brightness respectively with described canonical parameter in definitionCompare with brightness while all having there is variation, in default duration, catch tail two field picture;
The image of comparing between the two field picture that described tail two field picture and the eve that changes shoot with video-corder becomesChange, if image change degree is less than a threshold value, do not carry out Focussing; If described image change journeyDegree is more than or equal to a threshold value, re-starts focusing according to the image of the target focusing area again catching, andShoot with video-corder.
Wherein, described default duration is set to be not less than an object and crosses described target focusing to estimate speedThe needed time of region.
Wherein, re-start focusing according to described image, also comprise:
Obtain and readjusting the definition of described image after best focusing and brightness as newCanonical parameter.
Wherein, adjust according to different variation tendency focusings, further comprise:
Detect that the definition of described image, compared with definition in described canonical parameter, variation has occurred,The brightness of described image does not change compared with brightness in described canonical parameter, does not carry out focal length tuneWhole;
Detect that the definition of described image does not change compared with definition in described canonical parameter,There is variation in the brightness of described image, do not carry out focal length tune compared with brightness in described canonical parameterWhole.
Wherein, detect the definition of described image and brightness respectively with described canonical parameter in definitionCompare with brightness, all do not change, do not carry out Focussing.
It is a kind of automatically with coke installation that the embodiment of the present invention also provides, and comprising:
Acquisition module, focuses for the image according to the target focusing area catching, and obtains and is adjustingThe whole definition to described image after best focusing and brightness is as canonical parameter, and shoots with video-corder;
With burnt module, in the process of shooting with video-corder, detect the definition of described image and brightness and described inWhether canonical parameter has been compared changes, if there is variation, according to different variation tendency focusingsApart from adjusting.
Wherein, described with burnt module specifically for:
Detect the definition of described image and brightness respectively with described canonical parameter in definition and brightDegree is compared, and variation has all occurred, and focusing is adjusted.
Wherein, described with burnt module specifically for:
Detect the definition of described image and brightness respectively with described canonical parameter in definitionCompare with brightness while all having there is variation, in default duration, catch tail two field picture;
The image of comparing between the two field picture that described tail two field picture and the eve that changes shoot with video-corder becomesChange, if image change degree is less than a threshold value, do not carry out Focussing; If described image change journeyDegree is more than or equal to a threshold value, re-starts focusing according to the image of the target focusing area again catching, andShoot with video-corder.
Wherein, described default duration is set to be not less than an object and crosses described target focusing to estimate speedThe needed time of region.
Wherein, described acquisition module also for:
Obtain and readjusting the definition of described image after best focusing and brightness as newCanonical parameter.
Wherein, described with burnt module specifically also for:
Detect that the definition of described image, compared with definition in described canonical parameter, variation has occurred,The brightness of described image does not change compared with brightness in described canonical parameter, does not carry out focal length tuneWhole;
Detect that the definition of described image does not change compared with definition in described canonical parameter,There is variation in the brightness of described image, do not carry out focal length tune compared with brightness in described canonical parameterWhole.
Wherein, described with burnt module specifically also for:
Detect the definition of described image and brightness respectively with described canonical parameter in definition and brightDegree is compared, and does not all change, and does not carry out Focussing.
The embodiment of the present invention also provides a kind of subscriber equipment, comprising: described above automatically with coke installation.
The embodiment of the present invention is focused according to the image of the target focusing area catching, and obtains and is adjusting, and shoot with video-corder as canonical parameter to the definition of described image after best focusing and brightness; ?Shoot with video-corder in process, detect the definition of described image and brightness compared with described canonical parameter whether send outChanging, if there is variation, adjusts according to different variation tendency focusings; Can realizeSmart machine carries out autozoom according to the variation of the definition of object to be shot and brightness.
Brief description of the drawings
Accompanying drawing described herein is used to provide further understanding of the present application, forms of the applicationPoint, the application's schematic description and description is used for explaining the application, does not form the application'sImproper restriction. In the accompanying drawings:
Fig. 1 is a kind of schematic flow sheet of automatically following burnt method that the embodiment of the present application provides;
Fig. 2 is a kind of structural representation of automatically following coke installation that the embodiment of the present application provides.
Detailed description of the invention
Below will coordinate drawings and Examples to describe embodiments of the present invention in detail, by this to the present inventionThe implementation procedure how application technology means solve technical problem and reach technology effect can fully understandAnd implement according to this.
In a typical configuration, computing equipment comprise one or more processors (CPU), input/Output interface, network interface and internal memory.
Internal memory may comprise the volatile memory in computer-readable medium, random access memory(RAM) and/or the form such as Nonvolatile memory, as read-only storage (ROM) or flash memory (flashRAM).Internal memory is the example of computer-readable medium.
Computer-readable medium comprises that permanent and impermanency, removable and non-removable media can be byAny method or technology realize information storage. Information can be computer-readable instruction, data structure,The module of program or other data. The example of the storage medium of computer includes, but are not limited to phase transition internal memory(PRAM), static RAM (SRAM), dynamic random access memory (DRAM), otherRandom access memory (RAM), the read-only storage (ROM) of type, electrically erasable is read-only depositsReservoir (EEPROM), fast flash memory bank or other memory techniques, read-only optical disc read-only storage(CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette tape, tape magneticDisk storage or other magnetic storage apparatus or any other non-transmission medium, can be used for storage can be countedCalculate the information of device access. According to defining herein, computer-readable medium does not comprise non-temporary computerReadable media (transitorymedia), as data-signal and the carrier wave of modulation.
Censure specific components as called some vocabulary in the middle of description and claim. This area skillArt personnel should understand, and hardware manufacturer may be called same assembly with different nouns. This explanationBook and claim are not used as distinguishing the mode of assembly with the difference of title, but with assembly in functionOn difference be used as distinguish criterion. As mentioned " bag in the middle of in description and claim in the whole textContaining " be an open language, therefore should be construed to " comprise but be not limited to ". " roughly " refer to canIn the error range receiving, those skilled in the art can solve described technology and ask within the scope of certain errorTopic, reaches described technique effect substantially. In addition, " coupling " word comprises any direct and indirect at thisElectric property coupling means. Therefore, be coupled to one second device, representative if describe a first device in literary compositionDescribed first device can directly be electrically coupled to described the second device, or by other devices or couple meansIndirectly be electrically coupled to described the second device. Description subsequent descriptions is for implementing better enforcement of the present inventionMode, right described description is to illustrate that rule of the present invention is object, not in order to limit the present inventionScope. Protection scope of the present invention is when being as the criterion depending on the claims person of defining.
Also it should be noted that, term " comprises ", " comprising " or its any other variant are intended to containComprising of lid nonexcludability, thus make to comprise that the commodity of a series of key elements or system not only comprise thoseKey element, but also comprise other key elements of clearly not listing, or be also included as this commodity orThe key element that system is intrinsic. In the situation that there is no more restrictions, limit by statement " comprising ... "Fixed key element, and be not precluded within and comprise and in the commodity of described key element or system, also have other identical wantingElement.
Fig. 1 is a kind of schematic flow sheet of automatically following burnt method that the embodiment of the present application provides; As Fig. 1 instituteShow, comprising:
101, focus according to the image of the target focusing area catching;
For example, the operation of the current picture of user to display screen demonstration detected, determine the order that user selectsMark focusing area; In the zonule of the capable N row of a M pixel of described target focusing area central authorities' selection, doFor the focusing window of described target focusing area, wherein, the integer power that M and N are 2, M is greater than etc.Be less than or equal to 256 in 32, N.
Wherein, the reason of the focusing window of select target focusing area: because focusing evaluation function carries outComputing is directly proportional to the pixel of image substantially, in order to reach the requirement of real-time, must reduce and participate in fortuneThe quantity of the pixel of calculating; If entire image is used to focusing evaluation function, unessential part in image(as background) can produce negative impact to evaluation result, causes pith (the imaging argument in imageMark) cannot accurately focus.
The selection of focusing window comprises central back-and-forth method and multizone back-and-forth method, also has in addition golden section pointFocusing window and the focusing window based on skin detection etc., the present invention does not limit.
In the embodiment of the present invention, can also utilize the curve of rapid focus reference function, search rapid focusThe peak value of the curve of reference function, and by true the focusing corresponding peak of curve of rapid focus reference functionBe decided to be the best focusing of described target focusing area.
102, obtain and adjusting to the definition of described image after best focusing and brightness as standardParameter, and shoot with video-corder;
Getting after the best focusing of object to be shot, captured image is definition, brightnessAlso be best, now, can will adjusting to the definition of described image after best focusing and brightDegree is set to canonical parameter.
103,, in the process of shooting with video-corder, detect definition and brightness and the described canonical parameter of described imageWhether compare and changed;
For example, when the object to be shot in target focusing area moves, but there is it before camera lensWhen his object, the definition of object to be shot image and brightness meeting change; Or
Before and after object to be shot in target focusing area or moved left and right, now, object to be shotThe definition of image and brightness meeting change.
If 104 variation has occurred, adjust according to different variation tendency focusings.
Wherein, in a kind of optional embodiment, adjust according to different variation tendency focusings,Further comprise:
Detect the definition of described image and brightness respectively with described canonical parameter in definition and brightDegree is compared, and variation has all occurred, and focusing is adjusted.
Wherein, focusing is adjusted, and further comprises:
Detect the definition of described image and brightness respectively with described canonical parameter in definitionCompare with brightness while all having there is variation, in default duration, catch tail two field picture;
The image of comparing between the two field picture that described tail two field picture and the eve that changes shoot with video-corder becomesChange, if image change degree is less than a threshold value, do not carry out Focussing; If described image change journeyDegree is more than or equal to a threshold value, re-starts focusing according to the image of the target focusing area again catching, andShoot with video-corder.
Wherein, above-mentioned default duration is set to be not less than an object and crosses described target focusing to estimate speedThe needed time of region.
Wherein, in a kind of optional embodiment, re-start focusing according to described image, can also wrapDraw together:
By default step-length successively moving lens to a two out of focus position, and respectively according to two out of focus positionsThe image of the target focusing area catching, obtains two out of focus positions in conjunction with rapid focus reference functionDefinition reference value;
According to the distance between the definition reference value of two out of focus positions and two out of focus positions, identify twoThe variable gradient of the definition reference value between out of focus position;
In the time that described variable gradient is less than a threshold value, taking the second step-length as described default step-length moving lens,In the time that described variable gradient is greater than a threshold value, taking the first step-length as described default step-length moving lens, whereinDescribed the second step-length is significantly greater than described the first step-length;
During taking described the first step-length as default step-length continuous moving camera lens to some focusing positions, basis respectivelyThe image of the target focusing area catching at described some focusing positions, obtains in conjunction with focusing evaluation functionObtain described some right in the definition of described some focusing positions or in conjunction with rapid focus reference functionThe definition reference value of burnt position is best right by the focusing position of definition or definition reference value maximumFocus.
Wherein, after re-starting focusing according to described image, also comprise:
Obtain and readjusting the definition of described image after best focusing and brightness as newCanonical parameter.
In a kind of optional embodiment, said method also comprises:
Detect that the definition of described image, compared with definition in described canonical parameter, variation has occurred,The brightness of described image does not change compared with brightness in described canonical parameter, does not carry out focal length tuneWhole; For example, when object to be shot moves left and right, may there is variation in the definition of image, but brightDegree does not but change, now can be without zoom; Or
Detect that the definition of described image does not change compared with definition in described canonical parameter,There is variation in the brightness of described image, do not carry out focal length tune compared with brightness in described canonical parameterWhole; For example, object to be shot does not move, but has occurred suddenly other objects above, now, and figureThere is not variation in the definition of picture, but brightness but may change, now can be without zoom;Or
Detect the definition of described image and brightness respectively with described canonical parameter in definition and brightDegree is compared, and does not all change, and for example, object to be shot does not move, now, and the definition of imageAnd brightness all do not change, can not carry out Focussing.
The embodiment of the present invention is focused according to the image of the target focusing area catching, and obtains and is adjusting, and shoot with video-corder as canonical parameter to the definition of described image after best focusing and brightness; ?Shoot with video-corder in process, detect the definition of described image and brightness compared with described canonical parameter whether send outChanging, if there is variation, adjusts according to different variation tendency focusings; Can realizeSmart machine carries out autozoom according to the variation of the definition of object to be shot and brightness.
Fig. 2 is a kind of structural representation of automatically following coke installation that the embodiment of the present application provides; As Fig. 2 instituteShow, comprising:
Acquisition module 21, focuses for the image according to the target focusing area catching, and obtainsAdjusting to the definition of described image after best focusing and brightness as canonical parameter, and taking the photographRecord;
With burnt module 22, in the process of shooting with video-corder, detect the definition of described image and brightness andWhether described canonical parameter has been compared and has been changed, if there is variation, according to different variation tendenciesFocusing is adjusted.
Wherein, described with burnt module 22 specifically for:
Detect the definition of described image and brightness respectively with described canonical parameter in definition and brightDegree is compared, and variation has all occurred, and focusing is adjusted.
Described with burnt module 22 specifically for:
Detect the definition of described image and brightness respectively with described canonical parameter in definitionCompare with brightness while all having there is variation, in default duration, catch tail two field picture;
The image of comparing between the two field picture that described tail two field picture and the eve that changes shoot with video-corder becomesChange, if image change degree is less than a threshold value, do not carry out Focussing; If described image change journeyDegree is more than or equal to a threshold value, re-starts focusing according to the image of the target focusing area again catching, andShoot with video-corder.
Wherein, described default duration is set to be not less than an object and crosses described target focusing to estimate speedThe needed time of region.
Wherein, described acquisition module 21 also for:
Obtain and readjusting the definition of described image after best focusing and brightness as newCanonical parameter.
Wherein, described with burnt module 22 specifically also for:
Detect that the definition of described image, compared with definition in described canonical parameter, variation has occurred,The brightness of described image does not change compared with brightness in described canonical parameter, does not carry out focal length tuneWhole;
Detect that the definition of described image does not change compared with definition in described canonical parameter,There is variation in the brightness of described image, do not carry out focal length tune compared with brightness in described canonical parameterWhole.
Described with burnt module 22 specifically also for:
Detect the definition of described image and brightness respectively with described canonical parameter in definition and brightDegree is compared, and does not all change, and does not carry out Focussing.
Fig. 2 shown device can carry out as shown in Figure 1 automatically with burnt method, it realizes principle and technologyEffect repeats no more.
The embodiment of the present invention provides a kind of subscriber equipment (as video camera), comprising: as shown in Figure 2 fromMoving with coke installation.
1a, a kind of automatically with burnt method, comprising:
Image according to the target focusing area catching is focused, and obtains and is adjusting to best focusingThe definition of rear described image and brightness is as canonical parameter, and shoots with video-corder;
In the process of shooting with video-corder, the definition and the brightness that detect described image are compared with described canonical parameterNot no changing, if there is variation, adjusts according to different variation tendency focusings.
2a, as described in 1a automatically with burnt method, adjust according to different variation tendency focusings,Further comprise:
Detect the definition of described image and brightness respectively with described canonical parameter in definition and brightDegree is compared, and variation has all occurred, and focusing is adjusted.
3a, as described in 2a automatically with burnt method, focusing is adjusted, and further comprises:
Detect the definition of described image and brightness respectively with described canonical parameter in definitionCompare with brightness while all having there is variation, in default duration, catch tail two field picture;
The image of comparing between the two field picture that described tail two field picture and the eve that changes shoot with video-corder becomesChange, if image change degree is less than a threshold value, do not carry out Focussing; If described image change journeyDegree is more than or equal to a threshold value, re-starts focusing according to the image of the target focusing area again catching, andShoot with video-corder.
4a, as described in 3a automatically with burnt method:
Described default duration is set to be not less than an object and crosses described target focusing area to estimate speedThe needed time.
5a, as described in 3a automatically with burnt method, re-start focusing according to described image, also comprise:
Obtain and readjusting the definition of described image after best focusing and brightness as newCanonical parameter.
6a, as described in 1a automatically with burnt method, adjust according to different variation tendency focusings,Further comprise:
Detect that the definition of described image, compared with definition in described canonical parameter, variation has occurred,The brightness of described image does not change compared with brightness in described canonical parameter, does not carry out focal length tuneWhole;
Detect that the definition of described image does not change compared with definition in described canonical parameter,There is variation in the brightness of described image, do not carry out focal length tune compared with brightness in described canonical parameterWhole.
7a, as described in 1a automatically with burnt method, also comprise:
Detect the definition of described image and brightness respectively with described canonical parameter in definition and brightDegree is compared, and does not all change, and does not carry out Focussing.
8b, a kind of automatically with coke installation, comprising:
Acquisition module, focuses for the image according to the target focusing area catching, and obtains and is adjustingThe whole definition to described image after best focusing and brightness is as canonical parameter, and shoots with video-corder;
With burnt module, in the process of shooting with video-corder, detect the definition of described image and brightness and described inWhether canonical parameter has been compared changes, if there is variation, according to different variation tendency focusingsApart from adjusting.
9b, as described in 8b automatically with coke installation, described with burnt module specifically for:
Detect the definition of described image and brightness respectively with described canonical parameter in definition and brightDegree is compared, and variation has all occurred, and focusing is adjusted.
10b, as described in 9b automatically with coke installation, described with burnt module specifically for:
Detect the definition of described image and brightness respectively with described canonical parameter in definitionCompare with brightness while all having there is variation, in default duration, catch tail two field picture;
The image of comparing between the two field picture that described tail two field picture and the eve that changes shoot with video-corder becomesChange, if image change degree is less than a threshold value, do not carry out Focussing; If described image change journeyDegree is more than or equal to a threshold value, re-starts focusing according to the image of the target focusing area again catching, andShoot with video-corder.
11b, as described in 10b automatically with coke installation:
Described default duration is set to be not less than an object and crosses described target focusing area to estimate speedThe needed time.
12b, as described in 10b automatically with coke installation, described acquisition module also for:
Obtain and readjusting the definition of described image after best focusing and brightness as newCanonical parameter.
13b, as described in 8b automatically with coke installation, described with burnt module specifically also for:
Detect that the definition of described image, compared with definition in described canonical parameter, variation has occurred,The brightness of described image does not change compared with brightness in described canonical parameter, does not carry out focal length tuneWhole;
Detect that the definition of described image does not change compared with definition in described canonical parameter,There is variation in the brightness of described image, do not carry out focal length tune compared with brightness in described canonical parameterWhole.
14b, as described in 8b automatically with coke installation, described with burnt module specifically also for:
Detect the definition of described image and brightness respectively with described canonical parameter in definition and brightDegree is compared, and does not all change, and does not carry out Focussing.
15c, a kind of subscriber equipment, comprising: the device as described in any one in 8b-14b.
Above-mentioned explanation illustrates and has described some preferred embodiments of the present invention, but as previously mentioned, should manageSeparate the present invention and be not limited to disclosed form herein, should not regard the eliminating to other embodiment as,And can be used for various other combinations, amendment and environment, and can be in invention contemplated scope described herein,Technology or knowledge by above-mentioned instruction or association area are changed. Change and those skilled in the art carry outMoving and variation does not depart from the spirit and scope of the present invention, all should be in the protection of claims of the present inventionIn scope.
Claims (10)
1. automatically with a burnt method, it is characterized in that, comprising:
Image according to the target focusing area catching is focused, and obtains and is adjusting to best focusingThe definition of rear described image and brightness is as canonical parameter, and shoots with video-corder;
In the process of shooting with video-corder, the definition and the brightness that detect described image are compared with described canonical parameterNot no changing, if there is variation, adjusts according to different variation tendency focusings.
2. the automatic burnt method of following as claimed in claim 1, is characterized in that, according to different variationsTrend focusing is adjusted, and further comprises:
Detect the definition of described image and brightness respectively with described canonical parameter in definition and brightDegree is compared, and variation has all occurred, and focusing is adjusted.
3. the automatic burnt method of following as claimed in claim 2, is characterized in that, focusing is adjusted,Further comprise:
Detect the definition of described image and brightness respectively with described canonical parameter in definitionCompare with brightness while all having there is variation, in default duration, catch tail two field picture;
The image of comparing between the two field picture that described tail two field picture and the eve that changes shoot with video-corder becomesChange, if image change degree is less than a threshold value, do not carry out Focussing; If described image change journeyDegree is more than or equal to a threshold value, re-starts focusing according to the image of the target focusing area again catching, andShoot with video-corder.
4. as claimed in claim 3 automatically with burnt method, it is characterized in that:
Described default duration is set to be not less than an object and crosses described target focusing area to estimate speedThe needed time.
5. the automatic burnt method of following as claimed in claim 3, is characterized in that, according to described image weightNewly focus, also comprise:
Obtain and readjusting the definition of described image after best focusing and brightness as newCanonical parameter.
6. the automatic burnt method of following as claimed in claim 1, is characterized in that, according to different variationsTrend focusing is adjusted, and further comprises:
Detect that the definition of described image, compared with definition in described canonical parameter, variation has occurred,The brightness of described image does not change compared with brightness in described canonical parameter, does not carry out focal length tuneWhole;
Detect that the definition of described image does not change compared with definition in described canonical parameter,There is variation in the brightness of described image, do not carry out focal length tune compared with brightness in described canonical parameterWhole.
7. the automatic burnt method of following as claimed in claim 1, is characterized in that,
Detect the definition of described image and brightness respectively with described canonical parameter in definition and brightDegree is compared, and does not all change, and does not carry out Focussing.
8. automatically with a coke installation, it is characterized in that, comprising:
Acquisition module, focuses for the image according to the target focusing area catching, and obtains and is adjustingThe whole definition to described image after best focusing and brightness is as canonical parameter, and shoots with video-corder;
With burnt module, in the process of shooting with video-corder, detect the definition of described image and brightness and described inWhether canonical parameter has been compared changes, if there is variation, according to different variation tendency focusingsApart from adjusting.
9. the coke installation of automatically following as claimed in claim 8, is characterized in that, described with burnt module toolBody is used for:
Detect the definition of described image and brightness respectively with described canonical parameter in definition and brightDegree is compared, and variation has all occurred, and focusing is adjusted.
10. the coke installation of automatically following as claimed in claim 9, is characterized in that, described with burnt module toolBody is used for:
Detect the definition of described image and brightness respectively with described canonical parameter in definitionCompare with brightness while all having there is variation, in default duration, catch tail two field picture;
The image of comparing between the two field picture that described tail two field picture and the eve that changes shoot with video-corder becomesChange, if image change degree is less than a threshold value, do not carry out Focussing; If described image change journeyDegree is more than or equal to a threshold value, re-starts focusing according to the image of the target focusing area again catching, andShoot with video-corder.
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| CN108769538A (en) * | 2018-08-16 | 2018-11-06 | Oppo广东移动通信有限公司 | Atomatic focusing method, device, storage medium and terminal |
| CN109040593A (en) * | 2018-08-23 | 2018-12-18 | 惠州Tcl移动通信有限公司 | A kind of focusing method of taking pictures, terminal and storage medium based on dynamic environment |
| CN110324536A (en) * | 2019-08-19 | 2019-10-11 | 杭州图谱光电科技有限公司 | A kind of image change automatic sensing focusing method for micro- camera |
| CN112004019A (en) * | 2019-05-27 | 2020-11-27 | 福建天晴数码有限公司 | Tracking focusing method and computer readable storage medium |
| CN112235503A (en) * | 2019-07-15 | 2021-01-15 | 北京字节跳动网络技术有限公司 | Focusing test method and device, computer equipment and storage medium |
| CN112585941A (en) * | 2019-12-30 | 2021-03-30 | 深圳市大疆创新科技有限公司 | Focusing method and device, shooting equipment, movable platform and storage medium |
| CN117354627A (en) * | 2023-09-22 | 2024-01-05 | 广州磐碟塔信息科技有限公司 | Automatic focus following method and system for virtual scene |
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| CN109040593B (en) * | 2018-08-23 | 2020-08-11 | 惠州Tcl移动通信有限公司 | Photographing focusing method based on dynamic environment, terminal and storage medium |
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| CN112235503A (en) * | 2019-07-15 | 2021-01-15 | 北京字节跳动网络技术有限公司 | Focusing test method and device, computer equipment and storage medium |
| CN110324536A (en) * | 2019-08-19 | 2019-10-11 | 杭州图谱光电科技有限公司 | A kind of image change automatic sensing focusing method for micro- camera |
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| CN117354627A (en) * | 2023-09-22 | 2024-01-05 | 广州磐碟塔信息科技有限公司 | Automatic focus following method and system for virtual scene |
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