CN104618654A - Mobile electronic device continuous focusing method and system based on sway detection - Google Patents
Mobile electronic device continuous focusing method and system based on sway detection Download PDFInfo
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Abstract
The invention discloses a mobile electronic device continuous focusing method and system based on sway detection. The method aims at solving the problem of focusing failure caused by the fact that a mobile electronic device is easy to sway during focusing due to light weight. The method includes detecting the sway degree of the mobile electronic device, if the sway degree is larger than or equal to a first sway threshold, judging that the mobile electronic device has common sway, triggering first-level focusing when detecting that the sway degree is lower than the static threshold; if the sway degree is larger than or equal to a second sway threshold, judging that the mobile electronic device has severe sway and triggering the second-level focusing when detecting that the sway degree is lower than the static threshold, wherein the first sway threshold is smaller than the second sway threshold, the static threshold is smaller than the first sway threshold.
Description
Technical field
The present invention relates to the focusing technology field of taking pictures of mobile electronic device.
Background technology
The portability of the mobile electronic device such as mobile phone, flat board is very high, almost can take pictures under any scene, but due to mobile electronic device, especially mobile phone, weight very little, be therefore easy to when taking pictures focus on unsuccessfully and the interface that causes finding a view is fuzzy.On the market current, focus method Manual focusing, automatic focus, the touch screen focusing etc. nothing more than of mobile electronic device.
Wherein Manual focusing refers to that user can input focus parameter, and mobile electronic device focuses on according to this numerical value.Automatic focus refers to that mobile electronic device calculates in shooting picture automatically and the most clearly puts as focus.Touch screen focuses on and refers to that mobile electronic device is that focus focuses on according to the point that user touches on screen.These focus methods are all the focusing functions that existing main flow mobile electronic device has.
But these focus methods are all self-existent, do not contact each other, the focusing booster action played is also very limited.When touch screen focuses on; after user clicks screen; if hand wobble, the focus that touch screen focuses on often can be cancelled by automatic focus; make user in use otherwise stop place screen correction focus; or use procedure must be meticulous; and in Manual focusing process, automatic focus is closed, make so again automatic focus can not play a role completely.
Summary of the invention
Light for mobile electronic device weight, easily shake during focusing and cause focusing on failed problem, the present invention proposes a kind of based on rocking detection focus method, using accelerometer to detect mobile electronic device and whether shaking, and in rational situation, triggering corresponding focusing.
In the present invention based on the mobile electronic device sequential focusing method of rocking detection, specifically comprise:
Detect the shaking degree of mobile electronic device, if shaking degree is more than or equal to first rock threshold value, then judge that common rocking occurs mobile electronic device, focus on if simultaneously current, then cancel this focus movement, and detect shaking degree lower than during static threshold trigger one-level focus on, if shaking degree is more than or equal to second rock threshold value, then judge mobile electronic device occur acutely rock, and detect shaking degree lower than during static threshold trigger secondary focusing; Described first rocks threshold value is less than second and rocks threshold value, and static threshold is less than first and rocks threshold value.
Further, described one-level focuses on and is automatic focus with secondary focusing.
Further, when detecting that the screen of mobile electronic device is touched, triggering touch screen focuses on and preserves touch screen and focuses on the focus obtained; Detect the shaking degree of mobile electronic device simultaneously, if shaking degree is more than or equal to first rock threshold value, then judge that common rocking occurs mobile electronic device, focus on if simultaneously current, then cancel current focus movement, and detect shaking degree lower than during static threshold trigger one-level focus on, if shaking degree is more than or equal to second rock threshold value, then judge mobile electronic device occur acutely rock, and detect shaking degree lower than during static threshold trigger secondary focusing.
Described one-level is focused to and focuses on the focus that obtains for one-level focused spot with described touch screen and re-start focusing; Described secondary focusing is empty described touch screen to focus on the focus obtained, and automatic focus obtains new focus.
Further, the shaking degree of mobile electronic device is detected when Manual focusing, if shaking degree is more than or equal to first rock threshold value, then judge that common rocking occurs mobile electronic device, focus on if simultaneously current, then cancel current focus movement, and detect shaking degree lower than during static threshold trigger one-level focus on, if shaking degree is more than or equal to second rock threshold value, then judge mobile electronic device occur acutely rock, and detect shaking degree lower than during static threshold trigger secondary focusing.
Described one-level is focused to the focus that obtains with Manual focusing for one-level focused spot and carries out a light-metering; Described secondary focusing is empty the focus that described Manual focusing obtains, and automatic focus obtains new focus.
Further, the accelerometer of mobile electronic device is used to detect shaking degree; When the shaking degree that accelerometer detects be greater than first rock threshold value time, raise the detection frequency of accelerometer; When the shaking degree that accelerometer detects is less than static threshold, the detection frequency recovery of degree of will speed up meter.
Mobile electronic device sequential focusing system based on rocking detection provided by the invention, comprising:
Shaking degree detection module, for detecting the shaking degree of mobile electronic device;
Shaking degree comparison module, rock threshold value compare for described shaking degree and static threshold, first being rocked threshold value, second, if described shaking degree first is more than or equal to first rock threshold value, then judge that common rocking occurs mobile electronic device, focus on if simultaneously current, then cancel current focus movement, and detecting that shaking degree triggers one-level focus module lower than during static threshold; If shaking degree is more than or equal to second rock threshold value, then judge that mobile electronic device occurs acutely to rock and detecting that shaking degree triggers secondary focusing module lower than during static threshold.
One-level focus module; And secondary focusing module.
Further, described one-level focus module and secondary focusing module are all for realizing automatic focus.
Further, also comprising touch screen focus module, for when detecting that the screen of mobile electronic device is touched, carrying out touch screen focusing and preserving touch screen focusing on the focus obtained; Described shaking degree detection module also for detecting the shaking degree of mobile electronic device while touch screen focusing; Described one-level focus module is used for focusing on the focus that obtains for one-level focused spot with described touch screen and re-starts focusing; Described secondary focusing module focuses on for emptying described touch screen the focus obtained, and automatic focus obtains new focus.
Further, described shaking degree detection module is also for detecting the shaking degree of mobile electronic device when Manual focusing; Described one-level focus module is used for the focus that obtains with Manual focusing for one-level focused spot and carries out a light-metering; The focus that described secondary focusing module obtains for emptying described Manual focusing, and automatic focus obtains new focus.
Further, also comprise accelerometer and detect frequency adjustment module; Described shaking degree detection module detects shaking degree for using the accelerometer of mobile electronic device; Described accelerometer detect frequency adjustment module be used for when the shaking degree that accelerometer detects be greater than first rock threshold value time, the detection frequency of rising accelerometer; When the shaking degree that accelerometer detects is less than static threshold, the detection frequency recovery of degree of will speed up meter.
Owing to have employed said method, beneficial effect of the present invention is:
1. present invention achieves shaking degree detect and start corresponding focalizer according to the shaking degree of mobile electronic device, ensure that shooting picture is all clear available at any time, make user operation more simple, Consumer's Experience promotes greatly.
2. automatic focus, Manual focusing, touch screen focus on and carry out systematization integration with the testing result of rocking of accelerometer by the present invention, have given full play to the advantage of the various type of focusing.Particularly touch screen focuses on and under Manual focusing state, makes the booster action of accelerometer more effective.Under different focusing modes and in rationally the rocking of mobile electronic device, carry out focusing on or light-metering, meet photographed scene really and user expects at heart.Meanwhile, add and acutely rock detection, under this condition, be generally that user intends to cancel or switch photographed scene, need again to focus, therefore add this detection and the property easy to use of user is significantly promoted, ensure that picture is all clear available at any time.
3., at acceleration duration of work, dynamic adjustments detects frequency, and power consumption is declined to a great extent.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is the flow chart of the inventive method specific embodiment.
Fig. 2 is the workflow diagram of focusing task item in work pool in the present invention.
Embodiment
All features disclosed in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this specification, unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
As Fig. 1, basic thought of the present invention is when after the imaging program of mobile electronic device starts or after camera focus function opens, detect the shaking degree of mobile electronic device, if shaking degree is more than or equal to first rock threshold value, focus on if simultaneously current, then cancel current focus movement, then judge that common rocking occurs mobile electronic device, and detect shaking degree lower than during static threshold trigger one-level focus on, if shaking degree is more than or equal to second rock threshold value, then judge that mobile electronic device occurs acutely to rock, and detect shaking degree lower than during static threshold trigger secondary focusing, described first rocks threshold value is less than second and rocks threshold value, and static threshold is less than first and rocks threshold value.
In the present invention's first specific embodiment, described one-level focuses on and is automatic focus with secondary focusing.
Consider the function of the also touch screen focusing of most mobile electronic device, Manual focusing, this several type of focusing is integrated by another embodiment of the present invention, gives the priority that the above-mentioned type of focusing is different.Wherein, the priority that the priority > one-level that the priority > touch screen of the priority > Manual focusing of secondary focusing focuses on focuses on.
As Fig. 2, set up work pool, object is that the same time only allows a kind of focusing task item (secondary focusing, Manual focusing, touch screen focus on or one-level focuses on) to perform.When a focusing task item enters pond, if work at present pond is sky, perform immediately.Just the focusing task item into pond is less than or equal in the priority of the focusing task item of work pool execution if current, then cancel the current focusing task item performed, and the focusing task item performed immediately into pond, such as when adopting consecutive click chemical reaction screen, triggering touch screen focuses on, and now touch screen focusing task item is entered pond, if the touch screen focusing task item of existing last time performs in work pool, then cancel the current touch screen performed to focus on, start to perform the touch screen focusing task item into pond.If the current priority of focusing task item just performed at work pool higher than the focusing task item entering pond, is then cancelled this focusing task item entering pond and returns.
In addition, there occurs common rocking if detect, then judge in work pool, whether have certain focusing task item to perform, if so, then cancel the current focusing task item performed.
Based on the priority of the type of focusing and the work characteristics of work pool, the second embodiment of the present invention, the 3rd is implemented to be such:
Second embodiment
When detecting that the screen of mobile electronic device is touched, triggering touch screen focuses on and preserves touch screen and focuses on the focus obtained.Detect the shaking degree of mobile electronic device simultaneously, if shaking degree is more than or equal to first rock threshold value, focus on if simultaneously current, then cancel current focus movement, then judge that mobile electronic device occurs commonly to rock, and detecting that shaking degree focuses on, if shaking degree is more than or equal to second rock threshold value lower than triggering one-level during static threshold, then judge mobile electronic device occur acutely rock, and detect shaking degree lower than during static threshold trigger secondary focusing.
In the present embodiment, described one-level is focused to and focuses on the focus that obtains for one-level focused spot with described touch screen and re-start focusing; Described secondary focusing is empty described touch screen to focus on the focus obtained, and automatic focus obtains new focus.
3rd embodiment
While user is undertaken focusing on by the Manual focusing function of mobile electronic device, detect the shaking degree of mobile electronic device, if shaking degree is more than or equal to first rock threshold value, then judge that common rocking occurs mobile electronic device, focus on if simultaneously current, then cancel current focus movement, and detect shaking degree lower than during static threshold trigger one-level focus on, if shaking degree is more than or equal to second rock threshold value, then judge mobile electronic device occur acutely rock, and detect shaking degree lower than during static threshold trigger secondary focusing.
In the present embodiment, described one-level is focused to the focus that obtains with Manual focusing for one-level focused spot and carries out a light-metering; Described secondary focusing is empty the focus that described Manual focusing obtains, and automatic focus obtains new focus.Described some light-metering is the generic term in camera work field, refers to a bit analyze certain, measure this point take the photograph object reflectivity, according to the exposure of reflectivity adjustable lens make this point to take the photograph the brightness of object normal.
In each embodiment above-mentioned, the accelerometer using mobile electronic device to carry detects and rocks, mobile electronic device provides the calling interface of accelerometer, the open and close that can control accelerometer, the detection frequency arranging accelerometer and the detected value of reading accelerometer on x, y, z axle.
After camera lens is opened, open accelerometer, accelerometer detects x, y, z three directions with certain frequency (acquiescence 200ms once).If shaking degree is more than or equal to first rock threshold value, then thinks common and rock beginning.The concrete practice is, the value of currency and last time is subtracted each other by each detection, difference limen value is rocked when the absolute value of the currency in certain direction and the difference (hereinafter referred to as: direction difference) of upper sub-value is greater than first, or the direction difference in certain direction and last time this direction direction difference and absolute value be greater than first and rock and detect commonly rock beginning with then thinking during threshold value, accelerometer state more becomes ShakeStarting, and detection frequency is drawn high (example: 100ms once).
Commonly rock beginning, currently to focus on if detect simultaneously, then cancel current focus movement.
If detect, the absolute value of the currency in certain direction and the difference of upper sub-value is greater than second when rocking threshold value, then think to detect and acutely rock beginning.
If when the shaking degree detecting on each direction is less than static threshold, then thinks and rock end.Concrete, when the absolute value of the difference (hereinafter referred to as: direction difference) of each direction currency and upper sub-value is all less than static difference limen value, and the direction difference in each direction and last time this direction direction difference and absolute value when being all less than static and threshold value, then think that shaking degree is less than static threshold.Now rock end, degree of will speed up meter state changes Ready into, detects frequency and returns to default value.
Preferably, first scope of rocking difference limen value is that 0.078 ~ 0.082, the first to rock with the scope of threshold value be the 0.080 ~ 0.12, the second scope of rocking threshold value be 0.75 ~ 0.85, static and scope that is threshold value is 0.038 ~ 0.042, and the scope of static difference limen value is 0.018 ~ 0.022.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (10)
1., based on a mobile electronic device sequential focusing method of rocking detection, it is characterized in that, comprising:
Detect the shaking degree of mobile electronic device, if shaking degree is more than or equal to first rock threshold value, then judge that common rocking occurs mobile electronic device, focus on if simultaneously current, then cancel current focus movement, and detect shaking degree lower than during static threshold trigger one-level focus on, if shaking degree is more than or equal to second rock threshold value, then judge mobile electronic device occur acutely rock, and detect shaking degree lower than during static threshold trigger secondary focusing; Described first rocks threshold value is less than second and rocks threshold value, and static threshold is less than first and rocks threshold value.
2. a kind of mobile electronic device sequential focusing method based on rocking detection according to claim 1, is characterized in that, described one-level focuses on and is automatic focus with secondary focusing.
3. a kind of mobile electronic device sequential focusing method based on rocking detection according to claim 1, is characterized in that, when detecting that the screen of mobile electronic device is touched, triggering touch screen focuses on and preserves touch screen and focuses on the focus obtained; Detect the shaking degree of mobile electronic device simultaneously, if shaking degree is more than or equal to first rock threshold value, then judge that common rocking occurs mobile electronic device, focus on if simultaneously current, then cancel current focus movement, and detect shaking degree lower than during static threshold trigger one-level focus on, if shaking degree is more than or equal to second rock threshold value, then judge mobile electronic device occur acutely rock, and detect shaking degree lower than during static threshold trigger secondary focusing;
Described one-level is focused to and focuses on the focus that obtains for one-level focused spot with described touch screen and re-start focusing; Described secondary focusing is empty described touch screen to focus on the focus obtained, and automatic focus obtains new focus.
4. a kind of mobile electronic device sequential focusing method based on rocking detection according to claim 1, it is characterized in that, the shaking degree of mobile electronic device is detected when Manual focusing, if shaking degree is more than or equal to first rock threshold value, then judge that common rocking occurs mobile electronic device, focus on if simultaneously current, then cancel current focus movement, and detect shaking degree lower than during static threshold trigger one-level focus on, if shaking degree is more than or equal to second rock threshold value, then judge that mobile electronic device occurs acutely to rock, and detect shaking degree lower than during static threshold trigger secondary focusing,
Described one-level is focused to the focus that obtains with Manual focusing for one-level focused spot and carries out a light-metering; Described secondary focusing is empty the focus that described Manual focusing obtains, and automatic focus obtains new focus.
5. according to a kind of mobile electronic device sequential focusing method based on rocking detection in claim 1 ~ 4 described in any one, it is characterized in that, using the accelerometer of mobile electronic device to detect shaking degree; When the shaking degree that accelerometer detects be greater than first rock threshold value time, raise the detection frequency of accelerometer; When the shaking degree that accelerometer detects is less than static threshold, the detection frequency recovery of degree of will speed up meter.
6., based on a mobile electronic device sequential focusing system of rocking detection, it is characterized in that, comprising:
Shaking degree detection module, for detecting the shaking degree of mobile electronic device;
Shaking degree comparison module, rock threshold value compare for described shaking degree and static threshold, first being rocked threshold value, second, if described shaking degree first is more than or equal to first rock threshold value, then judge that common rocking occurs mobile electronic device, focus on if simultaneously current, then cancel current focus movement, and detecting that shaking degree triggers one-level focus module lower than during static threshold; If shaking degree is more than or equal to second rock threshold value, then judge that mobile electronic device occurs acutely to rock and detecting that shaking degree triggers secondary focusing module lower than during static threshold;
One-level focus module;
And secondary focusing module.
7. a kind of mobile electronic device sequential focusing system based on rocking detection according to claim 6, it is characterized in that, described one-level focus module and secondary focusing module are all for realizing automatic focus.
8. a kind of mobile electronic device sequential focusing system based on rocking detection according to claim 6, it is characterized in that, also comprising touch screen focus module, for when detecting that the screen of mobile electronic device is touched, carrying out touch screen focusing and preserving touch screen focusing on the focus obtained;
Described shaking degree detection module also for detecting the shaking degree of mobile electronic device while touch screen focusing;
Described one-level focus module is used for focusing on the focus that obtains for one-level focused spot with described touch screen and re-starts focusing;
Described secondary focusing module focuses on for emptying described touch screen the focus obtained, and automatic focus obtains new focus.
9. a kind of mobile electronic device sequential focusing system based on rocking detection according to claim 6, is characterized in that, described shaking degree detection module is also for detecting the shaking degree of mobile electronic device when Manual focusing;
Described one-level focus module is used for the focus that obtains with Manual focusing for one-level focused spot and carries out a light-metering;
The focus that described secondary focusing module obtains for emptying described Manual focusing, and automatic focus obtains new focus.
10. according to a kind of mobile electronic device sequential focusing system based on rocking detection in claim 6 ~ 9 described in any one, it is characterized in that, also comprising accelerometer and detecting frequency adjustment module;
Described shaking degree detection module detects shaking degree for using the accelerometer of mobile electronic device;
Described accelerometer detect frequency adjustment module be used for when the shaking degree that accelerometer detects be greater than first rock threshold value time, the detection frequency of rising accelerometer; When the shaking degree that accelerometer detects is less than static threshold, the detection frequency recovery of degree of will speed up meter.
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Address after: 610041, Chengdu, Chengdu, Sichuan, China (Sichuan) free trade test area, Chengdu high tech Zone, middle section of Tianfu Avenue, No. 1268, 1 Patentee after: Chengdu PinGuo Digital Entertainment Ltd. Address before: 610041 C12-16 software building, Tianfu Software Park, hi tech Zone, Sichuan, Chengdu Patentee before: Chengdu PinGuo Digital Entertainment Ltd. |