CN102842291B - A kind of back light adjusting system based on obverse face detection and method - Google Patents
A kind of back light adjusting system based on obverse face detection and method Download PDFInfo
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- CN102842291B CN102842291B CN201210322881.XA CN201210322881A CN102842291B CN 102842291 B CN102842291 B CN 102842291B CN 201210322881 A CN201210322881 A CN 201210322881A CN 102842291 B CN102842291 B CN 102842291B
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Abstract
The invention discloses a kind of back light adjusting system based on obverse face detection and method, comprise as lower module: image capture module: by image capture device, gather head image or the video information of user, as the source information of information processing; Message processing module: the image that process image capture module gathers or video information, identify and catch face image, judging whether it is front face, controlling display backlight brightness, and control signal is sent to display driver control module according to judged result; Display driver control module: receive the display backlight brightness control signal that message processing module sends, the brightness of adjustment display backlight.
Description
Technical field
The present invention relates to the technical field such as sensor technology, image procossing, specifically, relate to a kind of back light adjusting system based on obverse face detection and method.
Background technology
To the care of consumer's psycho-emotional and based on the design of consumer's use habit be " people-oriented ", " human oriented design " theory affirmative with perfect, be the indispensable aspect of current product design.
At the intelligent terminal that our everyday exposure arrives, as in notebook computer, mobile phone, pad series products, audio/video player and various sector application built-in terminal, LCDs is important system unit, sharpness is more and more higher, size is increasing, the power consumption of LCDs is also more and more obvious simultaneously, and the backlight of closing LCDs is in time one of major way of control terminal power consumption.
The backlight control mode of general LCDs is as follows:
1. the mode of operation of terminal device is set, as notebook computer, in mains-supplied situation, can backlight Chang Liang be kept; In a battery supply mode, then need setting terminal equipment at energy saver mode.
2. in the power save mode, after terminal equipment user interface is without input certain time interval T, then the backlight illumination of terminal device is turned down or close the backlight of display screen completely, reaching energy-conservation object.T is generally a Fixed Time Interval of default, can not adjust according to the actual conditions of terminal works.
In actual application, above-mentioned method for controlling backlight thereof can obtain certain energy-saving effect, but is also with to user and serves inconvenience, such as:
1. in panel discussion process, a document file page may need the long time is discussed, if equipment sets energy saver mode, then user needs to input to system within a certain period of time frequently, as rolling mouse, knock keyboard or pass through contact touch-screen, to avoid terminal to enter energy saver mode, close display screen display.And each terminal returns to from energy saver mode the time that normal display screen brightness all needs a few second, can have influence on the continuity of user's thinking, cause the inconvenience in use procedure.
2. in mobile phone or pad series products, user may carry out reading documents, browse webpage or appreciate the operations such as picture, depend on the interest of user to content of pages, may be not quite similar in the time that each page user spends, for the interested page of user, may spend the longer time, in the process, user also must turn down brightness of display screen to terminal system input to avoid terminal or close display screen frequently.
In electronic product develop rapidly, under the application background that particularly portable, embedded product is propagated its belief on a large scale, user can use electronic product to carry out the work or recreation and amusement in almost any occasion.Under this background, the input and output of terminal just must adapt to the custom of user as much as possible.Existing terminal backlight control method can not regulate the shut-in time of backlight automatically according to use scenes automated intelligent, and by means of the frequent input of user, must cause inconvenience to user, reduces the user friendly characteristic of product to a great extent.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of back light adjusting system based on obverse face detection and method, effectively solves terminal device display backlight and automatically closes the inconvenience caused to user, greatly improve customer experience.
The present invention adopts following technical scheme to realize goal of the invention:
Based on a back light adjusting system for obverse face detection, it is characterized in that, comprise as lower module:
Image capture module: by image capture device, gathers head image or the video information of user, as the source information of information processing;
Message processing module: the image that process image capture module gathers or video information, identify and catch face image, judging whether it is front face, controlling display backlight brightness, and control signal is sent to display driver control module according to judged result;
Display driver control module: receive the display backlight brightness control signal that message processing module sends, the brightness of adjustment display backlight.
As the further restriction to the technical program, also comprise:
Backlight control pattern arranges module: the backlight control pattern arranging terminal device, comprises and manually arranging and Lookup protocol two kinds of modes.
The invention also discloses a kind of backlight adjusting method based on obverse face detection, it is characterized in that, comprise the steps:
(1) arrange backlight control pattern to arrange, comprise and manually arranging and Lookup protocol two kinds of modes;
(2) image acquisition, adopts picture pick-up device to obtain user's image or video information, and passes to message processing module by the input interface of message processing module;
(3) information processing, processes the image received or video information, carries out obverse face detection, judges whether user pays close attention to display screen according to testing result, and output controls the control signal of display backlight brightness to display driver control module;
(4) display driver controls, and according to the display backlight brightness control signal exported from message processing module, drives display screen, adjusting backlight luminance;
Described step (3) comprises the steps:
(3.1) message processing module processes the image received or video information, judges whether face is front face, if message processing module judges that user pays close attention to screen, then the backlight of display screen continues to remain on opening; If user's sight line departs from screen, and through prior setting-up time, then adjust display backlight and enter energy saver mode.
Compared with prior art, advantage of the present invention and good effect are: the present invention is by obverse face detection technology, in conjunction with conventional backlight timer control mode, effectively can solve terminal device display backlight and automatically close the inconvenience caused to user, greatly improve customer experience, embody the design concept of terminal device " people-oriented ".And, obverse face detection technology is less demanding for the sharpness of image relative to other technology (as eye tracking), image size also can be compressed to very little, such as adopt 30*30 size, therefore, whole degree for the treatment of only needs to spend little memory headroom.From the angle of Terminal Design, the size of display screen is increasing, carries out to it function that low power consumption control is terminal indispensability; Camera has become the standard configuration of present terminal equipment as notebook, mobile phone, pad series products; And the processor processing power of terminal device is also more and more stronger, realizes Face datection and can not cause extra burden.Design of the present invention can when not additionally increase terminal device cost greatly improving product design user friendly, there is obvious using value.
Accompanying drawing explanation
Fig. 1 is the functional-block diagram of the preferred embodiment of the present invention.
Fig. 2 is the process flow diagram of the preferred embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the present invention is further described in detail.
See Fig. 1 and Fig. 2, the present invention includes backlight control pattern and module, image capture module, message processing module, display driver control module are set.
Image capture module: by image capture device, gathers head image or the video information of user, as the source information of information processing;
Message processing module: the image that process image capture module gathers or video information, identify and catch face image, by front face sorter, judging whether it is front face, control display backlight brightness according to judged result, and control signal is sent to display driver control module;
Display driver control module: receive the display backlight brightness control signal that message processing module sends, the brightness of adjustment display backlight.
Backlight control pattern arranges module: the backlight control pattern arranging terminal device, comprises and manually arranging and Lookup protocol two kinds of modes.Method to set up comprises manually setting and Lookup protocol: manually arrange, and is directly manually set to the intelligent backlight adjustment modes based on obverse face detection in terminal device; Lookup protocol, when terminal device partial software starts, Lookup protocol backlight mode enters the intelligent backlight adjustment modes based on obverse face detection, as mobile phone browser, text file reader etc.
The invention also discloses a kind of backlight adjusting method based on obverse face detection, comprise the steps:
(1) arrange backlight control pattern to arrange, comprise and manually arranging and Lookup protocol two kinds of modes, be manually arranged in terminal device the intelligent backlight adjustment modes be directly manually set to based on obverse face detection; Lookup protocol Lookup protocol backlight mode when terminal device partial software starts enters the intelligent backlight adjustment modes based on obverse face detection, as mobile phone browser, and text file reader etc.;
(2) image acquisition, adopts CCD or CMOS camera to obtain user's image or video information, and passes to message processing module by the input interface of message processing module;
(3) information processing, processes the image received or video information, carries out obverse face detection, and obtain face directional information, concrete steps are as follows:
First, carry out obverse face detection to input picture S, judge whether to there is front face, judgment mode adopts prior art, does not repeat them here.If obverse face detection success, then think that user pays close attention to display screen, keep display backlight Chang Liang; If obverse face detection failure, then think that user's sight line leaves display screen, and after the time through realizing setting, then export backlight control signal and make display screen enter energy saver mode.
(4) display driver controls, and according to the display backlight brightness control signal exported from message processing module, drives display screen, adjusting backlight luminance.
Described step (3) comprises the steps:
(3.1) message processing module processes the image received or video information, judges whether face is front face, if message processing module judges that user pays close attention to screen, then the backlight of display screen continues to remain on opening; If user's sight line departs from screen, and through prior setting-up time, then adjust display backlight and enter energy saver mode.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited only to above-mentioned citing, and the change that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement, also belong to protection scope of the present invention.
Claims (4)
1. based on a back light adjusting system for obverse face detection, it is characterized in that, comprise as lower module:
Image capture module: by image capture device, gathers head image or the video information of user, as the source information of information processing;
Message processing module: the image that process image capture module gathers or video information, identify and catch face image, by front face sorter, judging whether it is front face, control display backlight brightness according to judged result, and control signal is sent to display driver control module;
Display driver control module: receive the display backlight brightness control signal that message processing module sends, the brightness of adjustment display backlight.
2., according to claim 1 based on the back light adjusting system of obverse face detection, it is characterized in that, also comprise:
Backlight control pattern arranges module: the backlight control pattern arranging terminal device, comprises and manually arranging and Lookup protocol two kinds of modes.
3. based on a backlight adjusting method for obverse face detection, it is characterized in that, comprise the steps:
(1) arrange backlight control pattern to arrange, comprise and manually arranging and Lookup protocol two kinds of modes;
(2) image acquisition, adopts picture pick-up device to obtain user's image or video information, and passes to message processing module by the input interface of message processing module;
(3) information processing, the image received or video information are processed, carry out obverse face detection by front face sorter, judge whether user pays close attention to display screen according to testing result, and output controls the control signal of display backlight brightness to display driver control module;
(4) display driver controls, and according to the display backlight brightness control signal exported from message processing module, drives display screen, adjusting backlight luminance.
4. according to claim 3 based on the backlight adjusting method of obverse face detection, it is characterized in that, described step (3) comprises the steps:
(3.1) message processing module processes the image received or video information, judges whether face is front face, if message processing module judges that user pays close attention to screen, then the backlight of display screen continues to remain on opening; If user's sight line departs from screen, and through prior setting-up time, then adjust display backlight and enter energy saver mode.
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| CN106488027B (en) * | 2016-10-31 | 2019-05-17 | 维沃移动通信有限公司 | A kind of control method and mobile terminal of indicator light |
| CN109040414A (en) * | 2017-06-12 | 2018-12-18 | 上海耕岩智能科技有限公司 | A kind of method that terminal and terminal display brightness are adjusted |
| CN107679506A (en) * | 2017-10-12 | 2018-02-09 | Tcl通力电子（惠州）有限公司 | Awakening method, intelligent artifact and the computer-readable recording medium of intelligent artifact |
| CN108347814A (en) * | 2018-03-02 | 2018-07-31 | 青岛海尔智能家电科技有限公司 | A kind of method for controlling backlight thereof of switch, control device and switch |
| CN108847191B (en) * | 2018-07-12 | 2020-08-11 | 广州视源电子科技股份有限公司 | Backlight adjusting system, backlight adjusting method and device thereof, and intelligent interaction equipment |
| CN109712549A (en) * | 2018-12-24 | 2019-05-03 | 深圳市巨烽显示科技有限公司 | A kind of method and device for saving display energy consumption |
| CN110113648A (en) * | 2019-05-16 | 2019-08-09 | 济南浪潮高新科技投资发展有限公司 | Energy saving television control system and TV |
| CN110534073A (en) * | 2019-07-30 | 2019-12-03 | 华为技术有限公司 | A kind of screen luminance adjustment method and device |
| CN110659008A (en) * | 2019-08-27 | 2020-01-07 | 努比亚技术有限公司 | Terminal interface display method, terminal and computer readable storage medium |
| CN110572596A (en) | 2019-09-11 | 2019-12-13 | 深圳创维－Rgb电子有限公司 | television and backlight control method and device thereof and readable storage medium |
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Effective date of registration: 20190805 Address after: 250000 Building No. 3, Osheng Building, Jinan High-tech Zone, Shandong 1505 Patentee after: Shandong leading electronic technology Co., Ltd. Address before: Qilu Software Building No. 1768 Xinluo Avenue high tech Zone of Ji'nan City, Shandong province 250101 B C201 Patentee before: Jinan Microcrystalline Electronic Technology Co., Ltd. |