CN102801959A - Monitoring system and method for preventing watching TV from close quarter based on set top box range finding - Google Patents
Monitoring system and method for preventing watching TV from close quarter based on set top box range finding Download PDFInfo
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Abstract
The invention discloses a monitoring system for preventing watching TV from a close quarter based on set top box range finding. The system comprises a set top box, an infrared inductor, a minitype camera, an image processing center, and a decision center. The set top box is foundation of the whole monitoring system, and provides physical equipment and computing power. The infrared inductor using passive infrared and using a human body as an infrared inducing source is used to monitor whether a viewer exists in an induction scope and trigger the camera to start. The minitype camera is used to collect images and send the images to the image processing center. The image processing center using face recognition technology and image range finding technology analyzes the images sent by the camera. The decision center carries out corresponding strategies according to analysis and process results of the image processing center and a local timer. An embodiment of the invention also discloses a method for preventing watching TV from a close quarter based on the set top box range finding. The method can flexibly and intelligently carry out corresponding strategies according to practical situations, and prevent asthenopia or even visual impairment of the viewer caused by watching TV from a close quarter for a long time.
Description
Technical field
The present invention relates to digital home technical field, be specifically related to a kind of the range finding and prevent closely to watch the supervisory control system and the method for TV based on STB.
Background technology
Along with popularizing of television set, see that TV has become an indispensable part in people's daily life.Yet the ray that television picture tube gives off, but the visual purple in the lot of consumption retina.If the TV overlong time is seen in the room in that light is bad continuously, will be easy to cause asthenopia, make and watch the TV person's eyesight obviously descends.In order to reduce the injury that ray that television set gives off causes people's eyes, television set and people's distance should be 4～6 times of screen diagonal.
Overwhelming majority children like seeing TV, but usually can be unconsciously to television set near, and, can closely watch TV for a long time owing to lack self-control.Closely promptly see that less than 4 times of screen diagonal TV is easy to cause myopia for a long time, in order to protect child's eyesight, the head of a family have to usually supervise oneself child does not allow them closely to see TV for a long time.
STB is that a kind of television terminal that relies on provides integrated information professional home appliance.Make the user on existing television set, watch digital television program, and can carry out interactive digital amusement, education and commercialization activity through network.Can expand the function of STB through the method for adding module.The present invention embeds infrared inductor and small-sized image pickup head in STB, to use infrared induction technology, face recognition technology and image ranging technology.
Under the normal condition, the thermostasis of human body and be higher than ambient temperature can infrared radiation.The passive type infrared inductor be exactly with human body as the infrared induction source, when the people got into induction range, the infrared ray that human body radiation comes out can be detected by inductor, infrared inductor will be connected contactor, launch load.
The face feature that face recognition technology is based on the people carries out work.To the image of input, adopt relevant algorithm, judge whether it exists people's face.If there is people's face, then further analyst's face position and face organ's information according to these information, can be differentiated the identity of people's face.The other biological recognition technology of comparing, face recognition technology is noncontact, the user does not need directly to contact with equipment.And right and wrong are enforceable, and the human face image information that is identified can initiatively be obtained.The present invention only judges the existence whether people's face is arranged in the image with recognition of face, with confirm to touch infrared inductor human body really rather than other infrared radiation sources.
Size of images representes with pixel unit, but between actual size unit's millimeter of it and distance linear relationship arranged, and measurement ratio between the two is a constant, is determined by related physical devices such as camera objective.Therefore Applied Digital image processing techniques and related algorithm analysis image can be realized the purpose of finding range.The image ranging technology is through analysis image, measures the technology of distance between object and the camera in the image.What the present invention used is a kind of single image ranging technology---the out of focus range finding that square is constant, and only need single image to get final product, do not need a plurality of cameras or plurality of pictures.This ranging technology is realized having the purpose of finding range small error, but can ignore in the present invention through the blur radius at measurement image edge.
In order to prevent that the beholder from closely watching TV for a long time, television set can be after opening, whenever at regular intervals, and display reminding information on screen just; Perhaps after television set was opened the regular hour, the positive closing television set noted closely not watching for a long time TV to remind the beholder.TV station then is at each some regular time, and the issue information is reminded spectators.
Existing technology is the one-sided mechanicalness of a television set or TV station implementation strategy statically, can't make response according to beholder's actual conditions, lacks flexibility and intelligent.Though television set can be monitored the time length that the beholder sees TV, can't monitor beholder's distance apart from TV when seeing TV.And television set can't confirm whether the beholder necessarily just watches before television set when broadcast program.Therefore must adopt some technological means, whether the monitoring beholder is before television set, and the distance between beholder and the television set, the time that combines the beholder to continue to see TV again, this is made response, and carry out corresponding strategy.
Summary of the invention
To the existing technology that prevents closely to watch TV can only mechanicalness implementation strategy statically; Solve the distance between dynamic monitoring beholder and the television set; Implementation strategy intelligently flexibly, the embodiment of the invention be through embedding infrared inductor and small-sized image pickup head in STB, use that infrared induction is technological, face recognition technology and image ranging technology; A kind of dynamic monitoring system is provided, prevents that the beholder from closely watching TV.
In order to realize goal of the invention, the embodiment of the invention discloses a kind of the range finding and prevent closely to watch the supervisory control system of TV based on STB, comprising:
STB, the basis of whole monitoring system provides physical equipment and computing power;
Infrared inductor adopts passive infrared, as the infrared induction source, is used to monitor whether the beholder is arranged in the induction range with human body, triggers the startup of camera;
The small-sized image pickup head is used for images acquired, and sends image to the image processing center;
Face recognition technology and image ranging technology are used, the image that the analyzing and processing camera transmits in the image processing center;
Decision center according to the analysis processing result at image processing center and the chronometric data of self timer, is implemented corresponding strategy.
In the equal coil insertion device top box of said infrared inductor and small-sized image pickup head, need outside STB or television set, not increase independently external device.
Infrared inductor is along with the startup of STB starts, and in the monitoring state always, and camera, image processing center and decision center then start conditionally and close.
System also uses face recognition technology, and to the image of camera collection, whether wherein have people face exist, and the result is sent to decision center if identifying, as the foundation of strategy enforcement.
System is the application image ranging technology also, and the image of camera collection is analyzed combing, beholder in the measurement image and the distance between the television set, and the result sent to decision center, the foundation of implementing as strategy.
System design a decision center, as the functional module of implementation strategy,,, implement corresponding strategy in conjunction with the timing length of self timer according to the analysis processing result at the image processing center of said system.
Accordingly, the embodiment of the invention also discloses the method that a kind of STB range finding prevents closely to watch TV, comprising:
Infrared inductor, is touched to the existence that the beholder is arranged at the monitoring range internal induction, triggers camera;
Supervisory control system monitors camera and starts, and starts image processing center and decision center, and the timer of decision center picks up counting;
Camera begins with set time frequency collection image;
The image that the image processing center receives camera carries out analyzing and processing;
Decision center is implemented corresponding strategy according to the analysis processing result and self timer timing result at image processing center.
In the time span that supervisory control system is being set, when around television set, not monitored the beholder in the scope of regulation, close camera, image processing center and decision center in the said method.Image processing center applications face recognition technology and image ranging technology in the said method; Image for camera collection; Whether have beholder exist, if having, then further measure the distance between beholder and the television set if at first differentiating; If not then need not find range, then the result is sent to decision center.
If the beholder is in the monitoring range of supervisory control system in the said method, to watch TV to reach or exceed schedule time, decision center is sent and is reminded or the positive closing television set.
The present invention has the following advantages: the present invention is through embedding infrared inductor and small-sized image pickup head in STB; Use infrared induction technology, face recognition technology and image ranging technology; Provide a kind of the range finding to prevent closely to watch the supervisory control system of TV based on STB; Distance between monitoring beholder and the television set prevents that the beholder from closely seeing TV for a long time, thereby the protection beholder avoids causing asthenopia even visual impairment because closely watch TV for a long time.In addition:
Adopt the small-sized image pickup head, volume is little, can be too unshowy, can not cause beholder's dislike during work.Adopt passive infrared, do not need the operation of beholder's interfering system, automatically induction;
Employing infrared induction technology, the startup of control camera, image processing center and decision center; And decision center also can during not in the television set short range, be closed camera, image processing center and the operation of self the beholder, thereby conservation of power and computing power;
Adopt face recognition technology, can discern what sensed by infrared inductor is human body rather than other infrared radiation sources, and the distance between dynamic monitoring beholder and the television set, decision center can be implemented the strategy that responds in view of the above neatly, have intelligent and automaticity.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is for embedding the STB illustraton of model of infrared probe and small-sized image pickup head among the present invention;
Fig. 2 is supervisory control system Organization Chart among the present invention;
Fig. 3 is the boot sequence of supervisory control system among the present invention;
Fig. 4 is the workflow diagram of method for supervising among the present invention;
Fig. 5 is the decision process figure of decision center among the present invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making all other embodiment that obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Whole monitoring system of the present invention is made up of infrared inductor, camera, image processing center and decision center.
Existing STB also has higher autgmentability on function; Consider that existing STB can also embed other hardware devices on physical space; The present invention is embedded in the STB function of striking machine top box with infrared inductor and small-sized image pickup head (being similar to the notebook camera).The physical model of STB is described below in conjunction with Fig. 1:
The infrared probe of infrared inductor and small-sized image pickup head all are embedded in the front end of STB, and the former as the infrared induction source, is used to survey infrared ray with human body, and the latter then is used for images acquired.
The hardware performance of existing STB is all enough good, can bear comparatively complicated calculation task, so combine to be embedded into infrared inductor and the small-sized image pickup head in the STB, uses infrared induction technology, face recognition technology and image ranging technology.The framework of whole monitoring system is described below in conjunction with Fig. 2:
Infrared inductor is in monitoring state always along with the unlatching of STB, the short range whether the monitoring beholder gets into television set; If infrared inductor is touched, connect load circuit, start camera;
Camera receives the triggering of infrared inductor, after the startup, further touches the startup of image processing center and decision center; Send the image processing center to simultaneously with regular time frequency collection view data, and with the data that collect, analyze;
The image processing center receives the view data from camera; At first use face recognition technology, differentiate in the image whether beholder's existence is arranged,, then directly this result is informed decision center if do not have; If have, further application image ranging technology is then measured beholder and the distance of television set this moment, sends data to decision center then;
Decision center, itself safeguards has a timer, when decision center starts, picks up counting; Decision center receives the processing result image at image processing center, in conjunction with the chronometric data of self timer, the result is made response, implements corresponding strategy;
Though the performance of STB is enough supported the continuous service of whole monitoring system, can cause the waste of a lot of electric power and computing power like this.Camera, image processing center and decision center do not need in running order always, so can let them start conditionally and close.The present invention controls closing of they with their startup of infrared inductor control with decision center.
The boot sequence of supervisory control system is described below in conjunction with Fig. 3:
1 infrared inductor starts with STB, is in monitoring state;
2 beholders get into the infrared inductor monitoring range, touch infrared inductor;
3 cameras start;
4 supervisory control systems monitor camera and start;
5 image processing centers and decision center start, and timer picks up counting.
The workflow of method for supervising is described below in conjunction with Fig. 4:
1 television set and STB start, and infrared inductor starts, and is in the monitoring state;
2 beholders walk close to television set, get into the monitoring range of infrared inductor.Infrared inductor is sensed the beholder and is walked close to television set, is touched, and triggers to start camera, and camera begins with regular time frequency collection view data;
3 supervisory control systems monitor camera and start, and start image processing center and decision center, and the timer of decision center picks up counting;
4 image processing centers and decision center start, and the timer of decision center picks up counting;
5 image processing centers receive the image of camera, differentiate in the image whether have people's face with face recognition technology, to confirm that the beholder is near television set;
If recognition of face has detected people's face, then the further application image ranging technology in image processing center is measured the distance between beholder and the television set, and the result is sent to decision center;
If recognition of face has not monitored people's face, then directly this result is sent to decision center;
6 decision centers receive the result at image processing center, in conjunction with the timer of self, implement corresponding strategy.
The decision process of decision center is described below in conjunction with Fig. 5:
Whenever, the image processing center as 10 seconds, has not monitored the people near television set in not oversize time span, and decision center judges that the beholder away from television set, stops the execution of All Policies.Close camera, image processing center and decision center, and infrared inductor is still in the monitoring state.
From the image that camera transmits, recognition of face has detected people's face, explains that the beholder is in the television set short range.If the timer timing reaches not oversize time span, as 30 seconds, decision center judged that the beholder might closely watch TV for a long time so.Decision center will with prompting message, send to television set with the mode of captions prompting, be presented at the below of video screen, remind the beholder to note closely not seeing TV.
After sending the captions prompting,, then continue monitoring if supervisory control system monitors the beholder not in the television set short range.The beholder is also in the television set short range else if, and the timer timing reaches a sufficiently long time span, and as 5 minutes, decision center judged that the beholder is closely watching TV for a long time so.The mode that decision center will at first be reminded with literal covers whole video screen with literal, and the prompting beholder is in short time, as 10 seconds, if not away from television set, with the positive closing television set.
After the warning of sending the positive closing television set, supervisory control system monitor the beholder in official hour away from television set, will recover video screen so, continue monitoring then; If the beholder also not away from television set, close the positive closing television set simultaneously camera, image processing center and decision center and close so by decision center, and keep infrared inductor in the monitoring state.
More than a kind of to the embodiment of the invention provided range finding prevents closely to watch the supervisory control system of TV to carry out detailed introduction based on STB; Used concrete example among this paper principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. one kind prevents closely to watch to it is characterized in that the supervisory control system of TV based on STB range finding, comprising:
STB, the basis of whole monitoring system provides physical equipment and computing power;
Infrared inductor adopts passive infrared, as the infrared induction source, is used to monitor whether the beholder is arranged in the induction range with human body, triggers the startup of camera;
The small-sized image pickup head is used for images acquired, and sends image to the image processing center;
Face recognition technology and image ranging technology are used, the image that the analyzing and processing camera transmits in the image processing center;
Decision center according to analysis processing result and self timer at image processing center, is implemented corresponding strategy.
2. as claimed in claim 1 the range finding based on STB prevents closely to watch the supervisory control system of TV; It is characterized in that; In the equal coil insertion device top box of said infrared inductor and small-sized image pickup head, need outside STB or television set, not increase independently external device.
3. as claimed in claim 1 the range finding based on STB prevents closely to watch the supervisory control system of TV; It is characterized in that; Infrared inductor is along with the startup of STB starts; And in the monitoring state always, camera, image processing center and decision center then start conditionally and close.
4. as claimed in claim 1 the range finding based on STB prevents closely to watch the supervisory control system of TV; It is characterized in that; System also uses face recognition technology, and whether to the image of camera collection, identifying wherein has people's face to exist; And the result sent to decision center, the foundation of implementing as strategy.
5. as claimed in claim 1 the range finding based on STB prevents closely to watch the supervisory control system of TV; It is characterized in that; System is the application image ranging technology also, and the image of camera collection is analyzed combing, beholder in the measurement image and the distance between the television set; And the result sent to decision center, the foundation of implementing as strategy.
6. as claimed in claim 1 the range finding based on STB prevents closely to watch the supervisory control system of TV; It is characterized in that; System design a decision center, as the functional module of implementation strategy, according to the analysis processing result at the image processing center of said system; In conjunction with the timing length of self timer, implement corresponding strategy.
7. a STB is found range and is prevented closely to watch the method for TV, it is characterized in that, comprising:
Infrared inductor, is touched to the existence that the beholder is arranged at the monitoring range internal induction, triggers camera;
Supervisory control system monitors camera and starts, and starts image processing center and decision center, and the timer of decision center picks up counting;
Camera begins with set time frequency collection image;
The image that the image processing center receives camera carries out analyzing and processing;
Decision center is implemented corresponding strategy according to the analysis processing result and self timer timing result at image processing center.
8. STB range finding as claimed in claim 7 prevents closely to watch the method for TV; It is characterized in that; Work as supervisory control system in the said method in the time span of setting; When around television set, not monitored the beholder in the scope of regulation, close camera, image processing center and decision center.
9. STB range finding as claimed in claim 7 prevents closely to watch the method for TV, it is characterized in that image processing center applications face recognition technology and image ranging technology in the said method; Image for camera collection; Whether have beholder exist, if having, then further measure the distance between beholder and the television set if at first differentiating; If not then need not find range, then the result is sent to decision center.
10. STB range finding as claimed in claim 7 prevents closely to watch the method for TV; It is characterized in that; If the beholder is in the monitoring range of supervisory control system in the said method, to watch TV to reach or exceed schedule time, decision center is sent and is reminded or the positive closing television set.
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| CN103118297A (en) * | 2013-01-22 | 2013-05-22 | 广东星海数字家庭产业技术研究院有限公司 | Fatigue-prevention digital television system based on motion identification |
| CN103297755A (en) * | 2013-05-13 | 2013-09-11 | 广东欧珀移动通信有限公司 | Video monitoring method and video monitoring terminal |
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Application publication date: 20121128 |