CN101714044B - Camera positioning-based touch screen system - Google Patents
Camera positioning-based touch screen system Download PDFInfo
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- CN101714044B CN101714044B CN2009103122052A CN200910312205A CN101714044B CN 101714044 B CN101714044 B CN 101714044B CN 2009103122052 A CN2009103122052 A CN 2009103122052A CN 200910312205 A CN200910312205 A CN 200910312205A CN 101714044 B CN101714044 B CN 101714044B
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Abstract
The invention relates to interaction control of graphical user interfaces, in particular to a camera positioning-based touch screen system suitable for large screens. The camera positioning-based touch screen system comprises at least one first group of cameras arranged on the back of a target touch area, and at least one second group of cameras arranged on the surface of the target touch area; the first group of cameras are used for acquiring light spot actuating signals projected to the target touch area; the second group of cameras are used for acquiring touch actuating signals entering a space of a shooting area of the second group of cameras; moreover, the system also comprises at least one switching device. When the system is in a light spot actuating signal mode, the system can only identify the light spot actuating signals entering the target touch area, and limbs of a human body or other articles held by the human body cannot operate the graphical user interfaces, so that the inconvenience brought to users due to non-instruction operation of the users is prevented.
Description
Technical field
The present invention relates to interaction control of graphical user interfaces, especially a kind of touch-screen system that is applicable to giant-screen based on camera positioning.
Background technology
Along with the development of Computer Multimedia Technology, interactive electric whiteboard is as a kind of advanced person's education or the auxiliary human-computer interaction device of meeting, can realize dust-free writing, arbitrarily writes, function such as long-range interchange.From hardware principle, interactive electric whiteboard has merged Large Screen Display Technology, accurate assignment test technology etc., have multiple technologies can realize that electronic whiteboard accurately locatees, representative is technology such as electromagnetic induction, infrared ray, resistance, ultrasound wave, CCD.Every kind of technology all has different characteristics and advantage, occupies certain share on electronic whiteboard market.Touch-screen system based on the CCD camera positioning has characteristics such as resolution height, the location is accurate, simple in structure, cost is low, has wide application space aspect the giant-screen touch location, the technician updates its technology and method, now has been applied in the multiple computer media interactive system.
Touch-screen principle based on camera positioning is to utilize the one or more cameras in display screen frame place from different visual angles filmed display screen, make screen be in the viewfinder range fully, image when image when collection has touch and no touch compares, the coordinate position of the formed image spot of object corresponding to the display screen surface blocked in analysis, carried out by the instruction that calculation processing apparatus carries out discriminance analysis and is converted into response, thereby finished man-machine interactive operation.
Chinese patent CN200510089933.3 discloses a kind of virtual touch screen system based on camera, utilize two or more cameras to take finger from different visual angles and be parallel to moving or click action on the virtual screen of display screen, and discern these actions and be translated into corresponding instruction by calculation element and carried out.
But there are some defectives in above-mentioned patent: in actual applications, before standing in the giant-screen of interactive electric whiteboard, the people imparts knowledge to students or during meeting, can carry out some maloperations, certain part of for example whole palm or health and be not only a finger contact screen, perhaps application person's some customs as finger are arbitrarily specified the position, somewhere or the zone of screen.Yet this moment, camera still can be gathered and by this operation of calculation element processing execution.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of touch-screen system based on camera positioning is provided, and makes it can prevent that the user is not used in the action of control graphical user interface, and promptly non-instruction manipulation is gathered and handled.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A kind of touch-screen system based on camera positioning, comprise: several cameras that are provided for gathering actuating signal, and be used to handle the signal collected processing module of camera, wherein: described several cameras comprise at least one the first group of camera that is arranged on the back side, target touch area and are arranged at least one second group of camera on surface, target touch area, this first group of camera is used to gather the hot spot actuating signal that projects the target touch area, and this second group of camera is used to gather the touch action signal that enters second group of camera camera watch region space; This system also comprises at least one switching device shifter in addition, and described processing module also determines that according to the instruction of this switching device shifter first group of camera still is second group of camera collection actuating signal.Above-mentioned hot spot actuating signal is meant that luminescent device projects the hot spot signal of target touch area, and the user both can be with devices such as light pens, also can be with other this effects of device time.Above-mentioned touch action is meant people's finger or the contactor control device that staff holds, pointer etc. for example, the action in second group of camera camera watch region space.
As one of improvement of the present invention: described switching device shifter comprises being used to launch to be set or the audio frequency emission element of fixed frequency audio frequency, and this system also comprises audio detection device, described processing module is used to also judge whether the sound signal that is received of this audio detection device is the sound signal that this audio frequency emission element is sent, thereby determines that first group of camera still is second group of camera collection actuating signal.
As two of improvement of the present invention: described audio frequency emission element is ultrasonic transmitter or hummer.
As three of improvement of the present invention: described switching device shifter also comprises luminous component, and the switch that is used for opening simultaneously or closing simultaneously this luminous component and described audio frequency emission element.When the switch open on the switching device shifter, audio frequency emission element and luminous component on it are worked simultaneously, and the hot spot actuating signal of this luminous component that described processing module will be gathered according to first group of camera is carried out corresponding operating to graphical interfaces; When the switch on arbitrary switching device shifter cuts out, audio frequency emission element and luminous component on it quit work simultaneously, and the touch action signal of the direct touching target touch area that described processing module will be gathered according to second group of camera carries out corresponding operating to graphical interfaces.That is to say, when opening switching device shifter, audio frequency emission element in the switching device shifter will send the sound wave of a certain setting or fixed-audio, and audio detection device is given processing module with detected audio signal transmission, processing module is enabled control first group of camera and is closed second group of camera after being confirmed to be the sound signal that switching device shifter sound intermediate frequency emission element sent.This moment, the user only needed the luminous component in the switching device shifter is radiated at the surface of target touch area, can carry out corresponding operating to graphic user interface.
As four of improvement of the present invention: this system comprises a plurality of switching device shifters, and the audio frequency difference of being launched of the audio frequency emission element on arbitrary switching device shifter.If plural switching device shifter is arranged, when sound signal that each switching device shifter sent was identical, the touch location that first group of camera taken all switching device shifters was finished multiple spot and is touched the location simultaneously; When sound signal that each switching device shifter sent not simultaneously, signs such as different wave that apparatus for receiving audio receives and time of reception, make processing module not only can discern the touch action of different felt pens, can also increase the anchor point number of positioning principle touch-screen behind the camera.
As five of improvement of the present invention: this system also comprises the infrared emission light pipe that is arranged on side, target touch area, also is provided with infrared fileter on described second group of camera.Under the environment of indoor light source or natural light, the difference instability of hot spot that user action forms in camera and background color.For this reason, the infrared emission light pipe is installed, is strengthened the felt pen light spot image by a lateral edges at camera.
Compared with prior art, the invention has the beneficial effects as follows: what the user can determine touch-screen system by switching device shifter is by the hot spot actuating signal of target approach touch area or by the touch action in the space, target approach touch area, controls drawing shape user interface.When system is in hot spot actuating signal pattern, system only can discern the hot spot actuating signal of target approach touch area, and other article that people's limbs or people hold can not be operated graphic user interface, thereby have prevented the inconvenience that user's non-instruction manipulation brings to the user.
Embodiment
Below technical scheme of the present invention is described further.
Touch-screen system based on camera positioning of the present invention comprises: be provided for gathering several cameras of actuating signal, and be used to handle the signal collected processing module of camera.Wherein:
Described several cameras comprise at least one the first group of camera that is arranged on the back side, target touch area and are arranged at least one second group of camera on surface, target touch area, this first group of camera is used to gather the hot spot actuating signal that projects the target touch area, and this second group of camera is used to gather the touch action signal that enters second group of camera camera watch region space.
This system also comprises at least one switching device shifter in addition, and described processing module also determines that according to the instruction of this switching device shifter first group of camera still is second group of camera collection actuating signal.
Wherein switching device shifter comprises the audio frequency emission element that is used to launch setting or fixed frequency audio frequency, and this system also comprises audio detection device.Processing module is used to also judge whether the sound signal that is received of this audio detection device is the sound signal that this audio frequency emission element is sent, thereby determines that first group of camera still is second group of camera collection actuating signal.If audio detection device detects the sound signal that switching device shifter sends, then processing module is moved first group of camera collection that control is positioned at rear, target touch area, stops second group of camera collection action simultaneously; The sound signal that if audio detection device does not detect switching device shifter to be sent, and this moment user's hand or hand-held other objects held of user enter into space, target touch area, after also being the shooting space of second group of camera, processing module will be controlled second camera head and continue to gather user actions signal, stop first group of camera collection action simultaneously.
In addition, audio frequency emission element of the present invention can adopt ultrasonic transmitter or hummer.Described in addition switching device shifter also comprises luminous component, and the switch that is used for opening simultaneously or closing simultaneously this luminous component and described audio frequency emission element.
In addition, can also there be a plurality of switching device shifters in system of the present invention, and the sound signal that the audio frequency emission element on arbitrary switching device shifter is launched is different.
In addition, system of the present invention can also be provided with the infrared emission light pipe in side, target touch area, also is provided with infrared fileter simultaneously on second group of camera.
Claims (5)
1. touch-screen system based on camera positioning, comprise: several cameras that are provided for gathering actuating signal, and be used to handle the signal collected processing module of camera, it is characterized in that: described several cameras comprise first group of camera that is arranged on the back side, target touch area and at least two second group of cameras that are arranged on surface, target touch area, this first group of camera is used to gather the hot spot actuating signal that projects the target touch area, and this second group of camera is used to gather the touch action signal that enters second group of camera camera watch region space; This system also comprises at least one switching device shifter in addition, and switching device shifter comprises the audio frequency emission element that is used to launch setting or fixed frequency audio frequency, and this system also comprises audio detection device; Processing module is used to also judge whether the sound signal that is received of this audio detection device is the sound signal that this audio frequency emission element is sent, thereby determines that first group of camera still is second group of camera collection actuating signal.
2. the touch-screen system based on camera positioning according to claim 1 is characterized in that: described audio frequency emission element is ultrasonic transmitter or hummer.
3. the touch-screen system based on camera positioning according to claim 2 is characterized in that: described switching device shifter also comprises luminous component, and the switch that is used for opening simultaneously or closing simultaneously this luminous component and described audio frequency emission element.
4. the touch-screen system based on camera positioning according to claim 3 is characterized in that: this system comprises a plurality of switching device shifters, and the audio frequency difference of being launched of the audio frequency emission element on arbitrary switching device shifter.
5. according to the arbitrary described touch-screen system based on camera positioning of claim 1 to 4, it is characterized in that: this system also comprises the infrared emission light pipe that is arranged on side, target touch area, also is provided with infrared fileter on described second group of camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103122052A CN101714044B (en) | 2009-12-24 | 2009-12-24 | Camera positioning-based touch screen system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103122052A CN101714044B (en) | 2009-12-24 | 2009-12-24 | Camera positioning-based touch screen system |
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| Publication Number | Publication Date |
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| CN101714044A CN101714044A (en) | 2010-05-26 |
| CN101714044B true CN101714044B (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009103122052A Expired - Fee Related CN101714044B (en) | 2009-12-24 | 2009-12-24 | Camera positioning-based touch screen system |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102701033A (en) * | 2012-05-08 | 2012-10-03 | 华南理工大学 | Elevator key and method based on image recognition technology |
| CN102789335B (en) * | 2012-07-11 | 2015-07-08 | 广东威创视讯科技股份有限公司 | Processing method of touch writing track |
| CN103135805B (en) * | 2013-02-05 | 2016-01-06 | 深圳市中科睿成智能科技有限公司 | A kind of switched system of project near point control and Long-distance Control and method |
| CN103425357A (en) * | 2013-09-04 | 2013-12-04 | 北京汇冠新技术股份有限公司 | Control system of optical touch screen |
| CN104215846B (en) * | 2014-08-22 | 2016-12-07 | 深圳市威富多媒体有限公司 | A kind of test system of electromagnetic screen |
| CN106899765A (en) * | 2017-03-10 | 2017-06-27 | 上海传英信息技术有限公司 | Mobile terminal dual camera changing method and device |
| CN106873789B (en) * | 2017-04-20 | 2020-07-07 | 歌尔科技有限公司 | Projection system |
| CN108363485B (en) * | 2018-01-25 | 2021-06-18 | 广州杰赛科技股份有限公司 | Control method, device and system of non-touch screen display terminal and computer equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2713761Y (en) * | 2004-07-26 | 2005-07-27 | 上海现代教学科技研究所 | Double video frequency interactive teaching exhibiting instrument |
| CN101237556A (en) * | 2008-03-03 | 2008-08-06 | 宇龙计算机通信科技(深圳)有限公司 | Realization method, image display method and communication terminal for terminal with dual cameras |
| CN101344827A (en) * | 2008-08-22 | 2009-01-14 | 李兴文 | Optical touch screen and touch pen |
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2009
- 2009-12-24 CN CN2009103122052A patent/CN101714044B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2713761Y (en) * | 2004-07-26 | 2005-07-27 | 上海现代教学科技研究所 | Double video frequency interactive teaching exhibiting instrument |
| CN101237556A (en) * | 2008-03-03 | 2008-08-06 | 宇龙计算机通信科技(深圳)有限公司 | Realization method, image display method and communication terminal for terminal with dual cameras |
| CN101344827A (en) * | 2008-08-22 | 2009-01-14 | 李兴文 | Optical touch screen and touch pen |
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| CN101714044A (en) | 2010-05-26 |
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Address after: Kezhu road high tech Industrial Development Zone, Guangzhou city of Guangdong Province, No. 233 510670 Patentee after: Wei Chong group Limited by Share Ltd Address before: 510663 No. 6, color road, hi tech Industrial Development Zone, Guangdong, Guangzhou, China Patentee before: Guangdong Weichuangshixun Science and Technology Co., Ltd. |
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Granted publication date: 20111109 Termination date: 20191224 |
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