Intelligent electronic whiteboard system and light spot position extraction method based on intelligent electronic whiteboard system
An electronic whiteboard and intelligent technology, applied in the direction of electronic digital data processing, instrumentation, data processing input/output process, etc., can solve the problems of unfavorable classroom content expression, high note positioning delay, low handwriting positioning accuracy, etc., to achieve enhanced anti- The effect of interference ability, large monitoring area, and easy positioning
Inactive Publication Date: 2012-06-13
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
Traditional multimedia teaching equipment is mainly based on PCs. Teachers need to use mouse devices when operating PCs in the classroom, which is not conducive to the expression of classroom content.
The existing whiteboards have the disadvantages of high price, low handwriting positioning accuracy, and high note positioning delay
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[0032] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
[0033] Such as figure 1 As shown, the intelligent electronic whiteboard system designed by the present invention includes an infrared laser writing pen, a projection screen, a cold light projector, an infrared camera with an infrared filter, and a PC; wherein, the infrared laser writing pen and the cold light projector are respectively located at the projection On the same side of the screen, the infrared camera is located on the other side of the projection screen, and also includes a video signal acquisition system. The infrared camera is connected to the input end of the PC through the video signal acquisition system, and the output end of the PC is connected to the cold light projector.
[0034] In a specific embodiment, the camera and the projector are placed on both sides of the screen respectively, and the distance between the screen and the...
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The invention discloses an intelligent electronic whiteboard system. The intelligent electronic whiteboard system comprises an infrared laser writing pen, a projection curtain, a cold light projector, an infrared camera with an infrared filter, a video signal acquisition system and a personal computer (PC), wherein the infrared laser writing pen and the cold light projector are respectively positioned on the same side of the projection curtain; the infrared camera is positioned on the other side of the projection curtain; the infrared camera is connected with an input end of the PC through the video signal acquisition system; and an output end of the PC is connected with the cold light projector. The invention also discloses a light spot position extraction method based on the intelligent electronic whiteboard system. The invention has the advantages of low cost, high handwriting positioning accuracy, low handwriting positioning delay and good writing effect.
Description
technical field [0001] The invention relates to an intelligent electronic whiteboard system, in particular to an intelligent electronic whiteboard system based on infrared laser technology and a method for extracting light spot positions thereof. Background technique [0002] Multimedia teaching has been popularized in colleges and universities and even primary and secondary schools. This teaching method makes the course content richer and more vivid, easy for students to absorb, and greatly improves classroom efficiency. Traditional multimedia teaching equipment is mainly based on PCs, and teachers need to use mouse devices when operating PCs in the classroom, which is not conducive to the expression of classroom content. The existing whiteboards have the disadvantages of high price, low handwriting positioning accuracy, and high note positioning delay. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an infrare...
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Inventor 高翔邱其文徐国政周云城
Owner NANJING UNIV OF POSTS & TELECOMM