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Projection type man-machine interactive system and touch control identification method

A human-computer interaction and identification method technology, applied in the field of human-computer interaction, can solve the problems of high 3D reconstruction complexity, affecting the quality of image display, and inapplicability to real-time human-computer interaction systems, etc., to improve detection accuracy and computational complexity. Small, fast effects

Active Publication Date: 2013-09-04
TSINGHUA UNIV
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AI Technical Summary

Problems solved by technology

However, the projection of structured light will affect the display quality of the image, and the complexity of 3D reconstruction is high, which is not suitable for real-time human-computer interaction system

Method used

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  • Projection type man-machine interactive system and touch control identification method
  • Projection type man-machine interactive system and touch control identification method
  • Projection type man-machine interactive system and touch control identification method

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Embodiment Construction

[0035] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] The embodiment of the present invention discloses a projected human-computer interaction system based on a single camera, such as figure 1 As shown, the human-computer interaction system is composed of a projection module 103 , an image acquisition module 104 and a control and processing module 102 .

[0037] The projection module 103, as an output display device of the interactive system, projects the man-machine interface onto the physical plane (such as desktop, wall, ground, etc.) in daily life. The projection module can be a projector based on technologies such as DLP, LCoS, LCD, and Laser.

[0038] The image collection module 104 can monitor the human-comput...

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PUM

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Abstract

The invention relates to the field of man-machine interactive technology, in particular to a projection type man-machine interactive system and a touch control identification method. The touch control identification method comprises the step of mapping homography and extracting an area of interest, namely an image shot by a camera is mapped onto an image plane of a projector and a key marginal area is extracted, detecting the shape change of a key, namely the edge of the key is detected in the area of interest and the marginal deviation Hoffset on the finger tip is calculated, and judging the touch control, namely the fact whether the finger tip is in contact with the projection plane is judged through the detected key marginal deviation. The touch control identification method has the advantages of being high in identification speed, high in accuracy, high in robustness and the like.

Description

technical field [0001] The present invention relates to the field of human-computer interaction technology, in particular to a projected human-computer interaction system and a touch recognition method. Background technique [0002] At present, most portable electronic devices (such as mobile phones, tablet computers, etc.) use liquid crystal displays (LCDs) as the main output device of the human-machine interface. Due to the limitation of the size of the portable electronic device itself, the display screens are relatively small, which is not convenient for the user to perform human-computer interaction on the interface. For example, the virtual keyboard keys on smartphones such as the iPhone are relatively small and compact, and users feel constrained when using them, and it is easy to click the wrong key, which greatly affects the speed and comfort of human-computer interaction. If a large-size display screen is used, on the one hand, high-quality display images can be o...

Claims

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Application Information

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IPC IPC(8): G06F3/041G06F3/0488
Inventor 胡军李昂韩衍隽李国林谢翔吕众宋玮任力飞郑毅王志华
Owner TSINGHUA UNIV
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