Title：Projection type man-machine interactive system and touch control identification method
Country：China
Patent No.：201310210406.8
Legal Status：Authorized
Inventor：Jun Hu, Ang Li, Yanjun Han, Guolin Li, Xiang Xie, Zhong Lv, Wei Song, Lifei Ren, Yi Zheng, Zhihua Wang
Assignee：Tsinghua University
Address：Mailbox No. 82, Beijing 100084
Filing Date：2013-05-30
Issue Date：2016-02-24
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.
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