Research On Application Of Binocular Stereovision For Multi-touch Technology

Stereo vision is a computer visual field of the important topic, its purpose is to reconstruct 3d geometry information scene. Stereo vision in robot navigation system, aviation and remote sensing measurement, military applications, industrial automation, has broad applications, so for stereo vision research has the extremely vital significance. Binocular stereo vision is stereoscopic vision an important branch. Stereo binocular visual theory is in simulation of human visual system built on the basis of study. For binocular stereo vision research, mainly includes the camera calibration, feature detection, three-dimensional matching and 3d reconstruction aspects of content. This thesis adopted binocular stereo vision technology to realize more touch, the main research for camera calibration, feature extraction and touch point tracking, multipoint touch system design aspects of content, mainly done as follows:first, analyzed the binocular stereo vision and more touch technology, the research situation of research work for this paper laid a foundation. Secondly, mainly introduced the Zhang YouZheng camera calibration principle, then the camera calibration experiment, in theory and experiment is obtained on the basis of internal and external parameters, binocular camera more important is through the calibration principle deduced touch conversion formula. Again, the stereo binocular vision technology will be a calibration method applied to the touch, through multipoint image processing method point to touch feature extraction and then calculate touch point coordinates, and tracking results show that this method can effectively solve the shade problem, can touch points than four contacts support the precise positioning. This also is this topic innovative points.Thesis uses vc++, OpenCV algorithm programming for the experiment.