IIAE CONFERENCE SYSTEM, The 2nd International Conference on Industrial Application Engineering 2014 (ICIAE2014)

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Development of Single Camera Finger Touch Position Coordinate Transform Algorithm
Shenjing Chen, Lifeng Zhang, Seiichi Serikawa

Last modified: 2014-10-01


This paper has focused on Image processing-based touch sensing systems using new methods. Image processing based single camera figure touch position detection approach has several significant advantages: (1) this method need not extra sensing instruments on the surface or under side of touch screen like resistive membrane-based systems and capacitive-based sensing systems. (2) this approach can convert non-touch screen into touch screen by only attaching cameras on the screen. (3) this approach enables various operations not only by touch but also by gesture operations. The most characteristic point of our system is using only single camera. Using a single view camera, we cannot get the depth information from a single view image. To solve this problem, we use the reflected finger image appears on the back of the screen. Detecting the fingertip and the reflected image on the screen effectively, we enable to detect touch position only using single camera. In this paper, we provide concrete method, algorithm, implement details, and several experimental results.




Finger detection, Finger tracking, Image processing, Computer vision, Touch panel

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