Development of Finger Touch Position Detection System Methods Using Single Camera

We propose a new image processing-based finger touch position detection sensing method using a reflected image reflected on the screen. Using single camera by image processing to detect touch position has several significant advantages: (1) Installation of camera becomes easily (2) This system can reduce the failure rate to realize maintenance free operation. (2) This approach enables easy attachment and low-cost touch sensing. The problem when using single camera is impossible to detect the depth of the finger from capture image. In order to solve this problem, we use the reflected image of the finger appears on 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 to extract fingertip and reflected image, implementation details, results of evaluation experiment, and outline future works.