Vision based pointing device with slight body movement

It is widely acknowledged that computer is powerful tool to improve the quality of life of the people with disability. One problem is how the user manipulates the computer using suitable input device designed for him or her. This paper proposes tow pointing devices based on vision for the people with disability as input devices. These devices detect the position of the marks attached on the users head. According to the head movements, computer cursor on the computer display is moved in two-dimensionally. A distinct advantage of these devices is that various strategies could be installed based on the situation of the users. The pointing device was applied to a drawing tool of the painting software for an patients successfully.