Research Article
Calibration of the Camera Used in a Questionnaire Input System by Computer Vision
Department of Occupational Safety and Health, Chang Jung Christian University, No. 396, Sec. 1, Changrong Road, Gueiren District, Tainan City 71101, Taiwan, Republic of China
Su-Hsing Lee
Department of Occupational Safety and Health, Chang Jung Christian University, No. 396, Sec. 1, Changrong Road, Gueiren District, Tainan City 71101, Taiwan, Republic of China
Chao-Lin Kuo
Institute of Maritime Information and Technology, National Kaohsiung Marine University, No. 482, Jhongjhou 3rd Road, Cijin District, Kaohsiung City 80543, Taiwan, Republic of China