國立臺灣師範大學圖文傳播學系Jiun-Yi LiTzren-Ru ChouHsi-Chun Wang2014-10-302014-10-302003-08-19http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/36702Multi-channel watermarking technique for printed images and its application to personalized stamps