Title :
Directional watermarks in images
Author :
Chao, Her-Chang ; Tai, Cheng-Lun ; Chen, Yuan-Peir
Author_Institution :
Dept. of Comput. Sci. & Inf. Eng., Ming Chuan Univ., Taoyuan, Taiwan
Abstract :
A new watermark scheme based on directional filter banks and wavelet subband decomposition techniques is proposed. In order to embed the mark into the directional subband images, a projection classification algorithm is presented. These subband images with a particular directional property can prevent unauthorized use attacks.
Keywords :
channel bank filters; image coding; transform coding; watermarking; wavelet transforms; directional filter banks; directional subband images; directional watermarks; frequency domain embedding scheme; projection classification algorithm; wavelet subband decomposition; Chaos; Classification algorithms; Computer science; Filter bank; Frequency domain analysis; Frequency synthesizers; Protection; Sampling methods; Testing; Watermarking;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465506
