Title	Ridgelet-Based Robust and Perceptual Watermarking for Images
Author	Xiao Liang, Wei Zhihui, Wu Huizhong
Citation	Vol. 6  No. 2  pp. 194~201
Keywords	Information security, digital watermark, ridgelet transform, perceptual embedding, blindly detection

Title	An Extensive Method to detect the Image Digital Watermarking based on the Known Template
Author	Feng Yang, Luo Senlin, Pan Limin
Citation	Vol. 6  No. 3  pp. 110-114
Keywords	digital watermarking; extensive detection; correlative detection

Title	Watermark Embedded in Polygonal Line for Copyright Protection of Contour Map
Author	Xu Zhou, Yu Ren, Xuezeng Pan
Citation	Vol. 6  No. 7  pp. 202-205
Keywords	Digital watermark, Contour map, Polygonal line, Parameterized circle, Hypothesis test

Title	A Novel Image Scrambling Algorithm for Digital Watermarking Based on Chaotic Sequences
Author	Zhu Liehuang, Li Wenzhuo, Liao Lejian, Li Hong
Citation	Vol. 6  No. 8  pp. 125-130
Keywords	Image Scrambling, Digital Watermarking, Chaotic Sequences, Cat Mapping.