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	Geometric-invariant image watermarking by object-oriented embedding
Author	Yu-Tzu Lin, Ja-Ling Wu, Yu-Feng Kuo
Citation	Vol. 6  No. 3  pp. 175-186
Keywords	Watermarking, geometric attacks, affine-resistance, image normalization, blind watermarking.

Title	Geometric-Invariant Image Watermarking by Object-Oriented Embedding
Author	Yu-Tzu Lin, Ja-Ling Wu, Yu-Feng Kuo
Citation	Vol. 6  No. 3  pp. 169-180
Keywords	Watermarking, geometric attacks, affine-resistance, image normalization, blind watermarking.

Title	A Blind Chaos-Based Complex Wavelet-Domain Image Watermarking Technique
Author	S. Mabtoul, E. Ibn-Elhaj, D. Aboutajdine
Citation	Vol. 6  No. 3  pp. 134-139
Keywords	Image watermarking, chaos, dual tree complex wavelet transform, spread spectrum.