Title	Image retrieval based on RST-invariant features
Author	Zhe-Ming Lu, Dan-Ni Li, Hans Burkhardt
Citation	Vol. 6  No. 2  pp. 169~174
Keywords	Image retrieval, invariant features, RST invariant features, log-polar transformations.

Title	A Lossless Watermarking Scheme for Halftone Image Authentication
Author	Jeng-Shyang Pan, Hao Luo, Zhe-Ming Lu
Citation	Vol. 6  No. 2  pp. 147~151
Keywords	Halftone image, Lossless watermarking, Hash sequence, Image authentication