Security, steganography, and watermarking of multimedia contents. pp.663-669, 2004. San Jose, Ca.. SPIE - The International Society of Optical Engineering
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Color imaging VIII : processing, hardcopy, and applications : 21-24 January 2003, Santa Clara, California, USA. pp.328-340, 2003. Bellingham, Wash., USA. SPIE-The International Society for Optical Engineering
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