joseph_bpcs - Bit-Plane Complexity Steganography Joseph...

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Unformatted text preview: Bit-Plane Complexity Steganography Joseph Szigeti (source list) Overview Why BPCS was developed How it works Several implementations Kawaguchi, Eason Beaullieu, Crissey, Smith Stoleru Results Possible improvements Steganography Hiding a secret message by embedding it in data Different from: Cryptography Scrambling a secret message such that the message is not hidden, but simply unreadable Watermarking Embedding copyright/ownership information inside data Bit-Plane Complexity Steganography BPCS Invented by Eiji Kawaguchi and Richard Eason in 1997 Kyushu Institute of Technology University of Maine Created because traditional forms of steganography were limited in information- hiding capacity Estimated at 10% Old Steganography vs. BPCS Old stego. Replace small frequency components of vessel data Replace LSB of vessel data BPCS Separate vessel into bit-planes Replace noisy regions in bit-planes with secret data Does not deteriorate quality Works because of limitations in human vision Visualization of BPCS Visualization of BPCS Kawaguchi & Easons Findings Information-hiding capability is 50% Sharpening operations on vessel image increase embedding capacity significantly Canonical Gray coded bit-planes are better than binary bit-planes...
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joseph_bpcs - Bit-Plane Complexity Steganography Joseph...

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