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An Efficient Compression of Amplitude-Only Images for the Image Trading System
Shenchuan LIU Wannida SAE-TANG Masaaki FUJIYOSHI Hitoshi KIYA
IEICE TRANSACTIONS on Information and Systems
Publication Date: 2014/02/01
Online ISSN: 1745-1361
Print ISSN: 0916-8532
Type of Manuscript: LETTER
Category: Image Processing and Video Processing
digital fingerprinting, trusted third party, random phase flipping, quantization, JPEG 2000,
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This letter proposes an efficient compression scheme for the copyright- and privacy-protected image trading system. The proposed scheme multiplies pseudo random signs to amplitude components of discrete cosine transformed coefficients before the inverse transformation is applied. The proposed scheme efficiently compresses amplitude-only image which is the inversely transformed amplitude components, and the scheme simultaneously improves the compression efficiency of phase-only image which is the inversely transformed phase components, in comparison with the conventional systems.