A Unified Coding Algorithm of Lossless and Near-Lossless Color Image Compression(Special Section on Intelligent Signal and Image Processing)

概要

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This paper describes a unified coding algorithm for lossless and near-lossless color image compression that exploits the correlations between RGB signals.A reversible color transform that removes the correlations between RGB signals while avoiding any finite word length limitation is proposed for the lossless case.The resulting algorithm gives higher performance than the lossless JPEG without the color transform.Next, the lossless algorithm is extended to a unified coding algorithm of lossless and near-lossless compression schemes that can control the level of the reconstruction error on the RGB plane from 0 to ±p, where p is a certain small non-negative integer.The effectiveness of this algorithm was demonstrated experimentally.
社団法人電子情報通信学会の論文
2000-02-25