Encyclopedia of graphics file formats (2nd ed.)
Encyclopedia of graphics file formats (2nd ed.)
Simplified Approach to Image Processing: Classical and Modern Techniques in C
Simplified Approach to Image Processing: Classical and Modern Techniques in C
On ordering color maps for lossless predictive coding
IEEE Transactions on Image Processing
A novel approach for coding color quantized images
IEEE Transactions on Image Processing
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This paper proposes a brand-new preprocessing scheme using the ranking of co-occurrence count about indices in neighboring pixels. Original indices in an index image are substituted by their ranks. Arithmetic coding, then, is followed. Using this proposed algorithm, a better compression efficiency can be expected with higher data redundancy because the indices of the most pixels are concentrated to the relatively few rank numbers. Experimental results show that the proposed algorithm achieves a better compression performance up to 26–48% over GIF, arithmetic coding and Zeng's scheme.