Gradient Adjusted Predictor with Pseudo-Distance Technique for Lossless Compression of Color-Mapped Images
Frontiers of Information Technology (2011)
Dec. 19, 2011 to Dec. 21, 2011
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/FIT.2011.58
Color-mapped images are widely used in many applications. Unlike most of the color-mapped image compression techniques, which require two passes, the pseudo-distance compression technique requires one pass and runs in linear time. Recently, we showed that when a structured arithmetic coder is used, after a color-mapped image is transformed with a pseudo-distance technique, better compression gains can be achieved over GIF and Huffman coder. In this work, we show that further compression gains are possible when a Gradient Adjusted Predictor is employed along with the pseudo-distance technique.
GAP, Index-based Images, Lossless Compression, Pseudo-distance, Arithmetic Coder
Basar Koc, Ziya Arnavut, "Gradient Adjusted Predictor with Pseudo-Distance Technique for Lossless Compression of Color-Mapped Images", Frontiers of Information Technology, vol. 00, no. , pp. 275-280, 2011, doi:10.1109/FIT.2011.58