Title :
An online preprocessing technique for improving the lossless compression of images with sparse histograms
Author :
Pinho, Armando J.
Author_Institution :
Dept. de Electronica e Telecomunicacoes, Instituto de Engenharia Electronica e Telematica de Aveiro (IEETA), Portugal
Abstract :
This article addresses the problem of improving the efficiency of lossless compression of images with sparse histograms. An online preprocessing technique is proposed, which, although very simple, is able to provide significant improvements in the compression ratio of the images that it targets and shows a good robustness on other images.
Keywords :
ISO standards; adaptive signal processing; code standards; data compression; image coding; online operation; telecommunication standards; ISO/ITU standards; JPEG-2000; JPEG-LS; compression ratio; embedded image-domain adaptive compression; lossless image compression; online preprocessing; sparse histograms; Codecs; Discrete wavelet transforms; Error correction; Histograms; Image coding; Performance loss; Rate-distortion; Robustness; Standardization; Transform coding;
Journal_Title :
Signal Processing Letters, IEEE
