An online preprocessing technique for improving the lossless compression of images with sparse histograms
Armando J. Pinho · IEEE Signal Processing Letters · 2002
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.