Open AccessA novel approach to sparse histogram image lossless compression using JPEG2000
Author(s) -
Marco Aguzzi,
Maria Grazia Albanesi
Publication year - 2006
Publication title -
elcvia. electronic letters on computer vision and image analysis
Language(s) - English
Resource type - Journals
ISSN - 1577-5097
DOI - 10.5565/rev/elcvia.116
Subject(s) - lossless compression , jpeg 2000 , computer science , histogram , artificial intelligence , image compression , jpeg , lossy compression , computer vision , pattern recognition (psychology) , pixel , image (mathematics) , data compression , image processing
In this paper a novel approach to the compression of sparse histogram images is proposed. First, we define a sparsity index which gives hints on the relationship between the mathematical concept of matrix sparsity and the visual information of pixel distribution. We use this index to better understand the scope of our approach and its preferred field of applicability, and to evaluate the performance. We present two algorithms which modify one of the coding steps of the JPEG2000 standard for lossless image compression. A theoretical study of the gain referring to the standard is given. Experimental results on well standardized images of the literature confirm the expectations, especially for high sparse images