IMPROVED LOSSLESS IMAGE CODER BASED ON SUBOPTIMAL, ADAPTIVE MULTIPLICATIVE AUTOREGRESSIVE MODELS

Authors
DAS M
Citation
M. Das, IMPROVED LOSSLESS IMAGE CODER BASED ON SUBOPTIMAL, ADAPTIVE MULTIPLICATIVE AUTOREGRESSIVE MODELS, Electronics Letters, 34(21), 1998, pp. 2019-2021
Citations number
7
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
Electronics Letters → ACNP
ISSN journal
00135194
Volume
34
Issue
21
Year of publication
1998
Pages
2019 - 2021
Database
ISI
SICI code
0013-5194(1998)34:21<2019:ILICBO>2.0.ZU;2-O
Abstract
An improved lossless image coder is introduced which is based on subop timal, adaptive multiplicative autoregressive models. Basically the im provements result from the incorporation of three new elements: a back ward block-by-block parameter estimator, a probability model for the r esiduals, and a contextual entropy coder. The results of a comparative experimental study indicate that on average the improved coder delive rs similar to 7% higher compression than the old scheme.