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Proceedings Paper

Achieving idempotence in near-lossless JPEG-LS
Author(s): Lyman Hurd; Jose Gerardo Rosiles
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Paper Abstract

The lossless and near-lossless image compression standard, JPEG-LS, while offering state-of-the-art compression performance with low complexity, fails to be idempotent in near-lossless mode (i.e., images degrade upon successive compression/decompressions). This paper identifies the cause and presents two solutions. First it presents a modification to the compressor and decompressor that maintains or improves the error bounds and achieves idempotence. Second it describes a preprocessor that acts upon any image and returns one upon which JPEG-LS does perform idempotently at the expense of doubling the guaranteed error bound on a small subset of pixels (typically below 0.5%).

Paper Details

Date Published: 19 April 2000
PDF: 6 pages
Proc. SPIE 3974, Image and Video Communications and Processing 2000, (19 April 2000); doi: 10.1117/12.383004
Show Author Affiliations
Lyman Hurd, Iterated Systems, Inc. (United States)
Jose Gerardo Rosiles, Georgia Institute of Technology (United States)

Published in SPIE Proceedings Vol. 3974:
Image and Video Communications and Processing 2000
Bhaskaran Vasudev; T. Russell Hsing; Andrew G. Tescher; Robert L. Stevenson, Editor(s)

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