From LOCO-I to the JPEG-LS standard

Journal Article

LOCO-I (LOw COmplexity LOssless COmpression for Images) is the algorithm at the core of the new ISO/ITU standard for lossless and near-lossless compression of continuous-tone images, JPEG-LS. The algorithm was conceived as a `low complexity projection' of the universal context modeling paradigm, matching its modeling unit to a simple coding unit based on Golomb codes. The JPEG-LS standard evolved after successive refinements of the core algorithm, and a description of its design principles and main algorithmic components is presented in this paper. LOCO-I/JPEG-LS attains compression ratios similar or superior to those obtained with state-of-the-art schemes based on arithmetic coding. Moreover, it is within a few percentage points of the best available compression ratios, at a much lower complexity level.

Duke Authors

Cited Authors

  • Weinberger, MJ; Seroussi, G; Sapiro, G

Published Date

  • 1999

Published In

  • IEEE International Conference on Image Processing

Volume / Issue

  • 4 /

Start / End Page

  • 68 - 72