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Optical Engineering

Towards an improvement on prediction accuracy in JPEG-LS
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Paper Abstract

Among a context of three pixels, the present JPEG-LS produces predicted values based on whether a vertical edge or a horizontal edge is detected. When a diagonal edge exists, however, experiments and observation reveal that such a prediction will generate large predictive errors. By applying the triangle inequality to the analysis of predictive templates in JpEG-LS, we propose a diagonal-edge detection scheme to reduce the predictive error and hence provide an improvement on the prediction accuracy. Experiments are carried out to test the proposed scheme for a group of sample images. In comparison with the current JPEG-LS prediction, our scheme produces lower prediction errors, in terms of both MSE measurement and visual comparison of error images.

Paper Details

Date Published: 1 February 2002
PDF: 7 pages
Opt. Eng. 41(2) doi: 10.1117/1.1428743
Published in: Optical Engineering Volume 41, Issue 2
Show Author Affiliations
Jianmin Jiang, Univ. of Glamorgan (United Kingdom)
Christos Grecos, Robert Gordon Univ. (United Kingdom)

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