Towards an improvement on prediction accuracy in JPEG-LS

Jianmin Jiang; Christos Grecos

doi:10.1117/1.1428743

1 February 2002 Towards an improvement on prediction accuracy in JPEG-LS

Jianmin Jiang, Christos Grecos

Optical Engineering, Vol. 41, Issue 2, (February 2002). https://doi.org/10.1117/1.1428743

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.

©(2002) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Jianmin Jiang and Christos Grecos "Towards an improvement on prediction accuracy in JPEG-LS," Optical Engineering 41(2), (1 February 2002). https://doi.org/10.1117/1.1428743

Published: 1 February 2002

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