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Proceedings Paper

Rate-controlled region-of-interest-based image coding with JPEG-LS
Author(s): Eran Anusha Edirisinghe; Satish Bedi
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Paper Abstract

Since the standardization of JPEG-LS, several improvements and variations to the original algorithms have been proposed. In this paper we propose a Region of Interest (ROI) based coding strategy for JPEG-LS that has the additional ability of providing effective rate controlled image compression. Given a single ROI or multiple ROIs of a fixed or arbitrary shape, the scheme we propose is able to compress a given image by a required ratio, while maintaining the subjective image of the ROIs at either lossless or at a quality specified by a Target Compression Ratio (TRC) of the ROI. We provide experimental results to compare the performance of the proposed rate-control algorithm with the state of the art near lossless rate control schemes. We show that the proposed scheme is able to achieve much higher TCRs, at increased accuracy and better objective image quality, using a less computationally intensive rate control algorithm. Finally we demonstrate that the proposed ROI based coding scheme can be used to extend the applicability of JPEG-LS to medical and satellite imaging applications and provides a useful alternative to JPEG-2000 based ROI coding.

Paper Details

Date Published: 7 May 2003
PDF: 8 pages
Proc. SPIE 5022, Image and Video Communications and Processing 2003, (7 May 2003); doi: 10.1117/12.476372
Show Author Affiliations
Eran Anusha Edirisinghe, Loughborough Univ. (United Kingdom)
Satish Bedi, Loughborough Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 5022:
Image and Video Communications and Processing 2003
Bhaskaran Vasudev; T. Russell Hsing; Andrew G. Tescher; Touradj Ebrahimi, Editor(s)

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