Near-lossless image compression techniques

Rashid Ansari; Ersan Ceran; Nasir D. Memon

doi:10.1117/12.298385

9 January 1998 Near-lossless image compression techniques

Rashid Ansari, Ersan Ceran, Nasir D. Memon

Proceedings Volume 3309, Visual Communications and Image Processing '98; (1998) https://doi.org/10.1117/12.298385
Event: Photonics West '98 Electronic Imaging, 1998, San Jose, CA, United States

Abstract

Methods of near-lossless image compression based on the criterion of maximum allowable deviation of pixel values are described in this paper. Predictive and multi resolution techniques for performing near-lossless compression are investigated. A procedure for near-lossless compression using a modification of lossless compression are investigated. A procedure for near-lossless compression using a modification of lossless predictive coding techniques to satisfy the specified tolerance is descried. Simulation results with modified versions of two of the best lossless predictive coding techniques known, CALIC and JPEG- LS, are provided. It is shown that the application of lossless coding based on reversible transforms in conjunction with pre-quantization is inferior to predictive techniques for near-lossless compression. A partial embedding two-layer scheme is proposed in which an embedded multi-resolution coder generates a lossy base layer, and a simple but effective context-based lossless coder codes the difference between the original image and the lossy reconstruction. Simulation results show that this lossy plus-lossless technique yields compression ratios very close to those obtained with predictive techniques, while providing the feature of a partially embedded bit-stream.

Citation Download Citation

Rashid Ansari, Ersan Ceran, and Nasir D. Memon "Near-lossless image compression techniques", Proc. SPIE 3309, Visual Communications and Image Processing '98, (9 January 1998); https://doi.org/10.1117/12.298385

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