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Journal of Information Science and Engineering, Vol. 27 No. 2, pp. 621-642 (March 2011)

Method of Lossless and Near-Lossless Color Image Compression*

GRZEGORZ ULACHA
Department of Computer Science
West Pomeranian University of Technology
Zolnierska 49
71-210 Szczecin, Poland

In this paper, it is presented a detailed description of a proposal of an effective image encoder suitable for hardware realizations. A modelling block based on the blending prediction method and an encoding block performing a contextual, adaptive arithmetic encoding are proposed. The encoding operation in both lossless and near-lossless modes are described. It is analyzed how to lossless transform colours to obtain the best solution. An effectiveness analysis is also done by comparison of the compression rate of the proposed method with another hardware realization and a number of software implementations known from literature. Some suggestions are made regarding the implementation of the algorithm as the video sequence encoding system working in the real-time utilizing an efficient Network on Chip architecture.

Keywords: lossless/near-lossless image coding, predictor blending, prediction error bias correction, adaptive context arithmetic coder, color transformation

Full Text () Retrieve PDF document (201103_14.pdf)

Received April 13, 2009; revised June 12, 2009; accepted August 28, 2009.
Communicated by H. Y. Mark Liao.
* The research work presented in this paper was partially sponsored by Polish Ministry of Science and Higher Education (2011-2014).