Lossless Image Compression Based on Multiple-Tables Arithmetic Coding

Author:

Chen Rung-Ching1,Pai Pei-Yan2,Chan Yung-Kuan3,Chang Chin-Chen24

Affiliation:

1. Department of Information Management, Chaoyang University of Technology, No. 168, Jifong E. Rd., Wufong Township Taichung County 41349, Taiwan

2. Department of Computer Science, National Tsing-Hua University, No. 101, Section 2, Kuang-Fu Road, Hsinchu 300, Taiwan

3. Department of Management Information Systems, National Chung Hsing University, 250 Kuo-kuang Road, Taichung 402, Taiwan

4. Department of Information Engineering and Computer Science, Feng Chia University, No. 100 Wenhwa Rd., Seatwen, Taichung 407, Taiwan

Abstract

This paper is intended to present a lossless image compression method based on multiple-tables arithmetic coding (MTAC) method to encode a gray-level imagef. First, the MTAC method employs a median edge detector (MED) to reduce the entropy rate off. The gray levels of two adjacent pixels in an image are usually similar. A base-switching transformation approach is then used to reduce the spatial redundancy of the image. The gray levels of some pixels in an image are more common than those of others. Finally, the arithmetic encoding method is applied to reduce the coding redundancy of the image. To promote high performance of the arithmetic encoding method, the MTAC method first classifies the data and then encodes each cluster of data using a distinct code table. The experimental results show that, in most cases, the MTAC method provides a higher efficiency in use of storage space than the lossless JPEG2000 does.

Publisher

Hindawi Limited

Subject

General Engineering,General Mathematics

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