HUFFMAN CODING METHOD BASED ON NUMBER CHARACTER
This paper presents a new Huffman coding method based on number character.The traditional 256 code table is replaced by the 0～9 character, the space character and the enter character in this method.Meanwhile it illustrates that the value of entropy has close relations with the probability model of signal; that the same signal has various entropies under different models; and that the probability model of signal which makes the entropy smaller can provide bigger compression space.Moreover this approach not only reduces the size of traditional Huffman code table but also enhances the compression ratio of the image data to some extent.A large number of experimental data from random online traffic images indicate that absolutely the Huffman code table can be controlled below 40bit, while the coding efficiency can be upwards of 95％ and the compression ratio will exceed 60％.
Huffman coding Number character coding table Image compression
BEI CHEN HONG-CAI ZHANG WEN-LUN CAO JIAN-HU FENG
School of Automation, Northwestern Polytechnical University, Xian 710072, PR.CHINA School of Computer Science and Engineering, Xian University of Technology, Xian 710048, PR.CHINA College of Science, Changan University, Xian 710061, PR.CHINA
国际会议
2007 International Conference on Machine Learning and Cybernetics(IEEE第六届机器学习与控制论国际会议)
香港
英文
2296-2299
2007-08-19（万方平台首次上网日期，不代表论文的发表时间）