图象的矩形变换矢量量化编码法
A METHOD OF IMAGE VECTOR QUANTIZATION CODING USING RECTANGULAR TRANSFORM
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摘要: 本文介绍了简单、实用的矩形变换和近几年来迅速发展的矢量量化技术.并把矩形变换和矢量量化技术结合在一起应用于图象的数据压缩.这种结合降低了矢量编码的维数,相应的码书尺寸能适当的得到减小.此方法加快了矢量编码的进程,减少了存贮量,编码率得到进一步减小.计算机模拟实验证明这种方法对图象的数据压缩是非常有效的.Abstract: A simple and practical rectangular transform and the vector quantization technique are described. A method for image data compression by combining the rectangular transform with vector quantization technique is presented. By using this method, the dimension of vector coding and the size of the corresponding codebook are reduced; the vector encoding process is picked up; and also the coding rate is reduced. The results of simulation show that this coding method is very effective in the field of image coding.
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姚庆栋等编著,图象编码基础,人民邮电出版社,北京,1984年,第六章.[2]K. Sivaraman, K.P.Rajappan, Signal Processing, 5(1983)4, 377-383.[3]T. S. Huang, Picture Processing and Digital Filtering, New York, 1979, Chapter 2.[4] Robert M. Gray, Vector Quantization, IEEE Trans. on ASSP, ASSP-32(1984)4, 4-29.[4]Y. Linde, A.Buzo, and R.M. Gray,An Algorithm for Vector Quantizer Design, IEEE Trans. on COM, COM-28(1980)1, 84-95.[5]汪凯,宋国文,矢量量化编码图象恢复质量的改善,全国信息论与通信理论学术会议论文,长春,1987年. -
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