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基于小波变换的矢量量化快速编码算法
引用本文:陈善学,王恒哲.基于小波变换的矢量量化快速编码算法[J].重庆邮电学院学报(自然科学版),2002,14(2):29-32.
作者姓名:陈善学  王恒哲
作者单位:[1]重庆邮电学院,重庆400065 [2]贵州省移动通信公司,贵州贵阳550002
摘    要:提出了一种基于均方误差(MSE)测度的矢量量化快速编码算法,算法利用小波变换的特点,合理地构造矢量,结合非线性插补矢量量化技术、矢量和值差法和部分失真排除法,在搜索编码过程中,有效排除部分候选码字。实验结果表明,相对于穷尽搜索方法,计算量有明显降低,计算时间减少约97%。

关 键 词:快速编码算法  小波变换  矢量量化  均方误差  图像编码

A Fast Encoding Algorithm for Vector Quantization Based on Wavelet Transforms
CHEN Shan-xue ,WANG Heng-zhe.A Fast Encoding Algorithm for Vector Quantization Based on Wavelet Transforms[J].Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition),2002,14(2):29-32.
Authors:CHEN Shan-xue  WANG Heng-zhe
Institution:CHEN Shan-xue 1,WANG Heng-zhe 2
Abstract:A fast encoding algorithm which is based on the mean square error (MES) distortion for vector quantization is introduced. With wavelet transform features of this algorithm, the vectors can be effectively constructed. In the process of searching for code, a part of code words can be rejected by utilizing the non-linear interpolated vector quantization (NLIVQ) technique, the partial distance search technique and the method of using the difference between the vector sum values of two vectors. Experimental results show that the reduction of computation is considerable and computing time is reduced by about 97% as against full search method in the encoding.
Keywords:wavelet transform  vector quantization (VQ)  mean square error (MSE)
本文献已被 CNKI 维普 等数据库收录!
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