离散余弦变换与小波变换的比较

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英文篇名：Comparative Analysis Between Discrete Cosine Transform and Wavelet Transform 中文刊名：河北理工学院学报 英文刊名：Journal of Hebei Institute of Technology 作者：王培茂 英文作者：WANG Pei-mao (Jiangsu Polytechnic University ; the Department of Computer Science and Technology ; Changzhou Jiangsu 213016 ; China) 中文关键词：离散余弦变换 ; 小波变换 ; 图像编码 英文关键词：discrete cosine transform ; transform ; wavelet transform ; picture coding 出版日期：2005-08-30 机构：江苏工业学院计算机工程系 江苏常州213016 年：2005 期：03 出版单位：河北理工学院学报

摘要

研究了离散余弦变换和小波变换性能的不同。介绍了离散余弦变换的数学原理及其应用上的特点,以及小波变换的数学原理和信号处理中的分频特点。最后,对比了离散余弦变换(DCT)与离散小波变换(DWT)图像编码的性能,得到了它们图像编码各自的优缺点。
The study researches the difference between discrete cosine transform and wavelet transform.The character of DCT above mathematical principle and application is put forward.On the contrary wavelet transform is showed that includes its mathematical principle and peculiarity of frequency division.Finally the relative merits are found in picture coding according to their respective performance.

引文

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