| 基于双正交小波包的图像压缩研究 |
| |
| 作者单位： | 宜宾学院物理学与电子信息系，成都理工大学信息工程学院 四川宜宾644007，成都理工大学信息工程学院，四川成都610059，四川成都610059 |
| |
| 摘 要： | 介绍了小波变换的图像压缩模型和小波包在图像压缩中的优势,深入研究了双正交小波包在图像压缩中的分解与重构算法,构造了基于Shannon熵准则的双正交小波最优基,并应用MATLAB软件进行仿真实验,分析比较了双正交小波包和haar小波在指纹图像压缩中的性能,表明双正交小波包在边缘突变检测方面具有优良的性能。
|
| 关 键 词： | 双正交小波 小波包 图像压缩 Shannon熵 最优基 MATLAB7 |
The Study of Image Compression Based on Biorthogonal Wavelet Packet |
| |
| Authors: | CHENG Wen-bo LI Can-ping |
| |
| Institution: | CHENG Wen-bo1,2,LI Can-ping2 |
| |
| Abstract: | The model of image compression based on wavelet transform and superiority of wavelet packet in image compression are introduced,algorithms of image decomposition and reconstruction based on biorthogonal wavelet packet are studied deeply,best basis of biorthogonal wavelet packet based on Shannon entropy is constructed,and simulated by using MATALAB7.This paper also analyzed and compared biorthogonal wavelet packet with Haar wavelet in the application of fingerprint image compression.The comparative result indicates biorthogonal wavelet packet has nicer performance in abrupt change of edges detection. |
| |
| Keywords: | biorthogonal wavelet wavelet packet image compression shannon entropy best basis MATLAB7 |
| 本文献已被 CNKI 等数据库收录！ |
