摘要
小波变换用于图像压缩时,小波基的一些性质对编码的效果有很大影响,如何最合理、快速地选择小波基,在这方面的研究目前并无定论。文章分析了小波基函数的正交性、正则性、对称性和消失矩对图像编码的影响,并利用matlab小波工具箱从实验角度出发,对图像压缩中小波基的选择问题作了探讨。
When wavelet transform is applied to image compression,some of the properties of the wavelet bases affect the quality of the reconstructed image.How to choice wavelet bases reasonably in this area is not well defined.The impact which orthogonality,smooth,symmetry,vanishing moments of wavelet bases function result in on the image coding is analyzed in this paper.From the angle of the experimentation in the matlab,how to choose wavelet base in image compression is discussed.
出处
《电脑与信息技术》
2007年第5期8-10,共3页
Computer and Information Technology
关键词
小波基
图像压缩
正交性
对称性
消失矩
wavelet base
image compression
orthogonality
symmetry
vanishing moments
