【摘要】 小波变换用于图象压缩时 ,小波基的一些性质对编码的效果有很大影响。通过分析双正交小波、正交小波的特点 ,以及小波基的正则性和消失矩在图象编码时对恢复图象质量的影响。从而给出了图象编码是选择双正交小波的原则。最后通过三个被证实的标准进行了分析 ,并通过实验进行了验证。更多还原

【Abstract】 When wavelet transform is applied to image compression,some of the properties of the wavelet bases affect the quality of the reconstructed image. This paper analyses characteristics of the biorthogonal wavelet and orthogonal wavelet and the effect of the regularity and vanishing moments of the wavelet when image coding.Finally,the expriments and several criteria proven to be closely related to image coding proved these viewpoint.更多还原