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.

• 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。