A Method for Estimating Coding Gain of an Orthogonal Wavelet Transform Considering Higher-Order Statistics

摘要

In applications such as subband coding, the coding gain is a useful evaluation measure for representing the bit-rate reduction performance of the subband filter for the object of coding. It is widely used in the estimation of coding performance and the design of subband filters. To estmate the coding gain requires knowledge of the prob- ability density distribution of the object of coding and the decomposed subband series. Identification of the prob- ability density function, however, is in general difficult.