Hybrid Optimum Frequency Band Partition Method in Subband Image Coding

Abstract

The optimum frequency band partition which divides the 2-dimensional frequency domain into an adequate set of subbands based on the stochastic characteristics of the input image has been developed in subband image coding. In this paper, a hybrid optimum frequency band partition method which can determine an unique partition pattern by integrating two kinds of partition patterns in the conventional methods is proposed with small computational costs, in order to improve the coding efficiency of the subband image coding.