A Study of Subband Image Coding using Inter-band Correlation of Signal Distribution

Abstract

It is one of the important problems on subband image coding how to encode high frequency subband signals efficiently as possible, under bit allocation constraints. High-frequency subbands have some features preventing from efficient coding, i.e. their signal energy is smaller than that of low-frequency band, but widely spread in local area on spacial domain. In this paper, a subband image coding using inter-band correlation of signal distribution is described. Simulation results show the proposed method has attained good coding performance.