Contourlet image coding based on adjusted SPIHT

Authors:
Haohao Song;Songyu Yu;Li Song;Hongkai Xiong
Affiliations:
Institute of Image Communication and Information Processing, Shanghai Jiao Tong University, SHANGHAI, P.R. China;Institute of Image Communication and Information Processing, Shanghai Jiao Tong University, SHANGHAI, P.R. China;Institute of Image Communication and Information Processing, Shanghai Jiao Tong University, SHANGHAI, P.R. China;Institute of Image Communication and Information Processing, Shanghai Jiao Tong University, SHANGHAI, P.R. China
Venue:
PCM'05 Proceedings of the 6th Pacific-Rim conference on Advances in Multimedia Information Processing - Volume Part I
Year:
2005

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Abstract

Contourlet is a new image representation method, which can efficiently represent contours and textures in images. In this paper, we analyze the distribution of significant contourlet coefficients in different subbands and propose a contourlet image coding algorithm by constructing a virtual low frequency subband and adjusting coding method of SPIHT (Set Partitioning in Hierarchical Trees) algorithm according to the structure of contourlet coefficients. The proposed coding algorithm can provide an embedded bit stream, which is very desirable in heterogeneous networks. Our experiments demonstrate that the proposed coding algorithm can achieve better or competitive compression performance when compared with traditional wavelet transform with SPIHT and wavelet-based contourlet transform with SPIHT, which both are embedded image coding algorithms based on two non-redundant transforms. At the same time, benefiting from genuine contourlet adopted in the proposed coding algorithm, more contours and textures in the coded images are preserved to ensure superior subjective quality.