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Integrated Lossy and Lossless Image Coding Based on Lossless Wavelet Transform and Lossy-Lossless Multi-Channel Prediction

Somchart CHOKCHAITAM, Masahiro IWAHASHI, Pavol ZAVARSKY, Noriyoshi KAMBAYASHI

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Summary :

In this report, we propose an integrated lossy and lossless image coding, which is possible to be implemented on one architecture, based on combination of lossless wavelet transform (LWT) and lossy-lossless multi-channel prediction (LLMP). The LWT is applied to divide input signals into frequency subbands as octave-band decomposition, whereas the LLMP is designed as a non-separable two-dimensional filter bank including quantization step size and local decoding to enhance coding performance in both lossless coding and lossy coding. Its filter coefficients are determined to minimize total bit rate for lossless coding, and the optimum quantization step size is applied to maximize lossy coding gain. The local decoding is applied to avoid quantization error effect. The experimental results confirm effectiveness of our proposed method.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E84-A No.5 pp.1326-1338
Publication Date
2001/05/01
Publicized
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DOI
Type of Manuscript
PAPER
Category
Image

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