Integrated Lossy and Lossless Image Coding Based on Lossless Wavelet Transform and Lossy-Lossless Multi-Channel Prediction
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概要
- 論文の詳細を見る
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 sub-bands 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.
- 社団法人電子情報通信学会の論文
- 2001-05-01
著者
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IWAHASHI Masahiro
Department of Internal Medicine, Saiseikai-Hita Hospital
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Iwahashi Masahiro
Department Of Electrical Engineering Faculty Of Engineering Nagaoka University Of Technology
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CHOKCHAITAM Somchart
Department of Electrical Engineering, Nagaoka University of Technology
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Zavarsky Pavol
Department of Physical Electronics, Tokyo Institute of Technology
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KAMBAYASHI Noriyoshi
Department of Electrical Engineering, Nagaoka University of Technology
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Kambayashi N
Nagaoka University Of Technology
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Kambayashi Noriyoshi
Department Of Electrical Engineering Nagaoka University Of Technology
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Chokchaitam S
Nagaoka Univ. Technol. Nagaoka‐shi Jpn
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Chokchaitam Somchart
Department Of Electrical Engineering Nagaoka University Of Technology
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Zavarsky Pavol
Department Of Electrical Engineering Nagaoka University Of Technology
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