A Bit-Rate Adaptive Coding System Based on Lossless DCT
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概要
- 論文の詳細を見る
In this paper, we propose a bit-rate adaptive coding system based on lossless DCT (L-DCT). Our adaptive coding system consists of three different operation modes: lossless, near-lossless and lossy coding modes. Quantization is applied in transform domain (after the L- DCT) and spatial domain (before the L-DCT) in lossy mode and near-lossless mode, respectively. Our adaptive coding system can automatically select its operation mode at a given bit rate because it contains a function to calculate the turning point between near-lossless mode and lossy mode from characteristic of input signal. Existence of the turning point is mathematically proved in this paper. Simulation results confirm not only effectiveness of our adaptive coding system but also accuracy of our theoretical analysis.
- 社団法人電子情報通信学会の論文
- 2002-02-01
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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