Presentation | 2001/4/13 Lossless Near-lossless and Lossy Integrated Cording based on Lossless DCT Somchart Chokchaitam, Tokimichi Kanetaka, Masahiro Iwahashi, |
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Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | We propose a new coding method integrating 3 coding modes - lossless, near-lossless and lossy coding modes - under a unified single algorithm based on lossless DCT (L-DCT). In lossless mode, only the L-DCT and an entropy coder are used. In lossy mode, transformed coefficients of the L-DCT are quantized and then entropy coded as same as a conventional lossy method for compatibility. In this manner, coding results are almost similar to these of the conventional lossy method except high bit rate because of rounding operation in the L-DCT. Therefore, in near-lossless mode, we put quantization before the L-DCT to avoid the rounding effect. The turning point between near-lossless mode and lossy mode is also theoretically analyzed. Simulation results confirm effectiveness of our integrated system. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | Lossless / Near-lossless / Lossy / Integrated cording / DCT |
Paper # | DSP2001-4,IE2001-4,MI2001-4 |
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Conference Information | |
Committee | DSP |
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Conference Date | 2001/4/13(1days) |
Place (in Japanese) | (See Japanese page) |
Place (in English) | |
Topics (in Japanese) | (See Japanese page) |
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Paper Information | |
Registration To | Digital Signal Processing (DSP) |
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Language | ENG |
Title (in Japanese) | (See Japanese page) |
Sub Title (in Japanese) | (See Japanese page) |
Title (in English) | Lossless Near-lossless and Lossy Integrated Cording based on Lossless DCT |
Sub Title (in English) | |
Keyword(1) | Lossless |
Keyword(2) | Near-lossless |
Keyword(3) | Lossy |
Keyword(4) | Integrated cording |
Keyword(5) | DCT |
1st Author's Name | Somchart Chokchaitam |
1st Author's Affiliation | Department of Electrical Engineering, Nagaoka University of technology() |
2nd Author's Name | Tokimichi Kanetaka |
2nd Author's Affiliation | Department of Electrical Engineering, Nagaoka University of technology |
3rd Author's Name | Masahiro Iwahashi |
3rd Author's Affiliation | Department of Electrical Engineering, Nagaoka University of technology |
Date | 2001/4/13 |
Paper # | DSP2001-4,IE2001-4,MI2001-4 |
Volume (vol) | vol.101 |
Number (no) | 18 |
Page | pp.pp.- |
#Pages | 8 |
Date of Issue |