| Presentation | 2010-06-22 Transcoding between Lossy Coding and Lossless Coding for Color Images Masahiro IWAHASHI, Hitoshi KIYA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This report proposes a new transcoding between a lossless encoder and a lossy decoder for color image signals. It requires a reversible color transform (Rev.CT) with compatibility to an irreversible color transform (Irrv.CT). An existing Rev.CT guarantees lossless reconstruction of signals. However its compatibility to an Irrv.CT is not high enough for practical use. This is because a scaling is excluded from the Rev.CT for lossless coding. In this report, we embed the scaling into quantization in lossy decoding to realize both of lossless coding and transcoding with high compatibility. It is experimentally confirmed that image quality is improved by more than 37.6 [dB]. We also evaluate its performance based on various criteria including, bit-extension, word-length of signals and coefficients. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | coding / transform / reversible / coding |
| Paper # | CAS2010-18,VLD2010-28,SIP2010-39,CST2010-18 |
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| Conference Information | |
| Committee | VLD |
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| Conference Date | 2010/6/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | VLSI Design Technologies (VLD) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Transcoding between Lossy Coding and Lossless Coding for Color Images |
| Sub Title (in English) | |
| Keyword(1) | coding |
| Keyword(2) | transform |
| Keyword(3) | reversible |
| Keyword(4) | coding |
| 1st Author's Name | Masahiro IWAHASHI |
| 1st Author's Affiliation | Nagaoka University of Technology() |
| 2nd Author's Name | Hitoshi KIYA |
| 2nd Author's Affiliation | Tokyo Metropolitan University |
| Date | 2010-06-22 |
| Paper # | CAS2010-18,VLD2010-28,SIP2010-39,CST2010-18 |
| Volume (vol) | vol.110 |
| Number (no) | 87 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |