2011 Fiscal Year Final Research Report
A Study on Lossless Re-encoding of Multimedia Contents
| Project/Area Number |
20500102
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Media informatics/Database
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
MATSUDA Ichiro 東京理科大学, 理工学部, 准教授 (70287473)
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| Project Period (FY) |
2008 – 2011
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| Keywords | 画像符号化 / データ圧縮 / ロスレス再符号化 / 離散コサイン変換 / イントラ予測 / 動き補償予測 / 量子化 / 算術符号 |
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| Research Abstract |
In this study, we have developed a lossless re-encoding technique which can compress the existing image contents without any additional loss of quality. The basic algorithm was mainly designed for JPEG and MPEG-1 schemes : the international coding standards widely used for images and videos. As a result, 10.30% bit-rate savings are achieved against the already compressed image data. This new technology enables us to archive a large amount of the existing image contents with efficiency comparable to state-of-the-art coding schemes.
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Research Products
(34 results)
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[Remarks] 本研究課題に関する受賞(1)海野恭平,"ブロック適応時空間予測に基づいた動画像符号化の検討",情報処理学会山下記念研究賞, 2012年3月7日.
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[Remarks] (2)上田直之," WT係数のブロック適応予測に基づいたJPEG2000画像のロスレス再符号化",映像情報メディア学会学生優秀発表賞, 2010年9月1日.
