A Study on Lossless Re-encoding of Multimedia Contents
Project/Area Number |
20500102
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Media informatics/Database
|
Research Institution | Tokyo University of Science |
Principal Investigator |
MATSUDA Ichiro 東京理科大学, 理工学部, 准教授 (70287473)
|
Project Period (FY) |
2008 – 2011
|
Project Status |
Completed (Fiscal Year 2011)
|
Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2009: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
|
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 / 映像コンテンツ / 標準符号化方式 / Motion-JPEG / 離散コサイン変換(DCT) / カラー動画像 / ブロック適応時空間予測 / MPEG Audio Layer-3 / 量子化特性 / ウェーブレット変換 / 画像情報工学 / JPEG標準 / 算術符号化 / 一般化ガウス関数 |
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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Report
(6 results)
Research Products
(66 results)