ピクセル状態分析によるオブジェクトベース符号化

• 西 貴行

  名古屋工業大学

• 藤吉 弘亘

  中部大学

• 梅崎 太造

  名古屋工業大学

書誌事項

タイトル別名

• Object-based Video Coding Using Pixel State Analysis
• ピクセル ジョウタイ ブンセキ ニ ヨル オブジェクトベース フゴウカ

抄録

In archiving video for surveillance, frame-based coding has been used and it makes storage size large because the whole image is stored even if there is no object in the image. On the other hand, object-based coding has the capability to make storage size small, because it distinguishes between the foreground and the background regions of the image, and stores only foreground objects such as people. This paper describes object-based coding by pixel state analysis. In our method, pixel state analysis detects the foreground objects and background regions in video frames. Furthermore, it distinguishes foreground object pixels as stationary or transient pixels. For stationary pixels, it is possible to restore the color intensity by refering to the same pixel location in the last frame. Therefore, our method makes the storage size smaller. Additionally, the transient pixels of foreground objects are compressed using LZH codec. Since LZH codec uses lossless compression, the object region can be compressed with lesser loss in image quality. We have evaluated our method over 9 test sequences and obtained an improvement of 15% in compression ratio and better quality for the moving parts of the object region compared to MPEG-4.

収録刊行物

• 電気学会論文誌Ｃ（電子・情報・システム部門誌）

  電気学会論文誌Ｃ（電子・情報・システム部門誌） 124 (12), 2433-2438, 2004

  一般社団法人 電気学会

キーワード

• オブジェクトベース符号化
• ピクセル状態分析
• 動画像圧縮

詳細情報

• CRID: 1390282679582957184
• NII論文ID: 10014163179
• NII書誌ID: AN10065950
• DOI: 10.1541/ieejeiss.124.2433
• ISSN: 13488155
• ISSN: 03854221
• NDL書誌ID: 7167823
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7167823
• Web Site: http://www.jstage.jst.go.jp/article/ieejeiss/124/12/124_12_2433/_pdf
• 本文言語コード: ja
• データソース種別:
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