Precise Estimation of Motion Vectors using Block Integration Based on Reliability Metrics and its Applications.

• Nishihara Isao

  Faculty of Eng., Tokyo Institute of Technology

• Yoshida Toshiyuki

  Faculty of Eng., Tokyo Institute of Technology

• Sakai Yoshinori

  Faculty of Eng., Tokyo Institute of Technology

Bibliographic Information

Other Title

• 信頼度に基づくブロック統合を用いた動画像の高精度動きベクトル推定とその応用
• シンライド ニ モトヅク ブロック トウゴウ オ モチイタ ドウガゾウ ノ コウセイド ウゴキ ベクトル スイテイ ト ソノ オウヨウ

Abstract

The block matching technique, which is the most widely utilized technique for motion vectors (MVs), often estimates noisy MVs in matching blocks (MBs), which have less variation in brightness or contain a single edge. To improve accuracy and coherence of MVs, this paper proposes a new estimation technique. This technique comprises MB classification based on a reliability metric for MVs, MB integration, and recalculation of MVs for integrated MBs. Several examples have shown that it can accurately estimate MVs even for flat or edge MBs due to the integration. It was applied to an MPEG encoder and a retrieval system for motion pictures. An evaluation of the coding and retrieval efficiencies demonstrated the validity of the proposed approach.

Journal

• The Journal of The Institute of Image Information and Television Engineers

  The Journal of The Institute of Image Information and Television Engineers 53 (1), 148-156, 1999

  The Institute of Image Information and Television Engineers

Keywords

• 動きベクトル
• ブロックマッチング
• 信頼度
• 動画像符号化
• 動画像検索

Details

• CRID: 1390282680075989760
• NII Article ID: 10014698586
• NII Article ID: 110003692455
• NII Book ID: AN10588970
• DOI: 10.3169/itej.53.148
• ISSN: 18816908
• ISSN: 13426907
• NDL BIB ID: 2543367
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I2543367
• Web Site: http://www.jstage.jst.go.jp/article/itej1997/53/1/53_1_148/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed