Improvement of Coding Performance for Matching Pursuits Using Dynamic Learning Dictionary

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  • TAMAKI Wataru
    Graduate School of Natural Science & Technology, Kanazawa University
  • IMAMURA Kousuke
    Graduate School of Natural Science & Technology, Kanazawa University
  • HASHIMOTO Hideo
    Graduate School of Natural Science & Technology, Kanazawa University

Bibliographic Information

Other Title
  • 学習による動的辞書を用いたMatching Pursuits符号化の特性改善(マルチメディア情報入力及び処理方式および一般)
  • 学習による動的辞書を用いたMatching Pursuits符号化の特性改善
  • ガクシュウ ニ ヨル ドウテキ ジショ オ モチイタ Matching Pursuits フゴウカ ノ トクセイ カイゼン

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Abstract

Video coding methods have been based on hybrid coding which employs motion compensation and discrete cosine transform. On the other hand, another high efficiency video coding method using Matching Pursuits (MP) has been proposed in low bit rate. The Matching Pursuits algorithm represents a signal with an approximate from using a dictionary. On the results, coding performance depends on the dictionary greatly. In this paper, we introduce a technique of dynamic dictionary design, and we attempt to improve the coding performance by applying the dynamic dictionary at each frame in encoding process.

Journal

  • ITE Technical Report

    ITE Technical Report 32.26 (0), 45-48, 2008

    The Institute of Image Information and Television Engineers

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