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研究生: 李佩瑾
Li, Pei-jin
論文名稱: 基於對極幾何及全域估測之多視角視訊壓縮快速視差向量搜尋
Fast Disparity Search Based on Epipolar Geometry and Global Prediction for Multiview Video Coding
指導教授: 楊家輝
Yang, Jar-Ferr
學位類別: 碩士
Master
系所名稱: 電機資訊學院 - 電腦與通信工程研究所
Institute of Computer & Communication Engineering
論文出版年: 2008
畢業學年度: 96
語文別: 中文
論文頁數: 65
中文關鍵詞: 快速視差向量搜尋全域視差向量估測子多視角視訊壓縮系統
外文關鍵詞: GDV prediction, fast disparity search, MVC
相關次數: 點閱:70下載:3
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  • 隨著多視角立體液晶螢幕的推出,人們將不再需要配戴立體眼鏡即可透過螢幕輕易地欣賞立體視訊,多視角視訊影像壓縮系統(Multi-view Video Coding System,簡稱MVC)是目前正在發展中的視訊標準。這個標準預計將會成為未來3D立體多媒體應用的關鍵標準。這個系統又稱H.264/MVC是目前H.264/AVC的一個延伸標準。
    在此論文中,我們提出了一個新的預測方式來預測多視角視訊影像壓縮系統中的進階全域視差向量估測子,並且藉由多視角視訊影像壓縮系統本身的特性,以及新的全域視差向量估測子的預測方式為基礎,來改良原本在H.264中的快速搜尋演算法。

    After availability of multiview stereo LCD display systems, people can perceive stereo videos without wearing any special 3D glasses. The multiview video coding (MVC) system is a newly-developed video compression standard in recent years. This video compression standard is expected to be the key technology in the 3D stereo multimedia applications. This standard, named H.264/MVC is an extension of H.264/AVC.
    In this thesis, we propose a new prediction method to predict the adaptive global disparity vector (GDV) in the MVC system. We also improve the current fast disparity search algorithm in H.264/AVC by incorporating the characteristics among multi-views and the new GDV prediction method.

    摘要 i ABSTRACT(English) iv 誌謝 iiv 目錄 iv 圖目錄 vi 表目錄 viii 第1章 簡介 1 1.1研究背景 1 1.2 H.264壓縮標準簡介 1 1.3 多視角影像壓縮系統簡介 8 1.4 研究目的與動機 15 1.5 論文大綱 16 第2章 多重視角影像壓縮系統 17 2.1 多重視角視訊影像壓縮系統的基本要求 17 2.2多重視角影像壓縮模型 20 2.3 多視角影像壓縮系統之視差向量估測法 23 第3章 進階全域視差向量估測子技術 26 3.1 對極幾何原理介紹 26 3.2 全域視差向量估測子介紹 32 3.3 進階全域視差向量估測子(Adaptive GDV predictor) 34 3.4多重候選估測子(multi-candidate predictor) 36 第4章 適應性快速搜尋演算法 37 4.1 非對稱多重六角形搜尋演算法(UMH Algorithm) 38 4.2 簡化之聯合多重六角形搜尋法介紹 (SUMH) 41 4.3 改良式簡化之聯合多重六角形視差向量搜尋演算法 43 第5章 實驗結果 49 5.1 upGDV在full search以及在SUMH快速搜尋演算法中之效能比較 51 5.2 Modified SUMH和原本SUMH之效能比較 56 5.3 計算複雜度分析 57 第6章 結論與未來展望 62 參考文獻 63

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