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研究生: 呂紹禎
Lu, Shao-Chen
論文名稱: MPEG-4編碼之ㄧ位元動態估計於TriMedia晶片之實現
Binary Motion Estimation for Implementing MPEG-4 Encode on TriMedia Chip
指導教授: 楊家輝
Yang, Jar-Fa
學位類別: 碩士
Master
系所名稱: 電機資訊學院 - 電機工程學系
Department of Electrical Engineering
論文出版年: 2004
畢業學年度: 92
語文別: 中文
論文頁數: 70
中文關鍵詞: ㄧ位元動態搜尋
外文關鍵詞: binary, MPEG-4
相關次數: 點閱:49下載:2
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  •   本論文以菱形搜尋為基礎,加上一位元動態估計演算法,組合成改良式一位元動態估計演算法。此快速演算法可以大幅減少動態估計時,所耗費的龐大計算量。並將此演算法實現在菲利浦公司出品的晶片TriMedia上,並對此演算法,以TriMedia提供的指令集來做最佳化處理。如此ㄧ來便可達到接近即時處理的效果。最後實驗結果顯示,ㄧ位元動態估計演算法在相同的Bit-rate下,PSNR和八位元動態估計演算法相當接近,這是適合應用在監控系統的演算法。

      This paper is based on the diamond search and the one bit motion estimation algorithm. Combine this two algorithm, we get improved fast algorithm, which could decrease the count of motion estimation obviously. We implement this new fast algorithm on the TriMedia chip, which is design by the Philip electric company, and optimize the program by TriMedia operation code, the real-time processing is reachable. Experiment show that the PSNR performance of one bit ME is close to eight bit ME at the same bit-rate, So that the one bit ME algorithm is adapt to surveillance system application.

    目 錄 頁次 目 錄 i 表目錄 iv 圖目錄 v 第一章 MPEG-4介紹 1 1.1 MPEG-4視訊編碼與解碼架構 1 1.2 MPEG-4動態編碼介紹 4 1.2.1畫面編碼型態判斷 4 1.2.2物件編碼 5 1.2.3以巨方塊為基礎的編碼 7 第二章 動態估計 8 2.1以8x8方塊為基礎的編碼 9 2.2判斷影像差異度的標準 10 2.3動態補償 11 2.4差值編碼 12 2.5動態估計的搜尋圖樣 14 2.5.1完全搜尋 15 2.5.2階層搜尋 16 2.5.3三步搜尋 17 2.5.4菱形搜尋 18 第三章 一位元動態搜尋快速演算法 19 3.1簡介 19 3.2傳統一位元動態搜尋 20 3.2.1濾波器 20 3.2.2方塊的比對 22 3.2.3一位元快速演算法的缺點 22 3.3改良式一位元動態估計演算法 23 3.3.1介紹 23 3.3.2濾波器 23 3.3.3比對 28 3.3.4搜尋圖樣 37 3.4實驗數據 38 第四章 TriMedia MPEG-4系統之實現 44 4.1簡介 44 4.2 TriMedia硬體架構介紹 45 4.3 TriMedia軟體開發環境介紹 50 4.4 TriMedia程式最佳化 53 4.4.1展開迴圏 54 4.4.2受限的指標 55 4.4.3暫存器變數 57 4.4.4訂制的指令 60 4.4.5內嵌函式 64 第五章 結論 66 參考文獻 67

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