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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/70399


    Title: Efficient VLSI architecture with real-time for two-dimensional inverse discrete wavelet transform
    Other Titles: 即時有效率之二維離散小波反轉換VLSI架構
    Authors: 李偉銘;Li, Wei-Ming;夏至賢;Hsia, Chih-Hsien;戴嘉宏;Dai, Chia-Hong;江正雄;Chiang, Jen-Shiun
    Contributors: 淡江大學電機工程學系
    Keywords: 交錯讀取掃瞄演算法;提昇式;離散小波轉換;離散餘弦轉換
    Date: 2006
    Issue Date: 2011-10-23 21:15:28 (UTC+8)
    Publisher: 高雄市:高雄海洋科技大學微電子系
    Abstract: 離散小波轉換(Discrete Wavelet Transform, DWT)近年來已成為影像/視訊系統的主流,它擁有比離散餘弦轉換(Discrete Cosine Transform, DCT)更好的低位元壓縮率。在本論文中,我們透過介紹JPEG 2000 中二維離散小波正轉換(2-D Forward Discrete Wavelet Transform, 2-D FDWT)之演算法,提出一個有效率的二維離散小波反轉換(2-D Inverse Discrete Wavelet Transform, 2-D IDWT)VLSI架構設計,在電路設計上,特別考慮到影像邊緣效應之處理,藉由適當的映射硬體電路之設計,可使影像反轉換時能更接近原始影像,並且硬體設計以低轉置記憶及高工作頻率為目標,為達此目的我們提出了交錯讀取掃瞄演算法(Interlaced Read Scan Algorithm, IRSA),以平行小波轉換器處理方式達成低記憶空間並減少其時脈週期以加快運算速度, 因此, 我們改善輸入資料順序以提昇式架構(Lifting-Based)設計一個利用5/3無失真的IDWT。它可以有更低計算的複雜度,與規則的資料流,很容易作為VLSI的實現,而且適合應用於JPEG 2000、MPEG-4和Scalable Video Coding(SVC)的及時訊號處理系統。
    Relation: 2006年第四屆微電子技術發展與應用研討會論文集=Proceedings of 2006 Conference on Microelectronics Technology and Applications (2006 C'META), 6p.
    Appears in Collections:[電機工程學系暨研究所] 會議論文

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