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    題名: 基於人類視覺系統之H.264視訊展頻浮水印系統
    其他題名: A spread spectrum watermarking scheme of H.264 video based on human visual system
    作者: 張美雀;Chang, Mei-chueh
    貢獻者: 淡江大學資訊工程學系碩士在職專班
    顏淑惠;Yen, Shew-huey
    關鍵詞: 視訊浮水印;展頻;人類視覺感官系統;video watermarking;spread spectrum;human visual system (HVS);H.264
    日期: 2008
    上傳時間: 2010-01-11 06:16:49 (UTC+8)
    摘要: 有鑑於數位科技的進步與多媒體產品的普遍,為了達到智慧財產權保護的目的,本論文提出一個展頻且配合人類視覺感官系統的視訊浮水印技術以兼顧浮水印的強健度與透明性。我們設計一個浮水印嵌入遮罩M,結合Watson’s 人類視覺系統,將浮水印嵌入於I-frame 4x4 DCT的AC係數。同時,我們也提出一個機制以抵擋畫面刪除、調換、複製等可能攻擊。
    As an effective method for copyright protection and content integrity verification of intellectual property, digital watermarking has become a very active area in the field of multimedia security. We propose a watermarking scheme of H.264 based on Watson’s human visual system. A 4x4 DCT mask combining Watson’s human visual system on DCT will be designed. Using the mask, a spread spectrum watermarking scheme is given to embed the watermark on AC coefficients of 4x4 DCT blocks. And it provides a way to classify 4x4 DCT blocks into edge, textured, or smooth-blocks, and it also is a reference for watermark embedding strength. We also propose a method to resist the frame dropping, reversing, duplicating attacks.
    顯示於類別:[資訊工程學系暨研究所] 學位論文

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