臺灣博碩士論文加值系統

資訊隱藏技術發源甚早，其中，數位浮水印技術論文於 1990 年首次提出，在網路普及的年代，複製電子媒體輕而易舉，所以浮水印技術不再單純以秘密溝通為主，尚包含影像的版權確認與竄改偵測等應用。早期的浮水印技術皆以空間域方式藏入秘密資訊，但為了抵抗因影像處理與壓縮所產生的影響，後來多以頻率域方式藏入資訊以增加其強韌度，除此之外，較不易以視覺感知或偵測，較著名空間域到頻率域的轉換有離散餘弦轉換、離散傅立葉轉換與離散小波轉換等技術。
本研究以離散小波轉換為基礎，建立一套快速運算的盲目型浮水印系統 (Blind watermarking)，取得浮水印不需要跟原圖有關的額外資訊，另外，同時具有影像驗證功能 (Image authentication)，同時竄改證明 (Tamper proof) 可標示出被修改的區塊。本論文之浮水印系統是透過修改對應的頻域係數結構，達成浮水印的潛藏，擁有良好的透通度、強韌度、盲目性與安全性，並具有偵測竄改區塊，結合盲目型浮水印與易碎型浮水印系統。

目錄
摘要 I
誌謝 II
目錄 III
圖目錄 IV
表目錄 V
第一章 緒論 - 1 -
第一節 研究背景 - 1 -
第二節 研究動機 - 2 -
第三節 研究目的 - 3 -
第二章 文獻探討 - 4 -
第一節 背景知識 - 4 -
第二節 小波轉換 - 13 -
第三節 離散小波轉換浮水印技術 - 15 -
第三章 本文的浮水印方法 - 19 -
第一節 浮水印插入方法 - 24 -
第二節 浮水印取出方法 - 28 -
第三節 影像驗證方法 - 29 -
第四章 評估與分析 - 30 -
第一節 影像剪裁與切割 - 32 -
第二節 影像幾何攻擊 - 32 -
第三節 一般影像處理 - 36 -
第四節 影像壓縮處理 - 37 -
第五節 影像驗證的竄改偵測 - 43 -
第六節 安全性分析 - 49 -
第五章 結論 - 51 -
第一節 研究貢獻 - 51 -
第二節 後期研究 - 52 -
參考文獻 - 53 -

參考文獻
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