由於數位科技的發展，複製的程序越來越簡單，因此數位影像很容易被複製，甚至被竄改。有鑑於此，我們可利用數位浮水印技術來解決此問題，證明數位影像的版權所有及保障智慧財產權。在本論文中，我們提出一多重浮水印技術做為多媒體資料保護。我們首先分析並介紹過去許多植基於Spatial及DCT/Wavelet視覺模組方法的優缺點。此外，為了克服先前方法的缺點並自適應於各種影像攻擊，我們嵌入兩個扮演功能互補角色的浮水印，以期在遭遇任何攻擊情況下，至少還有一個浮水印能存活。以可見的浮水印宣告版權擁有人，並且用不可見的浮水印作為版權保護。 這兩個浮水印運用不同的技術嵌入在影像中。此外提出一個最佳化技術，以禁止搜尋演算法實現浮水印的強健性與改善影像品質。實驗結果證明我們所提的方法能有效改善數位浮水印技術中，影像品質與強健性浮水印相互制衡的問題。

This paper presents an image watermarking method for two purposes: one is to notify the copyright owner with a visible watermark, and the other is to protect the copyright with an invisible watermark. These two watermarks are embedded in different domains with different techniques. An innovative watermarking scheme based on tabu search (TS) algorithms in both the spatial domain and the transform domain is proposed. The fidelity performance of an existing image watermarking scheme is enhanced through the TS optimization. The experimental results show that the proposed techniques can improve the degraded image quality greatly. Simulation results show that the proposed method may improve the PSNR for embedding the visible watermark and enhance the robustness of the invisible watermark

中文摘要 i
英文摘要 ii
致謝 iii
目錄 iv
圖目錄 vii
表目錄 xi
第一章 緒論
1.1 前提------------------------------------------------1
1.2 研究動機與目的--------------------------------------1
1.3 論文架構--------------------------------------------3
第二章 數位浮水印技術發展與簡介
2.1 數位浮水印的分類------------------------------------5
2.2 數位浮水印的特性------------------------------------7
2.3 空間域及頻域中的數位浮水印技術----------------------9
2.3.1 空間域數位浮水印技術-------------------------------10
2.3.2 頻率域數位浮水印技術-------------------------------11
2.4 結語-----------------------------------------------22
第三章 禁止搜尋演算法
3.1 禁止搜尋演算法之基本概念---------------------------23
3.2 禁止搜尋演算法主要組成要素-------------------------24
3.3 禁止搜尋演算法的演算法則---------------------------28
3.4 禁止搜尋演算法運算流程-----------------------------28
3.5 結語-----------------------------------------------30
第四章 多重浮水印嵌入技術
4.1 多重浮水印概論-------------------------------------32
4.2 多重浮水印技術-------------------------------------32
4.2.1 可見浮水印嵌入技術---------------------------------33
4.2.2 不可見浮水印嵌入技術-------------------------------42
4.3 互補式多重浮水印嵌入技術---------------------------46
4.4 結語-----------------------------------------------48
第五章 植基於禁止搜尋演算法之多用途數位浮水印技術
5.1 影像攻擊-------------------------------------------51
5.1.1 低通濾波器-----------------------------------------51
5.1.2 中值濾波器-----------------------------------------52
5.1.3 JPEG壓縮攻擊---------------------------------------53
5.2 影像攻擊討論 57
5.3 植基於禁止搜尋演算法之多用途數位浮水印技術---------58
5.3.1 數位浮水印嵌入架構---------------------------------58
5.3.2 數位浮水印嵌入方法---------------------------------59
5.4 結語-----------------------------------------------62
第六章 實驗結果
6.1 可見浮水印之實驗結果-------------------------------64
6.2 不可見浮水印之實驗結果-----------------------------65
6.3 植基於禁止搜尋演算法之多用途數位浮水印實驗結果-----71
第七章 結論
7.1 總結-----------------------------------------------76
7.2 未來展望-------------------------------------------77
參考文獻----------------------------------------------------78

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