基于DCT域圖像數(shù)字水印算法的設(shè)計(jì)與實(shí)現(xiàn)
1.2萬字 32頁
包括開題報(bào)告和任務(wù)書



摘 要
數(shù)字作品引發(fā)的盜版問題和版權(quán)紛爭已成為日益嚴(yán)重的社會(huì)問題的今天，數(shù)字水印是實(shí)現(xiàn)數(shù)字產(chǎn)品版權(quán)保護(hù)和安全維護(hù)的有效辦法，其在所有權(quán)水印標(biāo)記搜索、拷貝控制、指紋識(shí)別等多方面都得以應(yīng)用。
針對(duì)圖像的水印方案是最近幾年研究的主流方向，本文重點(diǎn)研究了基于DCT域的圖像數(shù)字水印的設(shè)計(jì)和實(shí)現(xiàn)方法。第一章介紹了數(shù)字水印目前的研究現(xiàn)狀，并簡單描述了將實(shí)現(xiàn)的圖像數(shù)字水印系統(tǒng)的構(gòu)思和預(yù)期目標(biāo)；第二章介紹了本文所涉及的主要相關(guān)知識(shí)和技術(shù)；第三章討論選擇MATLAB作為實(shí)現(xiàn)系統(tǒng)的工具的目的和優(yōu)勢以及系統(tǒng)環(huán)境配置；第四章為本論文的主要部分，是系統(tǒng)實(shí)現(xiàn)的具體過程，包括主要步驟水印嵌入、水印提取、水印檢測。從實(shí)驗(yàn)結(jié)果看，系統(tǒng)能保證水印的不可見性，并保持較好的魯棒性，即使在攻擊下仍有不錯(cuò)的視覺效果，相關(guān)系數(shù)也符合數(shù)字水印質(zhì)量指標(biāo)的要求。

關(guān)鍵詞：圖像水印，離散余弦變換，人眼視覺系統(tǒng)



Design and Implement of Digital Image Watermark Based on DCT

Abstract
Nowadays, disputes of digital entries caused by piracy and copyright have become an increasingly serious social problem, so digital watermarking has been the effective measures to protect digital copyright and maintain security, and it has been applied into ownership Watermark Search, Copy control, fingerprint identification and other aspects.
Image Watermarking against the program in recent years is the main research direction. This paper focuses on a DCT-based image digital watermark design and implementation. Chapter I provides a digital watermark current status of research and simple description of the idea and expected target of achieve image digital watermarking system; The second chapter describes the knowledge and technology the paper mainly related; The third chapter discusses optioning MATLAB as a tool to achieve the purpose and advantages and the environment of the system configuration; Chapter IV of the main thesis of this part is the specific process of the system implementation, including major steps, watermark embedding, watermark extraction, watermark detection. From the experimental results, the system can ensure that the watermark is not visible, and maintain better robustness, Even in the attack are still good visual effects, and the correlation coefficient is also in line with digital watermarking quality objectives.

Key Words: Digital Watermark , Discrete Cosine Transformation(DCT), Human Visual System (HVS)

目 錄
1 緒論 1
1.1 國內(nèi)外研究狀況 1
1.2 系統(tǒng)目標(biāo)分析 4
1.3 系統(tǒng)設(shè)計(jì)構(gòu)想 4
2 系統(tǒng)關(guān)鍵技術(shù)介紹 5
2.1 數(shù)字水印 5
2.1.1 數(shù)字水印的基本框架 6
2.1.2 數(shù)字水印的特點(diǎn) 7
2.1.3 數(shù)字水印的分類 8
2.2 離散余弦變換 9
2.3 人眼視覺感知系統(tǒng) 10
3 系統(tǒng)環(huán)境配置及工具選擇 13
3.1 開發(fā)工具的介紹與選擇 13
3.1.1 MATLAB 13
3.1.2 C/C++ 14
3.1.3 關(guān)于圖像水印 15
3.2 工作環(huán)境的配置 15
4 系統(tǒng)實(shí)現(xiàn) 16
4.1 水印嵌入 16
4.1.1 水印嵌入思路分析 16
4.1.2 水印嵌入步驟 16
4.2 水印提取 18
4.2.1 水印提取思路分析 18
4.2.2 水印提取步驟 18
4.3 水印測試 19
4.3.1 白噪聲攻擊測試 20
4.3.2 JPEG壓縮攻擊測試 21
4.3.3 高斯低通濾波攻擊測試 22
4.4 本章小結(jié) 23
5 總結(jié) 24
致謝 25
參考文獻(xiàn) 26



參考文獻(xiàn)
[9]D Kundur, Dimitrios, Hatzinakos. A robust digital image watermarking method using wavelet-based fusion[J]. Porc.IEEE Int't Conf on Image Processing
[10 ]J.K.Ruanaidh, J.W.Dowing, F.M.Boland. Phase watermarking of digital image[J]. Porc IEEE Int’t.Conf on Image Processing
[11]黃繼武,Yun Q SHI,程衛(wèi)東.DCT域圖像水印嵌入對(duì)策和算法[J].電子學(xué)報(bào)
[13] 胡影,周付根.一種基于 HVS和DCT的數(shù)字水印算法[J].中國體視學(xué)與圖像分析