基于數(shù)字水印技術(shù)的版權(quán)認(rèn)證應(yīng)用研究

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摘要 隨著計算機網(wǎng)絡(luò)、多媒體技術(shù)的飛速發(fā)展，數(shù)字化媒體資源已成為信息主流方式。數(shù)字產(chǎn)品易于編輯、復(fù)制、傳輸?shù)奶攸c一方面促進(jìn)了人類信息的共享，另一方面隨之而來的數(shù)字版權(quán)保護和內(nèi)容認(rèn)證問題也變得突出，成為了當(dāng)下數(shù)字世界迫切需要解決的問題。傳統(tǒng)的密碼學(xué)技術(shù)已不能有效解決數(shù)字版權(quán)保護問題，數(shù)字水印技術(shù)應(yīng)運而生。
本文首先對版權(quán)認(rèn)證的研究背景與研究意義進(jìn)行了簡介；然后對數(shù)字水印技術(shù)進(jìn)行了研究；在對數(shù)字版權(quán)認(rèn)證保護系統(tǒng)的應(yīng)用需求進(jìn)行分析的基礎(chǔ)上，本文提出了一種基于B/S（Browser/Server）模式的數(shù)字圖像版權(quán)保護系統(tǒng)的方案。該方案以B/S模式為基礎(chǔ)，將系統(tǒng)分為系統(tǒng)管理、水印處理以及版權(quán)認(rèn)證這三個模塊，并采用代表性的數(shù)字圖像算法實現(xiàn)水印的嵌入與提?。蛔詈蟊疚睦肕icrosoft Visual Studio 2005和MATLAB2009a等開發(fā)工具對版權(quán)認(rèn)證保護系統(tǒng)的流程進(jìn)行了實現(xiàn)。
測試結(jié)果表明，該系統(tǒng)能提供安全有效的版權(quán)認(rèn)證和保護，具有安全性、公平性、可靠性以及實用性，具有較好的應(yīng)用前景。
關(guān)鍵詞：數(shù)字水印，B/S模式，版權(quán)保護

Copyright Authentication Applications Based on Digital Watermarking Technology
Abstract With the rapid development of computer network and multimedia technology, digital media resources have become a mainstream way of information. The digital product’s characteristics are easy to edit, copy, transmit and etc. It promotes to share the information, on the contrary, it poses a thread on the digital copyright protection and the content authentication. Digital watermarking technology comes into being under the background that the traditional cryptography techniques can not solve the problem of copyright protection effectively.
Firstly, this paper gives an introduction to the research’s background and significance for the copyright certified; Then analyzing the digital watermarking technology; After that, on the basis of the application requirements for digital copyright protection system analysis, this paper proposes a scheme of digital image copyright protection system based on B/S(Browser/ Server)Mode. The system is divided into management, watermark process and copyright certification of these three modules, taking advantage of digital image representation algorithm to make watermark embed and extracted; Finally, making copyright protection system processes come true via Microsoft Visual Studio 2005 and MATLAB2009a.
The test results show that the system can provide safe and effective authentication and copyright protection, with security, fairness, reliability and practicality, it owns a good prospect.
Key words：Digital watermarking，B/S(Browser/Server）Mode，copyright protection

目錄
第一章 緒論 1
1.1研究背景 1
1.2研究意義 2
1.3論文組織 3
第二章 數(shù)字圖像水印技術(shù) 4
2.1數(shù)字水印技術(shù)介紹 4
2.1.1數(shù)字水印分類 4
2.1.2數(shù)字水印特點 5
2.1.3數(shù)字水印的系統(tǒng)模型 5
2.1.4數(shù)字水印主要應(yīng)用領(lǐng)域 6
2.2數(shù)字圖像水印技術(shù) 7
2.2.1空域圖像水印技術(shù) 7
2.2.2 DCT域圖像水印技術(shù) 8
2.2.3小波域圖像水印技術(shù) 8
2.2.4脆弱圖像水印技術(shù) 9
2.3圖像數(shù)字水印的性能評估 9
2.3.1性能評估中所使用的攻擊方法 9
2.3.2水印性能評估描述 10
第三章 數(shù)字圖像版權(quán)保護系統(tǒng)的總體設(shè)計 11
3.1系統(tǒng)總體設(shè)計思路 11
3.2系統(tǒng)總體模塊設(shè)計 12
3.3水印算法設(shè)計 13
3.3.1水印嵌入和提取驗證的流程設(shè)計 13
3.3.2水印算法設(shè)計 13
3.4數(shù)據(jù)庫結(jié)構(gòu)設(shè)計 14
3.4.1用戶表user設(shè)計 14
3.4.2圖片表picture設(shè)計 15
3.5數(shù)字圖像版權(quán)保護系統(tǒng)的動態(tài)建模 15
第四章 數(shù)字圖像版權(quán)保護系統(tǒng)的實現(xiàn)與分析 17
4.1系統(tǒng)開發(fā)環(huán)境 17
4.2數(shù)字圖像版權(quán)保護系統(tǒng)實現(xiàn) 17
4.2.1版權(quán)保護系統(tǒng)界面實現(xiàn) 17
4.2.2水印算法實現(xiàn) 17
4.2.3 MATLAB與ASP.NET接口實現(xiàn) 20
4.2.4數(shù)字圖像版權(quán)保護系統(tǒng)測試 21
4.3數(shù)字圖像版權(quán)保護系統(tǒng)分析 23
4.3.1盜版侵權(quán)問題 23
4.3.2鑒定版權(quán)歸屬問題 24
4.3.3系統(tǒng)安全性分析 25
4.3.4系統(tǒng)公平性分析 25
第五章 總結(jié)與展望 26
5.1總結(jié) 26
5.2展望 26
致謝 27
參考文獻(xiàn) 28