臺灣博碩士論文加值系統

電腦網路的普及化，數位資料的運用及管理益顯重要。其中，著作權的維護與判別，更是課不容緩的議題。浮水印技術對於多媒體的資訊隱藏，一直是個不錯且實用的解決管道。它不僅可適當保有原貌，同時可嵌入版權宣告。對於合法的使用者及資料擁有者來說，都可獲致一定程度的保障。在本篇論文中，我們針對靜態影像，利用圖點間的關聯性與灰階編碼，提出一套結合條碼系統的演算法。除了毋須藉由任何輔助，取出隱藏的條碼資料，作為線上即時的判讀應用外，另提供完全彈性的獨立浮水印切割模式，可同時套用不同函數，以防止各式惡意的攻擊和破壞，作為法律上著作權的鑑定之用。而基於條碼的特色與簡易的開放式演算法設計，若沿用現有的登錄體制，並增設相關的產品類別編碼，對於網路上的影像使用與電子商務應用，將有著很大的幫助及便利。

Base on Internet and computer generalization, it is more important for digital information usage and management, especially for protection of copyright. Watermarking is the one of practical solutions. It not only hides data imperceptibly, but also supports security. Both legal user and owner can acquire well indemnification. In the thesis, we offer bar code-based algorithms and gray-scale coding to approach still-image watermark. It is easy and flexible to embed/extract watermark without any adjuncts, and resists different attack with specific functions. With bar code system and open algorithm, it will be convenient for e-commerce and image application

第１章 概論1
１-１目的與預期成果1
１-２假設與限制2
１-３論文特色2
１-４系統方塊圖3
１-５論文結構3
第２章 相關的基礎理論5
２-１數位浮水印的介紹5
２-２可能的攻擊模式7
２-３常見的數位浮水印技巧10
２-４系統的安全性探討14
２-５評估標準(Benchmark)項目15
第３章 演算法設計17
３-１理論與構想17
３-２符號與標示定義19
３-３內嵌(Embedded)演算法21
３-４取出(Extraction)演算法22
３-５檢測(Detection)演算法23
３-６修補(Recovery)演算法24
３-７調整(Adjustment)演算法25
第４章 實作分析與探討27
４-１測試環境設定27
４-２參數設定28
４-３分析與比較30
第５章 結論與展望46
５-１相關應用46
５-２安全性探討47
５-３理想的條碼浮水印制訂48
５-４延伸的發展49
參考文獻50
重要名詞 中英對照53

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