摘要
在網路不斷進步的環境下，多媒體內容的認證日趨重要。半脆弱型浮水印技術同時保有強韌型浮水印與脆弱型浮水印的特性，不僅可以對接收端做影像內容之認證，也可偵測出被惡意竄改的區域。
此外，賽局理論也已廣泛應用在影像處理上。在本篇論文中，我們提出了一個完整的半脆弱型浮水印的影像認證系統，並應用賽局理論分析來控制嵌入浮水印後影像的品質與浮水印嵌入的強度。利用賽局的理論與機制，我們可以得到Nash 均衡解來做為最佳嵌入浮水印的策略。不僅可以得到高準確度的認證，也同時保有影像的品質。
由實驗結果得知，我們提出的方法有高準確度的影像認證、可以成功的偵測出被竄改的區域且能對抗JPEG壓縮與AWGN的攻擊。

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