隨著網際網路不斷的發展，多媒體資訊的保護與認證日趨重要，而數位浮水印便是用來解決此一問題的有效技術。
本論文提出一個建立在人眼視覺系統的顯著資訊數位浮水印技術，並且以結合空間域以及頻率域的方式，來提高影像之嵌入容量，但在視覺上達到不易被察覺的嵌入效果，以及應用賽局理論建立競賽機制，來分析控制嵌入浮水印後影像的品質與浮水印嵌入的強度，在影像品質與嵌入強度之間取得平衡；最後利用浮水印的特性，可以令接收端對影像內容之認證。
由實驗結果得知，我們提出的方法可以有效的抵抗JPEG壓縮，達到浮水印的保護與影像內容的認證，同時保有影像的品質。

In this paper, we proposed a novel watermark scheme of copyright protection to obtain an acceptable image quality and to improve the capacity of data hiding. To achieve above goals, our proposed watermark scheme uses the saliency model of human visual system to decide the embedding positions of the host image for reducing the visual distortion. The watermark is embedded in the frequency domain for authentication and in the spatial domain for data hiding. We apply the game theory to obtain optimal quantization step size for each domain. By game theoretic analysis, we get Nash equilibrium as the best strategy for the quality of watermarked image and the robustness of the embedded watermark.

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