本研究主要目的為提出一個適合點矩陣全像片的浮水印嵌入方法，應用於表現立體的全像影像中，藉由影像在誤差擴散的演算過程中，以邏輯運算的方式將數位浮水印整合於半色調影像中，利用擬亂數所形成之兩階圖形與影像進行相關運算，進行浮水印的嵌入動作。經由全像製版機實際輸出之全像片，除了能表現立體效果外，亦具有防偽的功能，而所嵌入之浮水印在經過雜訊、裁切及抽取行列之攻擊後，仍能將部份浮水印還原。

The objective of this research is to propose a suitable watermarking method for the dot matrix hologram to display 3D image. Error diffusion and pseudo random number are used to embed watermark into halftone image, and then watermarked image is integrated into a 3D holographic image. After outputting the encoded hologram, this holographic image is captured and the watermark is extracted by digital image processing. The result shows that it is feasible to embed watermark in the 3D holographic image. Watermarked 3D-hologram possesses both artistic quality, and anti-counterfeit function.

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