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網路多媒體數位浮水印及其應用之研究

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Figure 3.1: Curves of (x − 112) 2 + (x + 5) 2 (curve 1), (x − 112) 2 + (x − 107) 2 + (x + 5) 2 (curve 2) and (x − 112) 2 + (x − 107) 2 + (x + 1) 2 + (x + 5) 2 (curve 3)
Figure 3.2: Results of applying watermark detection process to 58600 watermarked and non-watermarked images
Figure 3.3: Results of applying watermark detection process to six watermarked and non-watermarked test images
Figure 3.6: Results of watermark detection after Gaussian filtering and sharpening
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