影像監控作業一

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影像監控作業一. B963040017 劉品賢. Bitplane 方法. 在空間域藏入浮水印將原本的灰階值從 0~7 分成八個平面以 0 為 LSB ， 7 為 MSB 兼顧可以抗破壞與不可見把浮水印藏在第二個平面. Bitplane 藏浮水印. 從 HSNR 最低到最高排. DCT 轉換. 在頻率域做的浮水印特別注意不能把原本是 0 的係數改掉 PSNR=36.5825. DCT 轉換後取出的浮水印.

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Aug 24, 2014

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影像監控作業一

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影像監控作業一 B963040017劉品賢
Bitplane方法 • 在空間域藏入浮水印 • 將原本的灰階值從0~7分成八個平面 • 以0為LSB，7為MSB • 兼顧可以抗破壞與不可見 • 把浮水印藏在第二個平面
Bitplane藏浮水印
從HSNR最低到最高排
DCT轉換 • 在頻率域做的浮水印 • 特別注意不能把原本是0的係數改掉 • PSNR=36.5825
DCT轉換後取出的浮水印

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