The FRFT has signal representation property both in space and frequency domain.The original image and the wate-rmark is transformed with different orders to improve watermarking security.

 
  • 分數傅里葉變換具有空域和頻域雙域表達能力,可以對原始圖像和水印信號分別進(jìn)行不同階次的分數傅里葉變換以增強水印安全性。
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