This novel DCT-based approach has three keys, the doubly stochastic matrix along with its coefficients are used to embed watermarking and play the role of private keys, while summation of transformation matrix of watermarking serves as public key.

 
  • 在水印的嵌入與檢測過(guò)程中用到了 3個(gè)密鑰 ,雙隨機矩陣和嵌入尺度作為秘密鑰保證了水印嵌入的安全性 ,DCT系數矩陣之和則作為公開(kāi)鑰用于水印信息的部分認證 文中算法實(shí)現了將圖像作為水印信息隱藏到載體圖像中 ;
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