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An Optimal Pixel-level Self-repairing Authentication Method for Grayscale Images under a Minimax Criterion of Distortion Reduction*

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Academic year: 2022

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Fig.  1.  Illustration  of  bin  code  (authentication  signal)  generation  and  embedding
Fig. 2. Diagram of authentication signal  matching and tampered pixel  marking (detail to be  described in Algorithm 2)
Fig. 4. Generation of stego-image from an input surveillance image. (a)  Input  image  taken  by  a  monitor
Fig. 5. Authentication result of a surveillance image taken by a monitor  with  tampered  area
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