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A Copyright Protection Scheme for Gray-Level Images Based on Image Secret Sharing and Wavelet Transformation

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Academic year: 2021

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Fig. 3 shows the block diagram of the proposed
Fig. 5 shows the proposed ISS scheme. Table 1  lists the mapping table used in the proposed ISS
Fig. 6 shows an example of the result after the  watermark reduction.
Table 2 lists the experimental results (the PSNR  results denote the quality of “Lena” after image  processing operations)

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