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Table 6 PSNR values for some test images.

From: Reversible Watermarking Techniques: An Overview and a Classification

Test image PSNR of marked image (dB) Test image PSNR of marked image (dB)
Lena 43.42 Peppers 43.46
Baboon 44.48 Barbara 43.45
Boat 43.47 Pentagon 43.46