Fig. 3
From: Secure self-recovery watermarking scheme for error concealment and tampering detection

Original dithered versions of each color channel of the image Lena (left) and the corresponding split-flip versions (right)
From: Secure self-recovery watermarking scheme for error concealment and tampering detection
Original dithered versions of each color channel of the image Lena (left) and the corresponding split-flip versions (right)