A Robust Watermarking Scheme for Online Multimedia Copyright Protection Using New Chaotic Map

Algorithm 2

Inverse watermarking procedure is comprised of three chaotic maps with the help of a 4 4 S-Box.

Inputs: Watermarked image, 4 4 S-Box, piece wise map, td-ercs map, EL map, and secret

keys:.

Output: Inverse Watermark image.

fordo

fordo

Endfor

Endfor