File list:
cor watermarking
...............\cor_embed.m
...............\cor_embed_mod.m
...............\cor_recover.m
...............\cor_recover_mod.m
...............\cor_watermarked.bmp
...............\cor_watermarked_mod.bmp
...............\pn_period.m
...............\pn_test.m
...............\psnr.m
...............\_copyright.bmp
...............\_key.bmp
...............\_lena_std_bw.bmp
