Robust image watermarking on the DCT domain. - Wen-Nung Lie; Guo-Shiang Lin; Chih-Liang Wu; Ta-Chun Wang (ISCAS, 2000)

Blind Compressed-Domain Watermarking for MPEG-Encoded Videos. - Wen-Nung Lie; Chih-Liang Wu (Communications and Multimedia Security, 2001)