A New Chromatic Color Image Watermarking and Its PCA-Based Implementation. - Thai Duy Hien; Zensho Nakao; Kazuyoshi Miyara; Yasunori Nagata; Yen-Wei Chen 001 (ICAISC, 2006)

Multichannel Color Image Watermarking Using PCA Eigenimages. - Kazuyoshi Miyara; Thai Duy Hien; Hanane Harrak; Yasunori Nagata; Zensho Nakao (Intelligent Information Systems, 2006)

Digital watermarking based on curvelet transform. - Thai Duy Hien; Kazuyoshi Miyara; Ikeda Kei; Fath El Alem F. Ali; Yen-Wei Chen 001; Zensho Nakao (ISSPA, 2007)