P. Loo

Digital watermarking using complex wavelets

P. Loo, N. Kingsbury, P. Loo, 2000, Proceedings 2000 International Conference on Image Processing (Cat. No.00CH37101).

Motion-estimation-based registration of geometrically distorted images for watermark recovery

Nick G. Kingsbury, Patrick Loo, N. Kingsbury, 2001, IS&T/SPIE Electronic Imaging.