Masanori Dainaka Shinta Nakayama Isao Echizen Hiroshi Yoshiura Dual-Plane Watermarking for Color Pictures Immune to Rotation, Scale, Translation, and Random Bending. 93-96 2006 conf/iih-msp/2006 IIH-MSP http://doi.ieeecomputersociety.org/10.1109/IIH-MSP.2006.90 db/conf/iih-msp/iih-msp2006.html#DainakaNEY06