Takao Nakamura Atsushi Katayama Masashi Yamamuro Noboru Sonehara Fast Watermark Detection Scheme from Camera-captured Images on Mobile Phones. 543-564 2006 20 IJPRAI 4 http://dx.doi.org/10.1142/S0218001406004818 db/journals/ijprai/ijprai20.html#NakamuraKYS06