Akihiko Iketani Tomokazu Sato Sei Ikeda Masayuki Kanbara Noboru Nakajima Naokazu Yokoya Video Mosaicing Based on Structure from Motion for Distortion-Free Document Digitization. 73-84 2007 conf/accv/2007-2 ACCV (2) http://dx.doi.org/10.1007/978-3-540-76390-1_8 db/conf/accv/accv2007-2.html#IketaniSIKNY07