Video mosaicing based on structure from motion for distortion-free document digitization

Authors:
Akihiko Iketani;Tomokazu Sato;Sei Ikeda;Masayuki Kanbara;Noboru Nakajima;Naokazu Yokoya
Affiliations:
NEC Corporation, Ikoma, Nara, Japan and Nara Institute of Science and Technology, Ikoma, Nara, Japan;NEC Corporation, Ikoma, Nara, Japan and Nara Institute of Science and Technology, Ikoma, Nara, Japan;Nara Institute of Science and Technology, Ikoma, Nara, Japan;NEC Corporation, Ikoma, Nara, Japan and Nara Institute of Science and Technology, Ikoma, Nara, Japan;NEC Corporation, Ikoma, Nara, Japan;NEC Corporation, Ikoma, Nara, Japan and Nara Institute of Science and Technology, Ikoma, Nara, Japan
Venue:
ACCV'07 Proceedings of the 8th Asian conference on Computer vision - Volume Part II
Year:
2007

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Abstract

This paper presents a novel video mosaicing method capable of generating a geometric distortion-free mosaic image using a hand-held camera. For a document composed of curved pages, mosaic images of virtually flattened pages are generated. The process of our method is composed of two stages : real-time stage and off-line stage. In the realtime stage, image features are automatically tracked on the input images, and the viewpoint of each image as well as the 3-D position of each image feature are estimated by a structure-from-motion technique. In the offline stage, the estimated viewpoint and 3-D position of each feature are refined and utilized to generate a geometric distortion-free mosaic image. We demonstrate our prototype system on curved documents to show the feasibility of our approach.