21 May 2004 High-resolution video mosaicing for documents and photos by estimating camera motion
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Abstract
Recently, document and photograph digitization from a paper is very important for digital archiving and personal data transmission through the internet. Though many people wish to digitize documents on a paper easily, now heavy and large image scanners are required to obtain high quality digitization. To realize easy and high quality digitization of documents and photographs, we propose a novel digitization method that uses a movie captured by a hand-held camera. In our method, first, 6-DOF(Degree Of Freedom) position and posture parameters of the mobile camera are estimated in each frame by tracking image features automatically. Next, re-appearing feature points in the image sequence are detected and stitched for minimizing accumulated estimation errors. Finally, all the images are merged as a high-resolution mosaic image using the optimized parameters. Experiments have successfully demonstrated the feasibility of the proposed method. Our prototype system can acquire initial estimates of extrinsic camera parameters in real-time with capturing images.
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Tomokazu Sato, Sei Ikeda, Masayuki Kanbara, Akihiko Iketani, Noboru Nakajima, Naokazu Yokoya, Keiji Yamada, "High-resolution video mosaicing for documents and photos by estimating camera motion", Proc. SPIE 5299, Computational Imaging II, (21 May 2004); doi: 10.1117/12.526510; https://doi.org/10.1117/12.526510
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