19 January 2009 Layout-free dewarping of planar document images
Author Affiliations +
Abstract
For user convenience, processing of document images captured by a digital camera has been attracted much attention. However, most existing processing methods require an upright image such like captured by a scanner. Therefore, we have to cancel perspective distortion of a camera-captured image before processing. Although there are rectification methods of the distortion, most of them work under certain assumptions on the layout; the borders of a document are available, textlines are in parallel, a stereo camera or a video image is required and so on. In this paper, we propose a layout-free rectification method which requires none of the above assumptions. We confirm the effectiveness of the proposed method by experiments.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Masakazu Iwamura, Ryo Niwa, Akira Horimatsu, Koichi Kise, Seiichi Uchida, Shinichiro Omachi, "Layout-free dewarping of planar document images", Proc. SPIE 7247, Document Recognition and Retrieval XVI, 72470X (19 January 2009); doi: 10.1117/12.806122; https://doi.org/10.1117/12.806122
PROCEEDINGS
10 PAGES


SHARE
RELATED CONTENT


Back to Top