Dewarping of Planar Document Image without Layout Constraints
Journal
IEICE Technical Report
Presentation number
PRMU2008-233
Reviewed
Not reviewed
Date
February 2009
Research fields
Document Image Analysis
Key
Niwa2009_IEICEPRMU (id=1078)
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.
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