Conformal deskewing of non-planar documents

This paper presents an approach that uses conformal mapping to parameterize a document's 3D shape to a 2D plane. Using this conformal parametrization, a restorative mapping between an image of the distorted document and a "flattened" representation of the document can be computed and...

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Bibliographic Details
Published in2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05) Vol. 1; pp. 998 - 1004 vol. 1
Main Authors Brown, M.S., Pisula, C.J.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2005
Subjects
Cameras
Computer Society
Conformal mapping
Image reconstruction
Image restoration
Mathematical model
Optical coupling
Shape
Shearing
Surface reconstruction
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Summary:This paper presents an approach that uses conformal mapping to parameterize a document's 3D shape to a 2D plane. Using this conformal parametrization, a restorative mapping between an image of the distorted document and a "flattened" representation of the document can be computed and used to deskew the image. Our experiments show that arbitrarily distorted documents can be restored to within a single pixel of their true planar format. In addition, surface points can be constrained to map to specified locations in the restored 2D plane.
ISBN:0769523722
9780769523729
ISSN:1063-6919
1063-6919
DOI:10.1109/CVPR.2005.110