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.
Conformal deskewing of non-planar documents
2005-01-01
1302032 byte
Conference paper
Electronic Resource
English
Document Restoration Using 3D Shape: A General Deskewing Algorithm for Arbitrarily Warped Documents
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