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Metric rectification to estimate the aspect ratio of camera-captured document images

Title
Metric rectification to estimate the aspect ratio of camera-captured document images
Authors
Park J.Lee B.-U.
Ewha Authors
이병욱박준희
SCOPUS Author ID
이병욱scopus; 박준희scopus
Issue Date
2009
Journal Title
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
ISSN
0302-9743JCR Link
Citation
vol. 5876 LNCS, no. PART 2, pp. 283 - 292
Indexed
SCOPUS scopus
Abstract
Document images from mobile phone cameras and digital cameras suffer from geometric distortion; therefore distortion correction is desired for better character recognition. We propose a method to calculate the aspect ratio of planar documents using 3D perspective projection of quadrangles without using vanishing points. The proposed method is based on estimation of direction of a pair of parallel lines from their projected image. We verify the accuracy of our method from experimental results at various viewing angles. Our contribution can be applied to increase the character recognition rate by compensating for distorted documents with the accurate aspect ratio. © 2009 Springer-Verlag.
DOI
10.1007/978-3-642-10520-3_26
ISBN
364210519X; 9783642105197
Appears in Collections:
엘텍공과대학 > 전자공학과 > Journal papers
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