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Algorithm for text page up/down orientation determination

Authors
Journal
Pattern Recognition Letters
0167-8655
Publisher
Elsevier
Publication Date
Volume
21
Issue
4
Identifiers
DOI: 10.1016/s0167-8655(99)00161-0
Keywords
  • Facsimile Document Processing
  • Text Image Orientation
  • Upright/Inverted Text Discrimination
Disciplines
  • Computer Science

Abstract

Abstract We present an algorithm that operates on a bit-mapped text pattern array to determine the up/down orientation of the page, that is, whether the page is upright or inverted. The algorithm exploits an up/down asymmetry of passages of text composed of roman letters and arabic numerals. A computer program that implements the algorithm is listed. Experimental results from electronically received facsimile (fax) pages verify the effectiveness of the algorithm.

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