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Proceedings Paper

Multiclass optical correlation filters for alphanumeric field recognition
Author(s): David P. Casasent; Srinivasan Gopalaswamy; Anand K. Iyer
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Paper Abstract

We consider the use of new distortion-invariant optical correlation filters for machine-printed OCR. Our work is unique in its treatment of a large set of different fonts, printer types, plus rotations and scale (point size) variations, and various practical issues such as printing artifacts and background noise. We detail their use in the locations and recognition of alphanumeric fluids (digits) in destination address blocks (DABs).

Paper Details

Date Published: 12 January 1993
PDF: 8 pages
Proc. SPIE 1772, Optical Information Processing Systems and Architectures IV, (12 January 1993); doi: 10.1117/12.140897
Show Author Affiliations
David P. Casasent, Carnegie Mellon Univ. (United States)
Srinivasan Gopalaswamy, Carnegie Mellon Univ. (United States)
Anand K. Iyer, Carnegie Mellon Univ. (United States)

Published in SPIE Proceedings Vol. 1772:
Optical Information Processing Systems and Architectures IV
Bahram Javidi, Editor(s)

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