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Optical Engineering

Separation of single- and double-touching handwritten numeral strings
Author(s): Zheru Chi; Mark Suters; Hong Yan
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Paper Abstract

To improve overall separation and classification performance for touching handwritten numeral strings, we have to deal with double-touching problems, which occur particularly for some combinations of digits. We propose a strategy to separate single- and double-touching numerical strings. The proposed technique includes: using two-cut links to deal with double-touching problems; using weighted geometric-property measures to rank both one- and two-cut links; and using a rejection scheme to reject poor links at both ranking and recognition stages. Two-cut link pairs that join the high-curvature points in inner contour(s) to those in the external contour are considered when all one-cut links that join the upper and the lower external contours fail to separate them. All combinations of one- and two-cut links are ranked according to weighted geometric-property measures, and the top links are chosen and tested by the recognition system. Experimental results on the National Institute of Standards and Technology database show that our system for solving both single- and double-touching problems compares favorably with the other techniques tested.

Paper Details

Date Published: 1 April 1995
PDF: 7 pages
Opt. Eng. 34(4) doi: 10.1117/12.196551
Published in: Optical Engineering Volume 34, Issue 4
Show Author Affiliations
Zheru Chi, Univ. of Sydney (Australia)
Mark Suters, Univ. of Sydney (Australia)
Hong Yan, Univ. of Sydney (Australia)


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