NDLI: Generation of Hierarchical Dictionary for Stroke-order Free Kanji Handwriting Recognition Based on Substroke HMM (2003)

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Generation of Hierarchical Dictionary for Stroke-order Free Kanji Handwriting Recognition Based on Substroke HMM (2003)

Content Provider	CiteSeerX
Author	Hiroshi, Mitsuru Nakai Shimodaira, Hiroshi Sagayama, Shigeki
Description	This paper describes a method of generating a Kanji hierarchical structured dictionary for stroke-number and stroke-order free handwriting recognition based on substroke HMM. In stroke-based methods, a large number of stroke-order variations can be easily expressed by just adding di#erent stroke sequences to the dictionary and it is not necessary to train new reference patterns. The hierarchical structured dictionary has an advantage that thousands of stroke-order variations of Kanji characters can be produced using a small number of stroke-order rules defining Kanji parts. Moreover, the recognition speed is fast since common sequences are shared in a substroke network, even if the total number of stroke-order combinations becomes enormous practically. In experiments, 300 di#erent stroke-order rules of Kanji parts were statistically chosen by using 60 writers' handwritings of 1,016 educational Kanji characters. By adding these new stroke-order rules to the dictionary, about 9,000 variations of di#erent stroke-orders were generated for 2,965 JIS 1st level Kanji characters. As a result, we successfully improved the recognition accuracy from 82.6% to 90.2% for stroke-order free handwritings.
File Format	PDF
Language	English
Publisher Date	2003-01-01
Publisher Institution	In Proc. of Int. Conf. on Document Analysis and Recognition (ICDAR2003
Access Restriction	Open
Subject Keyword	Di Erent Stroke Sequence Kanji Part Stroke-order Free Handwriting Common Sequence New Reference Pattern Recognition Speed Di Erent Stroke-order Rule Total Number Stroke-order Variation Hierarchical Dictionary Kanji Hierarchical Educational Kanji Character Stroke-order Combination Recognition Accuracy Stroke-order Rule Substroke Hmm New Stroke-order Rule Stroke-based Method Small Number Level Kanji Character Large Number Di Erent Stroke-orders Substroke Network Kanji Character Stroke-order Free Kanji Handwriting Recognition
Content Type	Text
Resource Type	Article

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