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A Syntactic Approach for Handwritten Mathematical Formula Recognition

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2 Author(s)
Belaid, Abdelwaheb ; Pattern Recognition and Artificial Intelligence Group, C.R.I.N., University of Nancy 1, 54506 Vandoeuvre, France. ; Haton, J.-P.

Mathematical formulas are good examples of two-dimensional patterns as well as pictures or graphics. The use of syntactic methods is useful for interpreting such complex patterns. In this paper we propose a system for the interpretation of 2-D mathematic formulas based on a syntactic parser. This system is able to recognize a large class of 2-D mathematic formulas written on a graphic tablet. It starts the parsing by localization of the ``principal'' operator in the formula and attempts to partition it into subexpressions which are similarly analyzed by looking for a starting character. The generalized parser used in the system has been developed in our group for continuous speech recognition and picture interpretation.

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Pattern Analysis and Machine Intelligence, IEEE Transactions on  (Volume:PAMI-6 ,  Issue: 1 )