On-line recognition of handwritten mathematical formulas via network.
Y. Sakamoto1, M. Sha1, R. Fukuda2, M. Suzuki1
suzuki@math.kyushu-u.ac.jp
1Graduate School of Mathematics
Kyushu University
2Fuculty of Engineering
Oita Universty
Japan
Abstract
The recent developments of the technology on network and computer is giving us the prospect to various new approaches in both the research and the education of mathematics. For example, an electric white board connected by network to a computer algebra system or some mathematical data base enables us to give a new style of lectures or discussions on mathematics.
However, it is true that the user interfaces of the current computer systems are not convenient to input mathematical formulas. The most frequently used TeX system, for example, is not adequate here.
In order to overcome this diffculty, we are developping a real time recognition system of handwritten mathematical formulas.
There are many researches on the recognition of one character written in a fixed frame box, but there are few researches to recognize the characters written on various places and in various sizes like in mathematical formulas. The method of our system is based on the Hidden Markov Models for the character and symbol recognition, and on the DP matchings for the segmentations of the sequence strokes into the character or symbol units. The system recognizes well the politely written mathematical formulas of the high school level.
© Asian Technology Conference in Mathematics, 1998. |
