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Analysis and Reconstruction of Special Structure in Printed Mathematical Expressions

Author: WuLiHong
Tutor: TianXueDong
School: Hebei University
Course: Computer Software and Theory
Keywords: Printed mathematical formula recognition
CLC: TP391.4
Type: Master's thesis
Year: 2009
Downloads: 10
Quote: 0
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Abstract


With the development of science and technology, people of information dissemination and retrieval of the demand is higher and higher. The traditional paper literature material though is indispensable, but is not adapt to the rapid spread of information. OCR realizes from paper documents to the electronic document conversion, promote the development of information technology, but to mathematical formula recognition is still in the immature stage. Due to the mathematical formula technology is an important part in the literature, so caused many researchers to mathematical formula recognition attention. Printed mathematical formula recognition process is mainly divided into four parts: formula extraction, formula segmentation and recognition, formula structure analysis, reconstruction formula. Structure analysis is printed mathematical formula recognition key, reconstruction is printed mathematical formula recognition important steps. This article through to stack symbol, hat symbol and matrix and the structure of the special formula research and analysis, induction, summarizes the characteristics of these formulas special structure and grammatical information, design the corresponding structure analysis algorithm, and the depth traversal strategy design a mathematical formula special structure of the recursive reconstruction algorithm. For printed mathematical formula special structure analysis and reconstruction results show that the effectiveness of the proposed algorithm.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices
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