Mathematical formula extraction method from printed document based on fuzzy classification
Nan Hao · Journal of Computer Applications · 2007
Process of mathematical formula extraction from printed document is a basal step.Most of the available extraction methods assume that the regions containing mathematical formulas are known.An algorithm to extract isolated mathematical formulas by introducing fuzzy classification theory was described.Six features,such as degree of irregularity,width-to-height ratio and density ect,were selected from lots of data that came from training samples counted and analyzed,thereby the rule of fuzzy classification was built to handle isolated mathematical formula lines,text lines and title lines,so mathematical formula extraction was realized.The experimental results indicate that this method could obtain favorable veracity and good robustness.