Extraction Method of Graph Elements in Mathematical Graphs

Abstract

Tactile graphics are useful for visually impaired students when they study mathematics and science. However, producing tactile graphics are not simple task. An intelligent computer-aided system for assisting the production of tactile graphics is needed. To develop such a system, research on mathematical graph recognition techniques is needed. This paper focuses on a method of mathematical graph recognition. A mathematical graph includes graph elements such as rays representing the x-axis and the y-axis, straight line segments or curves representing functions or equations. These graph elements are often overlapped to each other. This paper discusses a method of extracting and classifying such graph elements from the overlapped graph element.