Automatic Reconstruction of Plane Geometry Figures in Documents

This paper develops a SDK for reconstructing plane geometry figures in documents, which can be used in multiple cases of the education. This SDK is an indispensable function of solving plane geometry problems automatically and it can save the dear time if users use it to replace the work of drawing plane geometry figures. This SDK consists of two main components which are the recognition and the drawing of plane geometry figures. In the component of recognizing plane geometry figures, it has a set of functions that recognize all the primitive shapes of plane geometry figures from image documents and describes the recognized primitive shapes in XML or latex. In the component of drawing plane geometry figures, it has a set of functions that draw all the primitive shapes described in XML or latex and generate a final figure in JPEG. Users can just edit the XML or latex document describing the original figure to add some primitive shapes into the original figure. As you can know, the developed SDK can be added into the document editing software to enhance its function. The test results demonstrate that our SDK can recognize and draw the plane geometry figures well.