Design And Implementation Of The Hand-Painted Geometry Structured Tool For Teaching

In traditional geometry classroom, teachers need to use a blackboard and chalk even select the appropriate drawing tool to complete the work of drawing geometry, the resource consumption is large and the operation is relatively time consuming. Under the background of educational information, whiteboard has gradually gained popularity in teaching, and at the same time geometry teaching suffered a new dilemma:If you draw geometry with hand-drawn data, the accuracy will not meet the teaching needs; but drawing tools will lead to complicated operation and inconvenience interactions. Therefore, the paper designs and implements a hand-painted geometry structured tool, which can make the hand-painted geometry be structured into standard geometry and meet the needs of classroom teaching, it can solve the problem of geometry teaching.Geometry used in the classroom is special which most have obvious geometrical characteristics, such as rectangular, trapezoid, diamonds, so the paper proposed a method combined with fuzzy logic and geometry features on the basis of the sketch recognition technology, it can ensure the common geometry in classroom be recognized entirely and structured intelligently on the basis of recognition results; it extracts feature points and does the local recognition when the geometry is ordinary or combined. The specific processes are as follows:use the fuzzy logic to recognize the common eight basic elements in classroom at first, the elements which can’t be summarized to the primitive will be recognized with a combination of geometry recognition method, which recombinant output structured geometry after split elements be recognized on the basis of feature points. Through the experimental verification, the software has high recognition rate and efficiency in dealing with common geometry in classroom, which can improve the efficiency of classroom teaching, to stimulate students’ interest in learning.This paper introduces and reviews the background sketch recognition in current achievements at first; introduces the fuzzy logic algorithm and the feature point extraction method in the basis of sketch recognition knowledge; then does the work of the requirements analysis and software design from the direction of teaching design; on the basis of requirements analysis and software design, the software were developed to achieve divided into pattern recognition, graphics drawing, image editing three modules with the development platform of WPF. Finally, it evaluates the software according the experiment, show the software application scenario through a specific teaching case. Evaluation results show that the software basically meets the original design requirements. The content of this paper is the application of sketch recognition in classroom teaching, which uses the method of object-oriented programming, it can change as demand for functional expansion function, and therefore it may have sustainable development.