Study Of Kinematics Simulation Based On Handwritten Sketch Recognition

With the popularity of intelligent electronic devices,the computer-aided teaching has become the most commonly used teaching method,and it can help students to learn the knowledge on the textbook effectively.In the physics courses,the abstract of curriculum together with the difficulty of understanding it make students cannot master the knowledge well through the diagrams.It is very useful for physical study to use computer to simulate the physical process.Based on the analysis of the common institutions in the teaching of kinematics,the thesis analyzes 16 kinds of link-diagrams to summarize the constraint relations among the links,to realize the recognition of handwritten mechanism diagrams and the simulation of the movement process.The constituent elements of the link diagrams in this paper can be divided into seven categories:straight line,polyline,circle,point,arc,rectangle and triangle.The proposed link recognition algorithm is based on the recognition of the handwritten strokes to primitives,and the recognition rate of the 16 kinds of links is 93.25%.Based on the analysis of the drawing habits of the users,the paper establishes the constraint relation which can meet the user's intention.The links' position in the mechanical diagram are corrected,and then realizes the simulation of the movement process with the help of 2D physics engine.The experimental results show that the method can identify the handwritten kinematic links and correct the constraint relation between them.And then we realize the identification of the whole motion mechanism and simulate the motion of the mechanism.