The Research On Real-time Simulation Algorithm Of Handwriting Based On Velocity

With the comprehensive coverage of information,various information products have entered people's study,work and life,the traditional way of relying on keyboard and mouse for man-machine interaction has not been able to meet the current manmachine interaction needs.With the popularity of touch screen,handwriting input,as a new man-machine interaction mode,is more and more popular among users because of the incomparable advantages of keyboard input.Handwriting simulation input has high real-time,the input effect restored the user's original handwriting and is widely used in teaching blackboard writing,handwriting recognition data collection and other scenarios.A good handwriting simulation method can not only meet the practical needs of teaching,but also has far-reaching significance in the inheritance of Chinese calligraphy.By studying the characteristics of writing effects in a real environment and summarizing and analyzing the experience of existing simulation methods,this paper proposes a real-time simulation algorithm for handwriting based on velocity.The simulation algorithm proposed in this paper is not only for the simulation of traditional Chinese writing brush effects After the parameter modification,it can also simulate the effect of hard pen writing.The research content of this article mainly includes the following parts.(1)Starting from the collection of handwritten handwriting,this paper proposes a distance-based handwriting sample collection method,which reduces the amount of simulation calculation without affecting the simulation effect and real-time performance.In order to solve the problem of handwriting distortion after using the second-order Bessel curve for handwriting smoothing,this paper uses bessel curve of subdivision for handwriting smoothing,so that the smoothed handwriting is closer to the original handwriting.(2)In order to adapt the simulation algorithm proposed in this paper to different writing environments,this paper abandons the pressure parameters that are often used in simulation algorithms,adopts absolute velocity to control the change of stroke thickness,and gives the quantitative relationship between velocity and stroke thickness.(3)In the shape of handwriting filling,this paper uses ellipse vector graphics to fill,avoiding the need to use texture filling to create texture libraries,picture distortion and other problems.In the handwriting filling method,this paper uses a differential idea to fill the handwriting to solve the problem of sudden stroke width.(4)In order to verify the availability of the velocity-based handwriting real-time simulation algorithm proposed in this paper,the real-time simulation algorithm is integrated into the electronic whiteboard system developed by the team,after multiple rounds of testing,and the evaluation indicators of common simulation algorithms are used.The experimental results are evaluated.Taking into account the real-time performance and simulation effects of the simulation algorithm,the velocity-based real-time handwriting simulation algorithm proposed in this paper can meet the needs of brush simulation in real-time and simulation effects,and is feasible.