Simulation Of Interaction Between Spray Scene And Rice Canopy

Pesticide is widely used in the process of rice cultivation,so it is of great significance to study how to optimize the spraying method of pesticide to improve the utilization rate of pesticide.However,due to the different stages of rice,the morphological structure of different plant types is quite different.Using field experiment method to optimize pesticide spraying method is not only cumbersome,time-consuming,high cost,and accompanied by humidity,wind speed and other uncertain External factors,can not better control the overall test environment,it must find a new experimental method to replace the field experiment.In recent years,the virtual crop scene simulated by natural landscape has been common,and many scholars have used virtual model and physical combination to simulate realistic and promising virtual crops.Therefore,combined with computer graphics,the virtual model was used to simulate the plant types of different varieties of rice at different times,and then based on the physical law to simulate the spray scene of pesticide and study the interaction process of the two,so as to quickly,easily and accurately reproduce pesticide spraying The physical process.The main work of this paper is as follows:1.A method of constructing a spray model based on particle system method and smooth particle hydrodynamic method(SPH)is proposed.Firstly,the particle system is used to construct the visualization effect of the spray model,and then the natural law of the spray is simulated by the SPS method.The proposed method not only makes the spray model have better visualization effect,but also maintains the physical law of the spray scene,and also reduces the computational cost required for the spray model simulation.2.The experimental method is used to simulate the process of droplet interaction with any angle,and the physical formula of the interaction between droplet and leaf is obtained based on the experiment.It is applied from horizontal blade to applicable In any inclined blade.In addition,a new method for calculating the bounce direction of droplets is proposed,which can simulate the bouncing behavior of droplets.3.A paper presents a rice deformation method based on GPU skeleton animation.This method discretizes the existing rice plant model as skeleton and control point,preserves its original topology,and renders its deformation effect by using GPU,which improves the rendering efficiency and realizes real-time rendering.4.based on Unity5.4.0f3 game engine,using C # language programming combined with UGUI framework to achieve spray and rice interactive scene system,the use of computer graphics to achieve spray scenes and crop scenes,and the use of GUI hardware acceleration technology to achieve real-time rendering of the scene and roaming.This study provides a new idea for the modeling of the fog field,the interaction between the droplet and the blade,and the calculation of the droplet in the deposition of the canopy of the plant.It also provides a technical reference for the real-time visualization of the interaction between the plant scene and the fog field.