3D Visualization Of Wheat Growth Based On Polygonal Modeling And Animation Key Frame Technique

Virtual field crop simulation modeling is an important research direction in the field of agricultural information,and it is significant to realize virtual wheat 3D visualization modeling.In this experiment,winter wheat(Zhongmai 175)is taken as the experimental object.Aiming at the problem that it is not easy to simulate the three-dimensional shape of wheat growth,wheat parametric modeling and polygon modeling technology and key frame animation technology were used.It realize the dynamic simulation of wheat growth process,build a wheat growth model with strong machine rationality and practicability,and then realize the interaction simulation of single plant wheat and population wheat in the natural environment.The research work mainly includes the following aspects:(1)Geometric modeling based on parameterized wheat.Combining the measured data of wheat organs and the images collected by digital camera in different growth periods collected from the experimental field,the morphological and structural features of real wheat were observed,the parameters of organs were measured,and the texture structure was analyzed.Based on Maya 3d modeling platform,the virtual growth morphological model of wheat was constructed by 3D polygonal modeling of the aboveground part of wheat,including wheat stem,leaf,wheat spike,wheat flower,etc.(2)In order to realize realistic rendering of wheat,a method of digital camera was proposed to observe the images of leaves,stems,ears and flowers of wheat in different growth stages.Maya texture mapping module was used for color rendering,light rendering and other realistic technology.Thus,the virtual growth of wheat in the whole growing period tended to be more real,beautiful and three-dimensional.At the same time,the virtual space model based on the real field natural environment,including land and sky,is simulated.(3)Construction of visualization model for dynamic virtual growth of single-plant wheat.Through field and pot experiments,the daily growth image of wheat was collected by a digital camera.Based on the growth characteristics of Zhongmai 175,its topological structure and growth law were analyzed,and the shape feature model,color rendering and light processing were constructed by polygon modeling.In order to simulate the dynamic growth model of single plant wheat,the key frame animation of each growth period of wheat was made.(4)Construction of visualization model for dynamic virtual growth of population wheat.Based on the dynamic simulation growth model of single plant wheat,the growth law of the experimental population wheat in the field was analyzed,and the morphological characteristic parameters of different growth periods were obtained.Combining with the factors of natural growth environment,geography and topography,key frame was inserted to establish the dynamic simulation growth model of the whole growth period of population wheat.