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Tree modeling virtual reality research hot spots , but the genetic structure of trees and growth environment is complex , leading to a tree modeling process is cumbersome and complex . Natural scenes demanding real-time and fidelity , at this stage of the trees modeling process accuracy, slow rendering bottleneck limiting the application of three-dimensional trees in the virtual scene . From the above point of view based on Gaussian mixture model and iterated function combined single image tree modeling , and simulated trees swaying in the wind scene . First, the traditional image segmentation method is vulnerable to interference , stability is not strong , the defects of low accuracy , improved image segmentation method based on Gaussian mixture model for image classification from a statistical point of the image pixels , the pixels in the image point mean and Gaussian mixture model to match the pixel type is determined according to the matching rules , and the pixel is assigned to the corresponding model , from the pixel domain point of view , to solve the shortcomings of the traditional low accuracy of image segmentation method . Second , trunk shape adjustment poor interaction and fidelity , not high shortcomings , proposed a combination of modeling methods iterated function systems and image segmentation , classification information of the pixels in the image generation and image trees close to three - dimensional trunk , and then use tree growth self-similarity derived secondary branches , change the parameters of the branches can generate new trees , improved speed and fidelity . Branches render at the same time , the use of the kinetic theory of computer simulation of trees swaying in the wind , for the non - peripheral branches of the small amplitude static analysis to calculate their deformation , and for large amplitude peripheral branches of the movement is based on the wave theory , can control the size of the swing through the interface , to achieve the purpose of interaction . Finally, the OpenGL graphics editing features , the corresponding software development system in VC 6.0 platform design , three-dimensional modeling of the trees and verify the feasibility of the above theory , to achieve fidelity and real - time on optimization , and ultimately used in national 863 project \
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