针对室内虚拟漫游的特点，对现有的全局光照模型的算法进行改进，并通过演示系统对改进后的效果加以验证。
According to indoor walkthrough's feature, we improve existing global illumination model's algorithm and check improved results by experimental system.
利用全局光照模型实现对三维形体的绘制，并利用大规模点模型对所提出的简化方法进行了试验，试验结果证明了方法的有效性。
Global illumination is used to render 3d models. The proposed simplification method is tested using largescale point data, and the results verify its effectiveness.
其次对模型加入了帧间处理使其可以适应全局的快速光照变化。
Then, the frame disposal was joined to the model so that it can adapt to deal with the rapid global changes in light.
其次对模型加入了帧间处理使其可以适应全局的快速光照变化。
Then, the frame disposal was joined to the model so that it can adapt to deal with the rapid global changes in light.
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