海市蜃楼现象的真实感绘制

虚无飘渺的海市蜃楼是一种非常奇妙的自然现象，其是由特定条件下大气的折射和全反射引起的．文中提出了一种对海市蜃楼现象进行建模与绘制的新方法：通过分析不同类型海市蜃楼的成因，建立了对应的不同大气温度变化模型；提出了基于大气重力波模型的海市蜃楼动态变化模型；考虑环境对海市蜃楼的影响，对海市蜃楼的整体进行绘制；在此基础上，绘制出不同条件下不同海市蜃楼的真实感场景，包括海洋、沙漠、公路上的蜃景，并模拟了蜃景的动态变化．

Photorealistical Modeling and Rendering of Mirage Scene

Dynamic mirages are very beautiful nature phenomena, which are caused by the atmospheric refraction and total internal reflection in some special conditions. In this paper, through analyzing the physical formation theory of different types of mirages, the authors establish the corresponding models of atmospheric temperature change. Then a dynamic model based on the atmospheric gravity waves is introduced to simulate the dynamic change of mirage. Considering the effect of environment, the whole scene of mirage is realistically rendered. Finally, the different types of dynamic mirages under different conditions, including mirages on ocean surface, in desert, and on concrete road, are realistically rendered, including dynamic change of mirages.