【摘要】 针对建筑物场景红外仿真真实性差、对国外软件依赖性强的现状,提出了一种新的适用于大规模建筑物场景自动建模及红外仿真的方法。该方法利用Google Earth提供的高分辨率航片中的阴影和地形信息,结合OpenFlight API自动建立建筑物场景三维模型,解决了数字高程数据、楼层数据缺失条件下的建模难题;通过对航片中不同城市地物的分割建立材质标号图像,利用理论分析的方法建立了建筑物场景中不同地物的红外辐射特征方程,离线生成了零视距红外纹理,并增加大气以及探测器作用效果,提高了红外场景的描述细节和真实性。更多还原

【Abstract】 Considering the unsatisfied authenticity of infrared simulation and the strong dependence on foreign software in domestic,a new method of urban scene infrared simulation is proposed. Firstly,without any prior knowledge about the DEM and building height in the urban scene,a solution is proposed that how to construct 3D city models based on OpenFlight API by using shadows and terrain information extracted from Google Earth aerial photo; Secondly,a series of material index image is obtained by segmenting the aerial photo,then a infrared radiation equation is obtained by theoretically analyzing the infrared characterization of different ground buildings in the urban scene; Furthermore the problem of computing the infrared radiation property and generating the zero-sighting infrared texture offline is solved. Finally,the atmosphere and detector effects are also considered in the simulation process,which improve the realistic description of the infrared scene in detail.更多还原