| Infred(IR) Image simulation is the key techniques in current high scientific. It can reduce the cost of application using IR image. This article focus on the IR image simulation for ground objectand background. The contents include simulating IR imate of different season, weather and time using Vega software, forthermore, gain IR image by real radiant data and the rusult of above works. First, we introduce some primary knowledge, research contents and related rearch works about IR techniques and IR image simulation. Then we review the simple IR radiant theory and the transmission of the IR radiation in the air. In the last, we present the caculate method of the radiance characteristic.Simulating IR image using Vega software is a convenient means. We discuss the method of simulating IR image using Vega software by giving a simulation example. In the first, we construct a 3D model of object in the MultiGen software, then caculate the map of texture and material. Secondly, we edit a text file of atmospheric parameters and create an atmospheric database. In the last, we gain the simulation IR image in the Vega software by setting the related IR parameters.We present a new method to simulate IR image of different season, weather and time using real radiant data and the above work. The method used here is to regard the actual scene image shot by IR Thermal imagers as the input and segment it. So it can be divided into different materials. Then we use the SGI Onyx2 super image station and the visual software Vega to simulate and produce the infrared images of different materials in the condition of different seasons, weather and time. After that we use the produced images as input and simulate the actual infrared image to get the final scene images according to the analysis of radiance data of it. At end of the dissertation, the auther draws a conclusion and puts forward some key problems for gutrue works. |