Research On Infrared Target Imaging Simulation Technology Based On VieWTerra

The fusion between Infrared(IR)and Low Light Level(LLL)images can make up for the shortcomings in contrast and details of IR images,but obtaining source images take a lot of labor and materials.However IR scene simulation technology can effectively solve this problem.This paper develops the IR imaging simulation system based on vieWTerra,which can provide IR simulation video image sources for synchronous simulation and image fusion of IR and LLL images.First,this paper briefly introduces the research background,implication and main structure of this paper,and also the technologies related to the IR scene simulation.Second,this paper designs the modeling scheme of IR target imaging simulation theoretical model according to the imaging process of IR thermal imaging system,and creates complete and reliable theory models,including target zero visibility IR radiation characteristic theory model,atmospheric IR transmission characteristics model and IR sensor effects Modulation Transfer Function model.Third,according to the shape and structure of M1A2 tank,this paper creates 3D model with 3ds Max software,adding corresponding material properties and textures to the model,and uses ANSYS software to carry out on meshing,boundary conditions setting and steady-state thermal analysis in order to calculate tank temperature field distribution.Forth,on the basis of target IR radiation characteristics theoretical model and temperature field distribution,this paper creates tank 3D model and plain terrain,applies on the simulation scene by vieWTerra,and uses VS2012 combining with VC++ programming language,OpenGL graphics application interface and Opencv2 computer graphics library to complete secondary development for vieWTerra software,simulates static performance MTF and system noises of IR sensor,so as to develop IR imaging simulation system.Finally,this paper uses serial communication technology between two workstations and FPGA control panel to achieve the synchronous simulation of IR and LLL imaging simulation systems,in order to generate IR and LLL simulation video image sources in which every frame completely matches.By applying Contrast Pyramid(CP)algorithm to fuse source images and analyzing fusion results,this paper verifies the effectiveness of IR imaging simulation system,thus can provide practical and reliable IR simulation image sources for IR and LLL images fusion.