基于CUDA的实时红外辐射传输及成像仿真设计

摘要

无论是红外制导、红外遥感还是红外探测都离不开红外图像,但现阶段直接获取红外图像的方法和途径很少,大都只能实地采集.这种方法直观真实,获得的数据准确可靠,却耗费大量资源,且很可能无法直接采集;同时,进行科学或军事目的的红外图像研究,需要大量不同条件下的红外图像数据.基于以上现状,本文引入红外仿真技术,通过计算机数学仿真的手段模拟红外探测器上所成的场景红外图像,简单可行、方便快捷.在这一点上,当前主流方法多借助可见光成像原理来建模红外成像,同时采用CPU上的串行思想来开发,其成像准确性、实时性上存在一定的不足.本文基于CUDA并行思想,借助OpenGL图形处理工具,采用数学仿真的方法,重点关注的是中波红外探测器成像仿真中,由场景至探测器入瞳过程中的实时中红外辐射传输计算、入瞳处成 像及辐射数据获取的方法.%As is well known,not only infrared guidance and remote sensing,but also infrared detection,need infrared images,but there aren't more ways to get infrared images directly than on the spot,which is reliable and credible,now.However,this way might cost lots of materials,and in some occasions,we' re forbidden to get infrared images directly.Besides,when we do some research on infrared images in the purpose of scientific and military research,we need lots of infrared images in different conditions such as weather,temperature,scene and so on.Basing on this,this paper introduces the infrared simulation technology,simulating the images of infrared scene which generate on the infrared camera lens by computer mathematic simulation,which is simple,feasible,convenient and fast.However,today,the most popular way of infrared simulation is referring to the principle of visible light and developed on CPU by serial codes at the same time,which the veracity and instantaneity of aren' t satisfied.This paper focuses on the ways of the simulation of medium wave infrared camera to achieve the real-time calculation of the transmission of radiation,formation of the infrared image and obtainment of the data of radiation in the process from the real scene to the infrared camera lens,basing on parallel minds in CUDA on GPU and tools of OpenGL on image processing,by mathematic simulation and radiation link model,which is satisfied to us in the veracity and instantaneity.