基于OSG的红外动态场景仿真

第42卷增刊1红外与激光工程2013年6月Vol．42No．S1InfraredandLaserEngineeringJun．2013OSG黄建峰1，范小礼2，王俊2(1．北京环境特性研究所，北京100854;2．光学辐射重点实验室，北京100854)采用基于开源三维渲染引擎OpenSceneGraph(OSG)平台，利用目标与背景的几何特征模型、红外辐射特征模型、大气辐射传输模型、探测器光电转换模型、探测器噪声模型等，实现了一个参数可调的红外场景仿真系统。它能根据战情及被试装备的视角方向生成红外侦察告警注入式和辐射式仿真试验所需的红外场景图像。红外场景仿真;渲染引擎;OSGTN219TP391．9A1007－22762013S1－0018－06InfrareddynamicscenesimulationbasedonOSGHuangJianfeng1FanXiaoli2WangJun21．BeijingInstituteofEnvironmentalFeaturesBeijing100854China2．ScienceandTechnologyonOpticlRadiationLaboratoryBeijing100854ChinaAbstractBasedontheprinciplesofinfraredimagingsystema3Dinfraredsimulationframeworkwasimplemen-tedwithOSGrenderingengineinthispaper．Itincludesthegeometriccharacteristicsofthetargetandbackgroundmodeltheinfraredradiationcharacteristicsofthemodelatmosphericradioactivetransfermodelthedetectorphotoelectricconversionmodelandthedetectornoisemodel．ThissystemcangeneratetheIRsceneimagevaryingwiththetargetspeedweatherandthelocationofobserver．KeywordsinfraredscenesimulationrenderingengineOSG2013－01－112013－02－151988－。[e-mail]增刊1黄建峰等:基于OSG的红外动态场景仿真190、1。2123/。OSG。1OSGAPIAPI3。OSG。OSG1OSGLGPL2OSG、、OpenGLOpenGL3OSGBoundingVolumeHier-archy。BVH、、。4OSGGLSLGPU。2、、、。1。1Fig．1Structureofthesimulationsystem、、、、、、。、、、、。2。、、。红外与激光工程第42卷202Fig．2Workflowofthesimulationsystem2．1、、、、、、。、、。。。。。vt。3。Tijvitj。3Fig．3TwodimensionallinearinterpolationTvtTvt=1－βt1－αvTij+αvTi+1j+βt1－αvTij+1+αvTi+1j+11αvβtαv=v－vivi+1－vi2βt=t－tjtj+1－tj32．24。、、、、、、、。1LOWTRAN、、5。2。44a～4d、、、。。增刊1黄建峰等:基于OSG的红外动态场景仿真214Fig．4Effectsoftheatmosphericradioactivetransfermodel。PieterA．Jacobs6。SkyDome。5。。5Fig．5Simulationofthesky2．37。。1。。。。G=k*L+b。GLk、b。。6k=20b=10k=50b=10。6Fig．6Differentcalibrationcoefficientoftheconversion2。。noise=noise_m+sqrtnoise_var*randnoisenoise_mnosie_varrand。7010。7Fig．7Contrastofdifferentnoisemodel红外与激光工程第42卷2231。。。8Fig．8Terrainunderdifferentviewfiled2、、、、、、、。。910。9。10。1110km2km。9Fig．9Contrastofthesametimeindifferentseason10Fig．10Contrastofdifferenttimeinoneday3、、、、、。12F16F17。11Fig．11Contrastofdifferentvisibility12Fig．12Contrastofdifferenttargetmodelinthesamefieldofview43μm～5μm8μm～12μm。13Fig．13Contrastofdifferentwaveband5。14。0．6Ma0．8Ma。14Fig．14Contrastofdifferentspeed增刊1黄建峰等:基于OSG的红外动态场景仿真2341a1b10。1。1Tab．1SimulationtimeCombatconditionMax/msMin/msAve/msa19．631314．566114．7167b163．0819149．7397151．1366、、。1010FPS。“—”。。15。15Fig．15Contrastofsimulationimageandmeasuredimage2。。30%。5OSG“———”。。1ZhangYingDuHuijieYuHong．ModelingandcomputerscenegenerationofinfraredtargetandcelestialbackgroundJ．InfraredandLaserEngineering20063510327－330．inChinese2GuoQishengDongZhiming．BattlefieldEnvironmentSimulationM．BeijingNationalDefenceIndustryPress2005168－190．3LinKaiHuangXi．ResearchondynamicinfraredscenesimulationbasedonOGREJ．ElectronicScienceandTechnology20102347－10．inChinese4PaulMartz．OpenSceneGraphQuickStartGuideM．Louis-villeSkewMatrixSoftwareLLC200713－31．5LiuQitao．Influenceofatmosphereonsimulationofinfraredther-mal－imagerImagingJ．Infrared20062711－4．6GuJuxing．InfluenceofatmosphereoninfraredimagingsystemJ．Infrared200829339－46．7YueSongWangChenshengZhangZhijie．Real－time3DIRsim-ulationofmaritimetargetsandbackgroundsJ．Optics＆Optoe-lectronicTechnology20119439－40．