Material Library

Physics-based signature prediction starts with material-encoded scene geometry. SigSim employs a Material Systems Concept to facilitate physical property attribution throughout the synthetic environment to support physics-based signature phenomenology modeling.  It enables the “packaging” and assignment of appropriate physical property data needed for signature synthesis from any scene element.  It has been adopted by the Synthetic Environment and Data Representation and Interchange Specification (SEDRIS) Program’s Environmental Data Coding Specification (EDCS) and is being considered for implementation as a SEDRIS-originated ISO standard for sensor simulation.

Examples of Material Systems include oak-bark-over-living-wood, camouflage-painted-armor-plating-on-insulated-crew-compartment, or grassy-field-over-topsoil-over-clay.

 

 

 Material System Concept 

 Material = Homogenous composition of matter with specific values of intrinsic (context-independent) physical properties

 Layer = 1 or more materials, each of arbitrary aggregate mass % in the layer

 1D Material System = Set of layers of arbitrary thickness, with context-dependent boundary conditions

 Provides "hook" for physical property attributions throughout the terrain

 Concept incorporated in EDCS

  

In this design, a Material System (MS) is a 1-dimensional, N-layered set of raw material compositions, with context-dependent thermal boundary conditions at its top and bottom layers. Each layer is of a specified thickness, and is comprised of a raw material, specified by its own data file of intrinsic (i.e. not context-dependent) physical properties. These include Bulk Properties: Density, Thermal Conductivity, Specific Heat, Latent Heats of Fusion, Evaporation, & Sublimation, Solar Absorptivity, Lambertian Emissivity, etc.; and Spectral BRDF surface parameters, such as directional-hemispherical reflectance (DHR), specularity, and width of the specular lobe, at each wavelength bin.

Each material file has 0.3-16.0 µm spectral DHR, 0-3.0 µm-integrated solar absorptivity and 3-16.0 µm long-wave emissivity, density, specific heat, thermal conductivity and Ulaby-Dobson polarized radar reflectivity parameters for radar. It also has fields for parameterized BRDF model measurements.

The advantage to the 1D Material System approach is that it enables instantiation of the same intrinsic properties to multiple locations on the terrain or cultural feature geometry, while still allowing context-dependent, angle-dependent irradiance loading, thermal calculation, and reflection to occur for each texel independently, by supplying the GPU shaders with the appropriate coefficients of these phenomena’s parameterized models.

For validation of predicted signatures and measurement of spectral material properties for use in research and in support of our signature-prediction products, JRM maintains a material measurement laboratory where these properties can be measured directly. In this laboratory, JRM employs a pair of state-of-the-art spectrometers covering the 0.35 to 16µm spectrum at high spectral resolution.  These devices have digital control and readout laptop computers, and can be mounted for field as well as laboratory use.

Our Material Library is in a format directly consumable by our SigSim spectral signature prediction library. In fact, SigSim and our material library are two key technologies in JRM's GenesisMC Semi-automated Material Classification Tool.

 

Material Library List

 

ConstructionAshRailway
ConstructionAsphalt
ConstructionAsphaltBlackWeathered
ConstructionAsphaltBlueGrey
ConstructionAsphaltLoose01
ConstructionAsphaltQuartz
ConstructionAsphaltWeathered
ConstructionAsphaltWeatheredGrey
ConstructionAsphaltWeatheredGreyClean
ConstructionBrassPlate01
ConstructionBrickExterior
ConstructionBrickRed
ConstructionBrickRed
ConstructionBrickRedRough
ConstructionBrickRedSmooth
ConstructionBrickRedSmooth
ConstructionBrickRedWeathered
ConstructionCardboard
ConstructionCinderblock
ConstructionConcrete
ConstructionConcreteAsphaltic
ConstructionConcreteGraniteWeathered
ConstructionConcreteLightBrown
ConstructionConcreteQuartz
ConstructionConcreteSoiled
ConstructionFoamBlack
ConstructionGlassPlateWindow
ConstructionGoldPlate01
ConstructionGraniteGravel
ConstructionGravelMarbleWhite
ConstructionGravelQuartzAggregate
ConstructionGravelQuartzLowGrade
ConstructionHempRope
ConstructionMarbleWeathered
ConstructionPineWood
ConstructionShaleGrey
ConstructionSlateGrey
ConstructionTarFresh
ConstructionVinylSidingAlmond
ConstructionVinylSidingGraniteGrey
ConstructionVinylSidingOxfordBlue
ConstructionVinylSidingSnow
ConstructionWoodPine
ConstructionWoodPineSanded
MetalAluminumWeathered
MetalSteelGalvanizedOxidized
MetalSteelGalvanizedWeathered01
MetalSteelGalvanizedWeathered02
PaintBlackFlat
PaintBlackFlatEnamel
PaintBlackFlatUltra
PaintBlackGloss
PaintBlackGlossAluminum
PaintBlackGlossEnamel
PaintBlackGlossLatex
PaintBlackGlossTwoCoatsAluminum
PaintBlackGlossTwoCoatsWood
PaintBlackGlossUrethane
PaintBlackGlossWood
PaintEbonyFlat
PaintGreenGlossAluminum
PaintGreenGlossTwoCoatsAluminum
PaintGreenGlossTwoCoatsWood
PaintGreenGlossWood
PaintSilverMetallic
RockAlpite
RockAndesiteBasaltic
RockAndesiteBrownGrey
RockAndesiteDarkGreyWhiteGreen
RockAnorthosite
RockBasalt01
RockBasaltAlkaliEarlyMiocene
RockBasaltCutSurface
RockBasaltDarkGrey
RockBasaltEarlyMiocene
RockBasaltGreenGrey
RockBasaltGrinderFrag
RockBasaltLightGrey
RockBasaltMiddleMiocene
RockBasaltPlagioclase
RockBasaltPlagioclaseGreenGrey
RockBasaltPlagioclaseGrey
RockBasaltSmooth01
RockDiabase
RockDiabasePlagioclase
RockDiorite
RockDolomiteBlueGrey01
RockDolomiteWhite
RockDunite
RockGabbro
RockGraniteAlkaic
RockGraniteGreyPink
RockGraniteGreyWhite
RockGranitePink
RockGranodioriteGrey
RockGranodioriteGreyGreen
RockIjolite
RockLamprophyre
RockLimestoneGrey
RockLimestoneGrey01
RockLimestoneGreyCalcite
RockLimestoneGreyLight01
RockLimestoneGreyVescularVuggy
RockLimestoneWhite01
RockMonzoite
RockNoriteCoarseGreenBlack
RockNoriteGreenBlack
RockObsidianRhyolitic
RockPhosphoriteAltered01
RockPhosphoriteUnaltered01
RockPhyliteGreyGreen
RockPicriteGreyDark
RockPicriteGreyLight
RockQuartzite
RockQuartzMonzonite
RockRhyolite
RockRhyoliteAltered01
RockRhyoliteAlteredGreen
RockRhyoliteAlteredLightTan
RockRhyoliteAlteredWhite03
RockRhyoliteArgillizedWhite
RockRhyoliteChalkyWhite
RockRhyoliteCholritic
RockRhyoliteCutAltered
RockRhyoliteFine
RockRhyoliteFineAlteredWhite
RockRhyoliteFinePhyllic
RockRhyoliteFineTan
RockRhyoliteFresh01
RockRhyoliteFreshBlueGrey
RockRhyoliteParagoniticAltered
RockRhyoliteParagoniticTan
RockRhyolitePhilicWhite
RockRhyolitePhylicallyAltered
RockRhyoliteRed
RockRhyoliteVolcanic
RockSandstoneVarnishedDesertFerruginuous
RockSandstoneWhiteKaolinitic
RockSchistBiotite
RockSchistChlorite
RockShaleGreyGreen
RockSiltstoneWhite
RockSyeniteAlkalic
RockSyeniteNepheline
RockTonaliteBonsall
RoofingClayTerraCotta
RoofingCopper
RoofingCopperWeathered01
RoofingCopperWeathered02
RoofingRubberBlackWeathered
RoofingRubberFiberglassWhiteWeathered
RoofingSlateGreyWeathered
RoofingTarPaper
RoofingTileAmber
RoofingTileAutumnBrown
RoofingTileBarkBrown
RoofingTileCharcoal
RoofingTileGrey
RoofingTileGreyWeathered
RoofingTileRedWeathered01
RoofingTileRedWeathered02
RoofingTileShastaWhite
RoofingTileSierraGrey
RoofingTileTarPaperNew
RoofingTileTarPaperWeathered
RoofingTileTerraCotta
RoofingTileWhite
SoilBrownSandyLoam
SoilClayBrownDark
SoilClayLoamBrownDark
SoilClayLoamBrownRedOrange
SoilClaySiltBrownLight
SoilClaySiltRed
SoilClaySiltYellowBrownDark
SoilClayYellowBrown
SoilDesertWashBasin
SoilFluvialDeposit
SoilGravelDustGrey
SoilGravelLoamBrownDark
SoilGravelLoamYellowLight
SoilLoamBlack
SoilLoamBrownYellowLight
SoilLoamDirtDark
SoilLoamGreyBrown
SoilLoamGreyBrownDark
SoilLoamGreyBrownVeryDark
SoilLoamMicaciousYellowBrownDark
SoilRedClayMica
SoilSandAlluvial
SoilSandBeach
SoilSandBrownDark
SoilSandBrownFine
SoilSandClayYellowBrown
SoilSandGraniteLoamBrown
SoilSandGravelBrownDarkFine
SoilSandGravelLoamBrown
SoilSandGreyBrownDarkCoarse
SoilSandGypsumWhite
SoilSandLoamBrown
SoilSandLoamBrownDark
SoilSandLoamBrownDarkFine
SoilSandLoamBrownFine
SoilSandLoamBrownFineAsh
SoilSandLoamGreyBrownDark
SoilSandLoamRedBrownDarkFine
SoilSandLoamRedBrownFine01
SoilSandLoamRedBrownFine02
SoilSandLoamRedOrange
SoilSandSandstoneRedOrange
SoilSandSiltClayRedOrange
SoilSandSiltLoamAlluviumRedOrange
SoilSandWhite
SoilSandyLoamBrownDark
SoilSiltClayGrey
SoilSiltClayGreyCalcareous
SoilSiltDirtTopsoil
SoilSiltGravelLoamBrownTan
SoilSiltGreyCalcareous
SoilSiltLoamBronwPale
SoilSiltLoamBrown
SoilSiltLoamBrown
SoilSiltLoamBrownDark
SoilSiltLoamBrownDark
SoilSiltLoamBrownGrey
SoilSiltLoamBrownGreyDark
SoilSiltLoamDark
SoilSiltLoamGreyBrownDark
SoilSiltLoamRedBrownDarkOrganic
SoilSiltLoamRedOrange
SoilSiltVirginiaRedClay
SolSandLoamAlluviumRedOrange
VegetationAtlanticWhiteCedarLeaf
VegetationBambooLeaf
VegetationBeechAmericanLeaf
VegetationBushLeaf
VegetationClover
VegetationCloverWeed
VegetationCrabgrass
VegetationCucumberTreeLeaf
VegetationDandelionLeaf
VegetationEasternRedCedarBerries
VegetationEasternRedCedarLeaf
VegetationFern
VegetationFirBalsamLeaf
VegetationGrass
VegetationGrassDry
VegetationGrassLake
VegetationGrassLakeTall
VegetationGreenbriarCommonLeaf
VegetationHickoryNutmegLeaf
VegetationHollyBerries
VegetationHollyLeaf
VegetationLambsEar
VegetationLichen
VegetationMapleLeaf
VegetationMaplePlanetreeAutumn
VegetationMaplePlanetreeLeaf
VegetationMapleRedAutumn
VegetationMapleRedLeaf
VegetationMapleSugarAutumn
VegetationMapleSugarLeaf
VegetationMossGreenDark
VegetationMossIrish
VegetationMountainAshLeaf
VegetationOakArkansasLeaf
VegetationOakPinLeaf
VegetationOakWhiteAutumn
VegetationOakWhiteLeaf
VegetationPalmLeaf
VegetationPecanLeaf
VegetationPeriwinkle
VegetationPineEasternWhiteLeaf
VegetationPineVirginiaLeaf
VegetationPlanetreeLondonLeaf
VegetationPoplarYellowAutumn
VegetationPoplarYellowLeaf
VegetationSweetBirchLeaf
VegetationSweetgumLeaf
VegetationTreeConiferousCanopy
VegetationTreeDeciduousCanopy
VegetationWeedPepper
VegetationWildflowerDaisy
VegetationWildStrawberryLeaf
VegetationWoodSorrel
WaterDistilled
WaterFoamSea
WaterFrost
WaterIce
WaterSea
WaterSnowFine
WaterSnowGranularCoarse
WaterSnowGranularMedium
WaterTap