Neoscape夜景效果图制作教程.docx
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Neoscape夜景效果图制作教程.docx
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Neoscape夜景效果图制作教程
这是Neoscape公司2008年的教程觉得还是有帮助,转过来学习一下
ExteriorScene-NightLighting
Software:
3dsmax
Author:
NeoscapeArtist:
HaoLa
AuthorWebsite:
Lightingisoneofthemostimportantpartsin3Dvisualizationrendering.Itbringsnotonlythelookandfeelfortheimage,butalsohelpstovisualizethedesigninreality.Unlikeinteriorlightingwhereyouhavetospendmoretimetomakesureeverydetailintheroomislitperfectly,exteriorlightingiseasiertosetupbutstillchallengestheartist.
1.Modeling
Herewehavetwoblocksofbuildings.Thiswillbeaverybusysceneintheeveningwhenthereareagreatnumberofhighlightsandshadows.Everyelementintheentiremodelisorganizedintolayers.
2.CameraViewSetup
Wesetupaperfectviewforthescene.Atthispoint,theoveralllightingissketchedout.Itisalateafternoon/duskkindoflightingwhenthereisstilllightfromtheskyandaslightlywarmcolorfromthesun.Thesceneisalsolitbyalotoflightcomingfromtheretailstores,restaurantsandcarsonthestreet.
3.Texturing
Allthematerialsareappliedtothemodel.Thereisnotweakinginthematerialsatthispointyetuntilthelightingisdone.
AllthematerialsinthesceneareoptimizedbyusingVraymaterials.
Thematerialshavealotofreflectionandhighlights.Thepointhereistocreatemorehighlightfortheimagesatnighttime.Thisisoneoftheeffectivewaystogivetheimageextrarealism.
Besidesthat,someofthematerialsinthescenehaveVrayDisplacementModsuchasthebricksidewalkandgrass.
5.Lighting
Startingwithenvironmentlightfirst,itisagoodpracticetospendsometimelookingforreferenceimagesorphotosofthelighting.Weexperiencethecoloroftheskywhenitisatlateafternoonandfindagoodhigh-resoftheskyatthatmoment.Alotofpurpleintheshadow,coolercolorfromtheskyandwarmcolorforthestreetlights;thesearethethingsweneedtoaimforinthefinalimage.
IntheEnvironmenttabinVraysettingdialogue,askybitmapisappliedintoGIandReflection/refractionslotandleavethevalueat1.0.
Afterthat,wecangoaheadandtestrender.Atthisstage,weuseaverylowsettingforthetestrenderinginordertogetaquickpreviewoftheimage.
_Colormapping:
Exponential
_IrradiancemapandLightcachefor1stand2ndbounce
_IrradiancemapwassettoVerylow
_LightcachewithSubdivsat200andsamplesizeat0.02
Pressrender…
Itlooksverydarkatthispoint,butthelightingisstartingtoshowtheeffectofthesky.
Tomaketheimagelookmuchbrighter,simplyincreasethevalueofGIenvironmentfrom1.0tosomethinglike7.0,andalsochangethevalueofExponentialcolormappingsome.
WealsoaddasingleTargetDirectLightwithabluecolortosimulatethelightfromthesky.
Dothetestagaintoseehowitchanges.
Thislooksmuchbrighteraswewanted.Theshadowisfilledwithpurplecolorandthereislightcomingfromthesky.Therender’squalitylooksreallybadbecauseofthelowsetting.Thiswillnotaffectthefinalimagesincewewillchangetoahighersettinglateron.
Thatshouldtakecarefortheenvironmentlight.Weaddsomemoredetailsintothescenesuchasstreetlampsandinteriorlights.
_Omnilightisusedtocreatelightingforthosestreetlamps.
_VrayLightisusedintheinterior.
Andhere’saquickrenderrightafter.
It’sgettingthere.Atthisstage,wefocusmoreondetailsofthescene.Inaddition,somelandscapes,furniture,carsonthestreetandretailstoresareadded.
Now,wearereadyforthefinalrender.
4.RenderSettingForFinalImage
Forafinalrenderimageat4000pixel,wechangethesettingsothatitishigherthanbeforetobringmorequalitytotheimage.
Forpostwork,wealsorenderedouttheVrayRawReflection/Refractionpass,VraySpecular(youcanaddthesepassesbygoingtoRenderElementsandclickontheAddbutton).
5.PostWork
WeusePhotoshopforpostwork.LeveladjustmentsandColorBalanceareusedtoimprovethecontrastandcorrectthecolorfortheimage.
Askybackdrop,landscapesandpeoplearealsoaddedintothescene.
ReflectionandSpecularpassesareusedtoaddmorereflectionandhighlightfortheimagetoprovidemorerealisticeffects.
WealsorenderoutaVrayDirtpasspasssowecanuseitinPhotoshoptoboosttheshadow.
Someclose-updetails:
Andthereitis.Thelightingfortheimageiscompleted.Wegotthelookandfeelaswantedwithalotoflightingandhighlightsbouncingaroundthescene.
Ihopethistutorialwillprovideyouasimple,yeteffectivewaytodealwithanightlightingimage.
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- Neoscape 夜景 效果图 制作 教程
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