Poser5教程Chapter 15 The Face Room面部工作室原文教程.docx
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Poser5教程Chapter 15 The Face Room面部工作室原文教程.docx
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Poser5教程Chapter15TheFaceRoom面部工作室原文教程
Chapter15:
TheFaceRoom
byDeniseTyler
TheFaceroomallowsyoutocreatecustomfacesandtexturesforyourPoserfiguresinseveraldifferentways.WhenyoufirstopentheFaceroom,itappearsasshowninFigure1.
Figure15.1:
ThevariousareasandcontrolsintheFaceroom.
TheareascontainedintheFaceroomallowyoutoperformthe
followingtasks:
•PhotoLineup:
Allowsyoutoimportfrontandsidephotosofaperson,andusethephotostogenerateafaceshape
andtexture.Thisareaalsocontainsseveraltoolsthatassistinaligningtheheadgeometrytothephotosthatyouuse.TheApplyShapebuttongeneratesheadgeometrythatmatchesyourphotos.
•TextureVariation:
ClicktheTextureVariationstabtodisplayoptionsthatallowyoutomodifytheappearance
ofyourtexture.Youcanaddfacialcoloringforbeards,eyesockets,andeyebrows,andalsomodifythetexturetoaddethnicity,age,andgenderdifferences.
•FaceSculptingWindow:
Displaysatexturedpreviewofyour3Dhead.Cameracontrolsarelocatedabovethetoprightcorner,allowingyoutorotate,pan,andzoominorout.You
canalsopushorpullselectedverticestoreshapethehead.
•ActionButtons:
Containsbuttonsthatapplytheheadshapeandortexturetoyourcurrentcharacterinseveraldifferentways,withorwithoutthegeneratedtexture.
•FaceShapingTool:
Containsparameterdialsthatallowyoutoshapetheheadandfacialfeaturesfurther.ThedialsaresimilartothoseintheParameterspaletteofthePoseroom.
•CaricatureDial:
Addscharactertoyourfacebyenhancingthefeatures.Negativevaluesde-exaggerateheadandfacial
features,whilepositivevaluesover-exaggeratethem.
•ResetFaceRoomButton:
RestoresthedefaultheadshapeandtexturemapandundoesallpreviousFaceroomwork.
•TexturePreviewWindow:
Showsapreviewofyourtexturewhileyouareworkingonaphoto-generatedface,andallowsyoutoloadorsavefacetexturemaps.
•RandomFaceButton:
RandomizestheFaceShapingToolmorphsettingstogenerateanewfaceasastartingpoint.Usethisfeaturewithcaution,asiterasesanyworkthatyouhavepreviouslycompleted.
Inthistutorialsection,you’lllearnabouteachoftheseFaceroomareas,andwillstepthroughareal-worldprojectthatwillcreateafemalecharacterandhead.Thetopicsyou’lllearnareasfollows:
•GettingReadyforYourFaceRoomProject
•ChoosingandPreparingPhotos
•Task1:
ImportthePhotostotheFaceRoom
•Task2:
AdjustSize,Position,andRotation
•Task3:
AdjustFeaturePoints
•Task4:
RefinetheHeadShape
•Task5:
ApplytoYourFigure
GettingReadyforYourFace
RoomProject
Thoughtheirheadsareshapedandsizedabitdifferently,Don,Judy,Will,andPennyhaveonethingincommon.Theyallsharethesameheadgeometry.Asaresult,theFaceroommorphsworkonallofthem.Ithastodowiththefacegeometry.
InorderforanyfiguretoworkintheFaceroom,itmustusethesameheadgeometrythatDon,Judy,WillandPennyuse-otherwise,themorphswillbeincompatible.SeeingasthemainreasonfortheFaceroomistocreatecustomizedcharacters,themorphsarevitaltothisprocess.Unfortunately,thismeansthattherearemanyotherPoserfiguresthatwillnotbecompatiblewiththeFaceroom,becausetheirheadgeometryisentirelydifferent.
So,gotothePoseroomandloadDon,Judy,Will,orPennyontothestage.Whenyoudothisisnotreallyimportant,butyou’lldefinitelywanttomakesureyouhavetherightcharactertherebeforeyouapplyyourcustomheadtothefigure.Forthepurposeofthistutorial,addJudyinthePoseroomasshowninFigure2.Ifyou’recreatingamaletextureinstead,chooseDon.
texturetoDon,Judy,Will,orPenny.ThengototheFaceroom,andclickthe“ImportOriginalFigureHeadTexture”button
intheActionsarea.TheheadtexturefromthefigureinthePoseroomwillbeappliedtotheheadintheFaceSculptingarea.
ChoosingandPreparingPhotos
Figure15.2:
LoadtheproperfigureintothePoseRoom,sothatitisreadyfor
youtoapplyyourcustomhead.
ThoughyoucancreateheadsandtexturesforWillandPenny,thegeometryadjustmentsandmorphsthatyoucreateintheFaceroommaycausetheheadstobelarger.
Ifyoudon’twanttousetheFaceroomtocreatea
headtexture,youcanuseathird-partytexturetodevelopyourcharacter.First,usetheMaterialroomtoapplyyourfavorite
TheFaceroomallowsyoutoimportphotosinthefollowingfileformats:
BMP(Windowsbitmap);GIF(CompuserveGIFformat);JPG(JPGFiles);PCX(ZSoftPaintbrushformat);PNG(PortableNetworkGraphicsformat)andTIF(TIFFFiles)
ThoughPoserdoesallowyoutoworkwithmismatchedphotos,orphotosthatarenotperfectlyaligned,yougetthebestresultsifyoufollowcertainguidelines.
IthelpsmattersifyoukeepthefollowingpointsinmindwhenyoushootphotosfortheFaceroom.Thecloseryourphotosaretotheseguidelines,thebetteryourresultswillbe.
•Positionthecamerasothatitislevelwiththesubject’sface.
Itshouldalsobecloseenoughtocapturetheentirefacewiththemaximumamountofdetail.Takethefrontandsidephotosatthesamedistance.
•Ifyourcamerahasawhitebalancefeature,haveyoursubjectholdapieceofwhitepaperinfrontofhisorherface,andadjustthewhitebalancingaccordinglybeforeyoushootthephotos(orforeachviewifyouadjustthelightingbetweenshoots).Thisisessentialtoachievephotosthatarenaturalincolor.
•Lightingshouldbeallwhite.Coloredorunnaturallightingcolorsaffectcolorfidelity.Adjustthelightingsothatyouachievethemaximumamountofdetailwithoutwashingoutthesubject.Lightingthatistoodarkwillnotshowenoughdetail,whilelightingthatistoobrightwillwashoutthesubject.
•Thesubjectshouldremoveglassesorotheradornmentsthatareunwantedinthefinaltexture.
•Thesubjectshouldhaveaneutralfacialexpression,withclosedmouth.
•Earsshouldbeclearlyvisible.Comborpullbackthehairtoshowasmuchoftheearaspossible.
•Forthefrontphoto,thesubjectshoulddirectlyfacethecamerawithouttiltingtheheadupwardordownward.
•Forthesideview,thesubjectshouldface90degreesawayfromthecamera,preferablyfacingtowardtheright.(Posercanflipphotosthatfacetowardtheleft).
ImportantNotesaboutPhotoSize
Bydefault,Posercreatesa512by512-pixeltexture.Youcan,however,createafacetexturethatisofhigherresolution.However,inordertodoso,thereisaslightcatchinregardstothesizeoftheoriginalphotos:
thedimensionsofthesourcefilesmustbeapowerof2.
Whatthismeanstoyouisthatifyouwanttocreateaheadtexturethatisabout1500x1500pixels,youcan’tuseaphotothatis
thatsize.Thenext-highestpowerof2is2048x2048.Yoursourcephotosshouldbe2048x2048toresultinafacetexturethatis
2048x2048.Youwouldthenneedtoresizeyourtextureinaphotoeditortogetthedesiredsizeof1500x1500.
512x512
1024x1024
2048x2048
4096x4096
Forquickreference,thefollowingtableshowsdimensionsthatarepowersoftwo:
Ifyourphotosdonotcomenearthesizeslistedabove,youcanuseaphotoeditortoaddpixelsaroundtheouteredgesofthephotountilyouarriveattherecommendeddimensions.
ImprovingPhotoswithanImage
Editor
Ifyourphotosarenotquiteperfect,youcanuseanimageeditingprogramtohelpthesituation.Herearesometipsforyou.
•Adjustcolor,hue,saturation,orcontrastuntilyourphotoslooktheirbestandmaintainconsistencyincolorandbrightness.
Trytomakeyourfrontandsidephotoslookuniforminthisregard.
•Sizethefrontandsidephotosuniformly,sothattheeyes,nose,mouth,andchinmatchuptoeachother.Whatcanhelpinthisprocessistoopenoneofthephotosinanimageeditorthatsupportslayering(suchasPhotoshop,Painter,orPaintShopPro).Copythelargerphototoalayerabovethefirstphotoandreducethetransparencysothatyoucanseethesmallerimagebeneathit.Then,rescalethelargerphotoso
thattheeyes,nose,mouthcorners,andchinsareonthesamehorizontalplaneasshowninthenextfigure.Guidescanalsohelpinthisprocess.AnexampleofthisprocessisshowninFigure3.
PhotosusedinthistutorialappearwiththepermissionofPeterLevius,hostofhttp:
//www.3d.sk.Thissitemakesthousandsofhighqualityphotosavailabletotextureartistsforaveryreasonablefee.Checkitout!
Figure15.3:
UseanimageeditorsuchasPhotoshoptoalignandstraightenthefrontandsidephotos.
•Fixphotoimperfections.Ifyouhavemultipleshots,youcan
usepartsofonephototohelpfiximperfectionsinanother.Forexample,let’ssayyouhaveaperfectstraight-onshotthatisfacingdirectlytowardthecamera.ThephotoshowninFigure
4isperfectforastraight-onview,withonesmallexception:
thesubject’smouthisslightlyopen.Toremedythisproblem,locateanotherphotothathasaperfectmouth.Createafeatheredselectionaroundthegoodmouthandpasteitintoalayerabovetheless-than-perfectone.Adjustthebrightness
andtoneuntilittheymatchperfectly.Ifdoneproperly,you’llhardlyknowthedifference,asshowninFigure5.
Figure15.4:
Useportionsofotherphotostofiximperfectionsinashotthatisalmostperfect.Here,adifferentmouthisselectedtocovertheopenedmouthinthephoto.
Figure15.5:
Afterminoradjustmentsinbrightnessandsizing,thenewversionof
thephotohasaclosedmouththatismoresuitablefortexturingintheFace
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