搜索
SummaryofPrimatteinterfacePrimatteKeyerisknownforitseaseofuse,speedandgreatkeyingresults.Primatteworksequallywellwithanycolorbackingscreen,althoughgreenorbluearethetraditionalcolors.Itsuniquealgorithmletsyoupullthemostdifficultmattes,evenfromapersonwearingabluedenimshirtandbluejeansinfrontofabrightbluescreen.ThePrimatte5.1interfaceisbrokenintologicalgroupsforkeyingcontrols,selectioncontrols,spillcorrection,detailtouchup,colorcorrectionandadvancedcompositing.GohereforinterfacechangesfromPrimatte4.0.KeyinggroupInKeyinggroupiswhereallofthekeyingfunctionsarelocatedandincludesmanyoptionsforautomation.LearnmoreKeyingViewgroupTheViewgroupdesignateswhatViewmodeyouseeintheCompWindow,andletsyousplittheviewtoseeyourkeyedfootageinvariousstatessimultaneously.LearnmoreKeyingSelectiongroupOutsideoftheAutoComputebutton,theSelectiongroupistheheartofPrimatteKeyer.ItcontainstheprimarytoolsthatyouwillusetoperformPrimatte’skeying.LearnmoreKeyingCorrectiongroupOnceyouhavegeneratedyourmatte,theCorrectiongroupwilltweakittoagreatcomposite.ThesetoolsperformtheFineTunefunctionswithagreaterdegreeofautomation.LearnmoreKeyingRefinementgroupTheRefinementgroupletsyoureduceorrecovertheamountofspillcolor,mattedensityandlevelofpreserveddetail.LearnmoreDeartifcatinggroupTheDeartifactinggroupremovesanyblockingaroundtheedgesoftheimagecausedbycompressionalgorithmsinthesourceformat.LearnmoreAlphaControlsgroupTheAlphaControlgroupletsyoumakeadjustmentstothemattetoachieveasuperiorcomposite.LearnmoreCompositeControlsgroupTheCompositeControlsgroupincorporatessomeofthecolorcorrectionandadvancedcompositingfeaturesfoundinRedGiant’sKeyCorrectplug-inset.LearnmoreDeartifactinggroupTheDeartifactinggroupremovesanyblockingaroundtheedgesoftheimagecausedbycompressionalgorithmsinthesourceformat.DeartifcatingisdesignedtoassistyouwhenperformingakeyonsourcefootagefromDVorHDcameras.Fromaworkflowstandpoint,Deartifactingisapre-process.IntheinternalPrimatteworkflow,thesealgorithmsareappliedtotheimagebeforeitiskeyed.However,ifyoupullakeyandsubsequentlynoticethattherearejaggededgesonyourobjects,youcangobackafterwardandapplytheDeartifactingcontrols,oratanyotherpointinthekeyingprocess.OverviewofdeartifcatingInthefilmworld,footageisshotonfilmandscannedintouncompressedRGBimagesequencesat8-bitorgreatercolordepth.Withfootageshotonvideo,however,theoutputisusuallycompressed,andsavedinreduced4:2:2or4:1:1YUVcolorspace.Thiscompressionandreducedcolordepthcanoftencauseproblemswhenkeyingobjectswithsoftedges,suchashairorsmoke,oronobjectswithagreatdealofmotionblur.Primatte’sDeartifactingcontrolsallowyoutogetasuperiorkeybypre-processingtheimagewithalgorithmsspecificallydesignedtoaddressthisissue.Atleft,anactressinfrontofabluescreenthatwasshotonHDV.Atright,thefootagewithaninitialsample.YoucanseeblockingandartifactingcausedbythecompressionintheDVsource.Atleft,akeywithoutDeartifacting.Atright,akeywithDeartifactingenabled.Modepop-upTheModepop-uptellsPrimattewhatkindofcamerathefootagewasshotwith.ThishelpsPrimatteanalyzethefootageandmakeitsbestguessastohowtosmooththeedges.TherearefourModeoptions:•None:Analyzestheedgesofthemattewithoutadjustingforanyspecifictypeoffootagecompression.•DV/HDV:ChooseDV/HDVforanyfootageshotonaDVcamera.•HDCAM:ChooseHDCAMforHDvideo.•Other:Choosewhenyouhavefootagethatcomesfromavideoformatnotpreviouslymentioned,oronanyfootagethathasthesetypesofblockingissues,nomatterwhatitssource.StrengthDetermineshowmuchdeartifactingcorrectionisappliedtotheimage.Ahighervalueappliesmoreedgecorrection.KeyinggroupAsitsnamesuggests,theKeyinggroupiswhereallofthekeyingfunctionsarelocated.TheresiaprimarysectionofKeyingoptions,alongwithfoursubgroupsofKeyingparameters.Primatte5.1hasthreeautomatictoolsthatgiveyoumorechoices.AutoComputeisnowaneasy-to-accessbuttonwithanimprovedalgorithmandspot-ondefaultsettings.AdjustLightisbrandnewtoolthatevensoutbackgroundcolorsforaccuratebackgroundremoval.Anothernewfeature,SmartSample,generatesgreatresultsusingsmartforegroundsamplingandahistogrampass.ThepowerofPrimattenowcomesinfewerclicks.AutoComputebuttonRunsasmartalgorithmthatfiguresoutandeliminatesthebackgroundcolor.Whenyouclickthisbutton,Primatteautomaticallyanalyzestheoriginalimage,determinesthebackgroundscreencolor(typicallyblueorgreen),andsetsitasthecentralcolor.AutoComputeusesthatinformationtoautomaticallyeliminatethebackgroundcolorandcleanupanynoiseintheforegroundobjectandthebackscreenarea.IftheSmartSamplecheckboxisturnedon,thenAutoComputedoesthisprocessusingthenewPrimatte5.1foregrounddetectionalgorithm.Ideally,ifyouareusingAutoCompute,youshouldonlyhavetodosomespillremovalafterward.IfyouaremakinguseofthenewAdjustLightfeature,youwillalsohavetoapplythatseparately.However,therearemanythingsinaforegroundclipthatcaninterferewithgettingagoodresult.Iftheinitialresultisnotanalmost-cleankey,thenyoushouldclicktheResetbuttonandstartPrimatteoverusingthestandardfour-stepoperation(SelectBG,CleanBG,CleanFGandSpill).AdjustLightOn/OffcheckboxArtificiallyadjuststhelightinginyourfootagetogiveyouabetterkeybyeliminatin