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AhumanfacecanbemodeledusingPhotoModelerScanner(PMScanner)usingoneormorepairsofstereophotos.Sometimesitispossiblewithasinglecamera,butduetothesubtlemovementofahumanface(despitealleffortsofyourmodeltokeepstill!),youwillusuallygetabetterresultwithtwoormoresynchronizedcameras.

Thefollowingsequenceofstepsisbasedontheassumptionthatyouknowthebasicsofmarkingandreferencingpoints(targetandnon-targetpoints),thatyouarefamiliarwiththebasicstepsofcreatingDSM’swithPMScanner,andthatyouhaveawellcalibratedcamera.

FormorebasicinstructionsthePMScannertutorialprojectsandvideosareagoodplacetostart.

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SceneSetupandPhotography

1.Placeaseriesoftargetsonawallorarigsothattargetssurroundtheface.Ensureasmanyofthetargetsarevisibleinasmanyofthephotosaspossible.Codedtargetsmakeorientationandsetupphaseveryefficient.

2.Haveyourfacemodelsittingcomfortablyandstill.Ifusingjustonecamera,themodelwillneedtobeextremelystillduringphotography.

Thefollowingshowsatypicalsetup(onephotoofa4-synchronizedcamerassetup):

3.Ifusingsynchronizedcameras,setupyourcamerasontripodsandtestyoursynchronization(usingaremotecontrolorotherremotetriggeringsystem).

Arrangeyourcamerasinaconfigurationsimilartothis(ifnotusingsynchronizedcameras,moveyourcameratothesepositionsasquicklyaspossiblebeforeyourmodelmoves!)andtakethephotos:

Theanglesbetweenthesepositionswillbesmallandclosetoparallel.Thereshouldnotbeanymorethanafewdegreesoftoe-inangle.

Usually4photoswillbeenoughtomodelthefaceandpartsofthesidesofthehead.Ifyouwanttomodelthefront,sides,andback,you’llneedtomakesureyourphotopairscovertheentireareaofinterest,andyou’llneedtomakesurethatyouhaveenoughtargetsinviewtoadequatelyorientyourphotos.

Youmaywanttoincludeanotherphotofromthesideoraboveatagreaterangletoassistincameraorientation.Thecamerainredabovesugge