Improved Hardware-Accelerated Visual Hull Rendering

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1、ImprovedHardware-AcceleratedVisualHullRenderingMingLi,MarcusMagnorandHans-PeterSeidelMax-Planck-InstitutfürInformatikStuhlsatzenhausweg85,D-66123,Saarbrücken,Germanyming,magnor,hpseidel@mpi-sb.mpg.deAbstractreal-time.Thehardware-acceleratedalgorithm[8]issu

2、chanexample.However,intheoriginalren-Thevisualhullisanefficientshapeapproximationderingalgorithm,thenumberofinputsilhouetteim-forthepurposeofreconstructingandvisualizingagesislimitedtothenumberoftextureunitsavail-dynamicobjects.Recently,rapidprogressingraph

3、-ableongraphicshardware.Thequalityofrender-icshardwaredevelopmenthasmadeitpossibletoingisalsorestrictedbyhardwareresourcesandpro-rendervisualhullsfromasetofsilhouetteimagesgrammability.inreal-time.InthispaperwepresentseveralnewalgorithmsInthispaperwepresen

4、tseveralnewalgorithmstoimprovethegeneralityandqualityofhardware-toimprovethegeneralityandqualityofhardware-acceleratedvisualhullrendering.First,amulti-acceleratedvisualhullrendering.First,amulti-passapproachemploystextureobjectsandthesten-passapproachemplo

5、ystextureobjectsandthesten-cilbuffertoallowusingarbitrarynumberofsil-cilbuffertoenablethevisualhullrenderingalgo-houetteimagesasinputforrendering.Secondly,rithmtodealwitharbitrarynumbersofinputim-flexibleprogrammabilityofstate-of-the-artgraph-ages.Secondly,

6、flexibleprogrammabilityofstate-icshardwareisexploitedtoachievesmoothtran-of-the-artgraphicshardwareisexploitedtoachievesitionsbetweentexturesfromdifferentreferencesmoothtransitionsbetweentexturesfromdifferentviewsprojectedontovisualhulls.Inaddition,therefer

7、enceviewsprojectedontovisualhulls.Inad-“projecting-through”artifactsinprojectivetexturedition,visibilityproblemswithprojectivetexturemappingareremovedbycombiningtheshadowmappingaresolvedbyusingtheshadowmappingmappingtechnique.Allourrenderingalgorithmstechn

8、ique.Wetestourrenderingalgorithmsonvar-runatreal-timeframeratesonavarietyofcom-iousoff-the-shelfgraphicscardsandachievereal-moditygraphicshardware.timeframerates.Therestofthepaperisorganizedasfollows.Af-terar