Transcription of PARTICLE FILTER WITH MODE TRACKER(PF-MT) …
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PARTICLEFILTERWITHMODETRACKER(PF-MT)FORV ISUALTRACKINGACROSSILLUMINATIONCHANGEAmi tKale*,NamrataVaswani**andChristopherJay nes** Ctr. StateUniversity, Lighting,Tracking,MonteCarlomethodsABSTR ACTI nrecentwork,theauthorsintroduceda multiplicative, lowdimen-sionalmodelofilluminationthatis computedasa linearcombina-tionofa cientsdescribingilluminationchange,areca nbecom-binedwiththe shape vectortode nea joint`shape Inthispaper, weutilizetherecentlyproposedPF-MTalgorit hmtoestimatetheilluminationvector. Thisis moti-vatedbythefactthat,exceptincaseofoc clusions,multimodalityofthestateposterio ris usuallyduetomultimodalityinthe shape vector( ).Inotherwords,giventhe shape vectorattimet, theposterioroftheillumination(probabilit ydistributionofilluminationconditionedon the shape andilluminationatprevi-oustime)is ,it is cientstobesolvedinclosedformasa solutionofa , thisgoalis ,changesinposeoftheobjectorillumina-tion cancausea assumptionshold,shapechangeforrigidobjec tscanbecapturedbya low dimensional shape vector(here shape referstolocationandscalechange,ingeneral canalsobeaf ne).
PARTICLE FILTER WITH MODE TRACKER(PF-MT) FOR VISUAL TRACKING ACROSS ILLUMINATION CHANGE Amit Kale*, Namrata Vaswani** and Christopher Jaynes* * Ctr. for Visualization and Virtual Environments and Dept. of Computer Science
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