Thebackground-weightedhistogram(BWH)algorithmproposedin[2]attemptstoreducetheinterferenceofbackgroundintargetlocalizationinmeanshifttracking.However,inthispaperweprovethattheweightsassignedtopixelsinthetargetcandidateregionbyBWHareproportionaltothosewithoutbackgroundinformation,i.e.BW