“…As a core problem in computer vision community,moving targets tracking has got extensive and in-depth research.There are three main algorithms for human body tracking algorithm, Calman filtering , Meanshift algorithm, and template matching method,etc.Template matching method needs complex calculation and cannot extracte target absolutely [1] ,Meanshift algorithm has fast tracking speed , but it is easy to fall into local optimum [2] ,and Calman filtering needs the target state satisfied with Gauss distribution,otherwise it will needs a large amount of calculation,even worse failure to tracking when facing the non Gauss and nonlinear problem caused by complex background or target occlusion [3] .In recent years,particle filter algorithm developed rapidly in target tracking field,and has become a hot topic in the research of tracking target field for it's ability to deal with nonlinear, non Gauss problem [4,5] .…”