脸部检测和追踪，脸部检测采用2013CVPR中DRMF算法，追踪采用KLT function [outfilename,fr] = DRMF_KLT(infilename)addpath(genpath('.'));infilename='lxn.avi'vidFile = fullfile(infilename);% first step 检测人脸% Create a casca