1.Logging in by the authentication of human face:(1)support capturing the human face through the camera and storing the pictures. (2)capture the human face through the camera and compare it with the pictures stored, if  matched, logging in successfully, or giving the errors. (3)support logging in by using user name and the password as supplement.  2.Recognize the human face in the video:	(1)provide the function of uploading the monitored face picture. (2)Upload the surveillance video, compare with the uploaded face picture. If it matches, give the time of the match time in the video and the corresponding print screen of the video.