@techreport{weko_52112_1,
   author	 = "Jonathan,Sahagun and Takahiro,OKABE and Yoichi,SATO",
   title	 = "Tracking People in Crowds by Feature Point Cluster Analysis Based on Spatial and Frequency Domain Cues",
   year 	 = "2007",
   institution	 = "The University of Tokyo, The University of Tokyo, The University of Tokyo",
   number	 = "1(2007-CVIM-157)",
   month	 = "jan"
}