wherein said abnormal behavior detector is characterized in that during {HEAD ~ the calculation} of said control parameters, {TAIL ~ these control parameters} are estimated so as to minimize the differences between said moving directions of said moving objects and the virtual moving directions determined by said behavior algorithm 
wherein said abnormal behavior detector is characterized in that during { HEAD ~ the calculation } of said control parameters , { TAIL ~ these control parameters } are estimated so as to minimize the differences between said moving directions of said moving objects and the virtual moving directions determined by said behavior algorithm
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