现代社会是一个人口密集、高度复杂的社会,面临的突发事件和异常事件越来越多,其监控的难度与重要性也越来越突出。为此,世界各国政府和学者已开始密切关注新一代的监控技术—— Modern society is a densely populated and highly complex society. With more and more emergencies and anomalies, the difficulty and importance of monitoring are becoming more and more prominent. To this end, governments and scholars all over the world have begun to pay close attention to a new generation of surveillance technology -