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IEEE/ICACT20220317 Slide.04        [Big Slide]       [YouTube]	Oral Presentation
	In today's modern social life, using CCTV cameras to support the local government to monitor urban security has become popular in most countries. We can see CCTV cameras appearing everywhere on the streets, public areas, bus stations, etc. The formation and development of CCTV cameras started in the 1950s of the last century. At that time, with the limited technology and expensive cost of CCTV systems, only a few large cities in rich countries could afford to install CCTV surveillance systems. For more detail of slide 4 content, please watch the recorded clip on youtube at https://www.youtube.com/watch?v=oY1q12rwbfc

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