伦敦50万个摄像头
人口近900万
该你了。。。
中国2016年就有 1.76亿摄像头了,现在还以惊人的速度发展。有报告显示,2022年将达27亿,虽然有点夸张,但远远超过世界上任何地区是没有疑问的了。Based on a small sample in Putney High Street, McCahill and Norris extrapolated the number of surveillance cameras in Greater London to be around 500,000 and the total number of cameras in the UK to be around 4,200,000. According to their estimate the UK has one camera for every 14 people.