Above are the three iamges that are taken in a scene with surveillance camera. During this activity, I have realized how many surveillance cameras are actually surrounded in those areas that in my daily life. there is no doubt that surveilliance cameras can be an useful tool to monitor any potential suspect behavours or activitys in some public areas. But there would comes to a moment that it might feels a bit lack of privacy when the surveillance camera are covered widely throughout the society. For example, China has built a comprehensive urban surveillance network, not only to maintain law and order, but also to monitor and suppress dissidents and human rights activists, which is one of the concerns that we might question about the surveillance cameras system.