Guest Editorial Introduction to the Special Issue on Large-Scale Video Analytics for Enhanced Security: Algorithms and Systems

Due to the rapid increase of the number of cameras used in the video surveillance and the huge needs of the smart city and public security, video surveillance by human beings is no longer suitable. Hence, since the end of the last century, video analytics for security or visual surveillance has become one of the hottest research topics. Wide-area video surveillance systems can have extremely high data rates and high data volumes. Therefore, the challenge of video analytics is to extract meaningful information efficiently from the huge flow of video data in order to produce high-level semantic descriptions of the activities occurring in the area under surveillance.