These days security has become a major issue due toexponential increase in the crime rates. This lead in the adaptation of surveillance systems in various public areas like shopping centers, bus and railway stations, schools, airports etc. These systems capture daily motion of people, but keeping an eye on the ongoing in every area is difficult. Hence, there is a necessity of smart surveillance system which will detect any mishap or anomalous activities in the ongoing videos. This paper surveys the various methods proposed in earlier researches for the detection of anomalous activities in videos and concludes with the most efficient or effective system.

Keywords : Anomalous Activity Detection, Surveillance System, Survey.