Survey of Big Data Application Technology on Multimedia Data of Public Security

The era of multimedia big data has a profound and extensive impact on the field of public security. The application of multimedia data and big data technology has brought new opportunities to the construction of public security system, as well as new challenges. This paper summarizes the new characteristics of various public security risk events, such as violent terrorist attacks, serious criminal offences, major group events, and network crimes, and analyzes the main problems existing in the application of big data technology in the field of public security. The progresses and trends of some essential technologies are analyzed.