It is the main duty of the investigation team to analyze and infer the whereabouts of criminals by observing the surveillance probe videos all over the streets and lanes, and to provide clues for case detection. Graphic investigation is not just monitoring, it is an all-encompassing account, and images only provide clues. Combining these clues with other investigation techniques is the key to solving the case.
"Picture detection" is a professional expression in police videos, not "picture detection" in the production of picture PS. Image detection is image detection, that is, the police can find the suspect by detecting video images. The usual process is that the police can find suspects through technical judgment, call video surveillance that may contain suspects, and read surveillance videos one by one. In the past, the common investigation techniques of public security system included criminal investigation (criminal investigation), technical investigation (technical investigation) and network investigation (network investigation).
With the development of economy, the country is vigorously building a safe city, and more and more image recording equipment is more and more advanced, which is a necessary condition for the rise of map detection technology. Take Putian City, Fujian Province as an example. In the past two years, the municipal public security organs have cracked more than 4,500 cases, including more than 20 murders.