Can be identified in case of rain or dark
Tracing the moving person's face
A state-of-the-art closed circuit (CCTV) has been developed that can check the face of a person moving 60 meters away.
The Korea Institute of Standards and Science said on the 2nd that it has developed a CCTV that can track the face of a person moving at a distance of 60 meters, regardless of weather or time.
The institute has signed a contract to transfer the technology to video surveillance company Hansun Engineering. "We have solved this problem because existing CCTVs are difficult to identify at night, in bad weather, and at long distances," said Choi Man-yong, a senior researcher at the institute. "The surveillance area is 64 times larger than that of general high-resolution CCTVs, which can secure information on faces of multiple people at the same time."
As most of the existing CCTVs have low resolution and a maximum surveillance distance of 7.2 meters, it is difficult to accurately identify faces of people who are far away or filmed at night. As most CCTVs are fixed, they are required to check multiple CCTVs located in the path that they passed when the target is moved.
The institute has solved these problems by complementing visible cameras, thermal infrared and movement tracking cameras. Visible cameras recorded the scene in high definition, increasing the surveillance distance to 60 meters, while thermal infrared cameras detect temperature changes of people or objects and identify locations. According to the research team, the camera automatically adjusts rotation and zoom-in according to location information and follows the target. According to the research team, the camera can quickly change its posture to check the faces of about 30 people per minute, and tracks the path of movement until the front of the face is visible even when the target looks down or looks back.
Existing CCTV requires a separate data processing system for storage and transmission, but this CCTV stores and transmits data on its own. Shin Yong-hyun, director of the Korea Standards Institute, stressed, "It can replace several existing CCTVs and there is no cost to install optical cables, so considerable economic effects can be expected."
Reporter Lim So-hyung precare@hankookilbo.com
