Moving object abnormal approach detection system and moving object abnormal approach detection method

摘要

There is provided a moving-body-abnormal-nearing detection system capable of determining whether abnormal nearing between moving bodies will occur in a short processing time. A projection matrix calculation means 71 calculates a first projection matrix indicating mapping from a 3D space onto a 2D plane based on period information of a first moving body and period information of a second moving body. An abnormal nearing determination means 72 maps the period information of the first moving body to a line segment in the 2D plane by use of the first projection matrix. It then determines whether abnormal nearing between the first moving body and the second moving body will occur by determining how a circle whose center is a passage position of the second moving body and whose radius takes a threshold as a determination standard as to whether abnormal nearing will occur crosses with the line segment.