Multi-target data association method, system and device based on infrared fisheye system

The invention provides a multi-target data association method, a multi-target data association system and a multi-target data association device based on an infrared fisheye system, and the multi-target data association method based on the infrared fisheye system is used for tracking a plurality of targets. The multi-target data association method comprises the following steps: S1, respectively acquiring measured values of each target at a first moment and a second moment; s2, according to the measured value in the step S1, calculating to obtain the direction difference of each target between the first moment and the second moment; and S3, fusing the distance and the direction difference of each target by adopting a Gaussian weighting method to obtain a covariance matrix of each target track. According to the multi-target data association method based on the infrared fisheye system, the distance and the direction of the tracking target are fused, so that the tracking precision of the tracking target is improv