Data preprocessing method and system for accurately restoring actual passing track of vehicle

The invention belongs to the technical field of intelligent traffic, and particularly relates to a data preprocessing method and system for accurately restoring an actual passing track of a vehicle, which are used for eliminating the influence of abnormal portal data on a vehicle highway path restoration result. The method provided by the invention comprises the following steps: S1, fusing and de-weighting; s2, reconstructing and sorting; s3, removing reverse marks and false marks; and S4, homogenizing the portal. According to the method provided by the invention, the portal transaction flow and the license plate recognition data are fused, the fused data are processed, the gantries subjected to reverse marking and error marking are eliminated, the abnormal gantries are eliminated, the portal data are subjected to portal homogenization processing, and the actual passing track of the vehicle is accurately restored to the maximum extent. The system provided by the invention can be independently developed, deplo