Vehicle trajectory prediction method and system based on video vehicle passing data

Abstract

The invention discloses a vehicle trajectory prediction method and system based on video vehicle passing data. The method comprises the following steps: collecting vehicle passing data, and extractingeffective field information in the vehicle passing data; constructing a basic road network; sorting the vehicle passing data according to the sampling time to form a total travel chain of each vehicle in the sampling time period; extracting two adjacent sample sequences in turn, calculating the travel time of the vehicle passing through two adjacent intersections according to the sample sequences, judging that the two adjacent intersections are travel chain segmentation points, and segmenting the total travel chain into a series of sub-travel chains according to the travel chain segmentationpoints; calculating the steering state probability of each vehicle at each intersection according to the sub-travel chain to obtain a steering probability matrix; determining that the intersection corresponding to the maximum steering probability in the steering probability matrix is the intersection to be reached by the vehicle driving trajectory prediction. The invention avoids the shortcomingsof relying on continuous positioning data, so as to realize the travel behavior characteristic analysis of any vehicle.

Description

technical field [0001] The invention relates to the technical field of road traffic state detection and management, in particular to a vehicle track prediction method and system based on video passing data. Background technique [0002] Vehicle trajectories contain a large amount of individual vehicle travel behavior information and macroscopic traffic flow information, and trajectory prediction is of great value to traffic management. On the one hand, vehicle trajectory prediction can assist in the judgment of macro-traffic flow operation situation, which is of reference significance for traffic congestion estimation, traffic congestion mitigation strategy formulation, driving route optimization, etc., and improves the efficiency of urban traffic operation. On the other hand, vehicle trajectory prediction can provide a basis for the traffic control department to inspect and control illegal vehicles (such as stolen vehicles, fake license plate vehicles, overdue vehicles, veh...

AI Technical Summary

Problems solved by technology

This manual analysis method relies on the experience of traffic police officers, and consumes a lot of human resources, which is inefficient

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