A Vehicle Statistical Method Based on Driving Trajectory

Abstract

The invention discloses a statistical method based on vehicle tracks, which relates to the field of traffic detection. The invention includes the selection and tracking of stable feature points, clustering is performed by using the relationship changes between the relative distances of the stable feature points in the real space trajectory at the same moment, and when the variance of the relative distance at the same moment is less than the preset threshold, no update The count value of the vehicle counter, when the variance of the relative distance at the same time is greater than a preset threshold, the count value of the vehicle counter is increased by one. The present invention extracts the vehicle trajectory in the captured road video image, processes the vehicle trajectory therein, obtains the relative distance of the trajectory at the same time, and determines the number of vehicles in the video image according to the variation relationship of the relative distance at the same time, so that In the process of counting the number of vehicles, the influence of the environment and the limitation that only a single vehicle type can be counted are avoided, and the statistical precision and efficiency of the number of vehicles are improved.

Description

technical field [0001] The invention relates to the field of traffic detection, in particular to a vehicle statistics method based on driving tracks. Background technique [0002] With the rapid development of the economy, the number of cars is increasing rapidly. In order to reduce the traffic congestion caused by the increase in the number of cars, it is necessary to obtain the real-time number of cars on the road for timely traffic management. [0003] In the existing technology, the methods for vehicle statistics mainly include the ground induction coil method, wave frequency detection method, etc., wherein the ground induction coil method is that the driving vehicle passes through the road surface buried with coils, causing the change of the coil magnetic field, so that the detector Obtain the number of the vehicle; and the wave frequency detection method is to launch continuous low-power modulated electromagnetic waves into a certain area, leaving a projection on the r...

AI Technical Summary

Problems solved by technology

[0005] The coil using the ground induction coil method is buried underground, which is easily affected by freezing, subsidence of the roadbed, saline-alkali and other environments, which will affect the accuracy; although the accuracy of the wave frequency detection method will not be affected, but due to the frequency of the emitted electromagnetic wave Single, only one type of vehicle can be counted. Once there are multiple models, accurate statistics cannot be carried out, which reduces the statistical efficiency

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