Vehicle counting method based on movement track

Abstract

The invention discloses a vehicle counting method based on movement track, and relates to the field of traffic detection. The method of the invention comprises the following steps: stable feature points are selected and tracked; clustering is carried out according to the change of relationship between the same-time relative distances of the track of the stable feature points in a real space; and the count value of a vehicle counter is not updated when the variance of the same-time relative distances is smaller than a preset threshold, and 1 is added to the count value of the vehicle counter when the variance of the same-time relative distances is greater than the preset threshold. According to the invention, the vehicle track in a shot road video image is extracted and processed to obtain the relative distances of the track at the same time, and the number of vehicles in the video image is determined according to the change relationship between the same-time relative distances. Therefore, the influence of the environment in the vehicle counting process is avoided, the limitation that only vehicles of a single model can be counted is eliminated, and the precision and efficiency of vehicle counting are improved.

Description

technical field [0001] The invention relates to the field of traffic detection, in particular to a statistical method based on vehicle 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 road sur...

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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