Vehicle type accurate classification system and method based on real-time double-line video stream

Abstract

The invention discloses a vehicle type accurate classification system and method based on real-time double-line video stream. The system comprises a vehicle body scanning camera, a high-definition capturing camera and a video vehicle detector. The method comprises the steps that the vehicle body scanning camera and the high-definition capturing camera carry out double-line video collecting on vehicles; after vision field calibration, one-to-one-corresponding logic relation of virtual pixel spaces and real physical spaces is established; the vehicles in a vision field are subjected to target separating; and accurate vehicle physical data are given, model rebuilding and three-dimensional measuring are carried out, and vehicle types are finally judged. The system and method have the advantages that two-line high-definition video stream of the vehicle body scanning camera and the high-definition capturing camera, the embedded double-channel video vehicle type detector and a three-dimensional vision vehicle body model rebuilding and fitting mode are used, various parameters of the vehicles can be provided at the same time, and the vehicles are accurately classified.

Description

technical field [0001] The invention relates to a system and method for classifying vehicle types, in particular to a system and method for accurately classifying vehicle types based on real-time two-way video streams, and belongs to the technical field of road traffic. Background technique [0002] With the rapid development of social economy and the acceleration of urbanization, the scale of road traffic in my country has expanded rapidly, and a series of traffic management problems arising from this need to be solved urgently. Based on different traffic management requirements, it is an effective technical means to carry out accurate classification and management of vehicles with a unified caliber. [0003] Table 1 "JT-T489-2003 Toll Road Vehicle Toll Vehicle Type Classification Standard" [0004] [0005] Accurate classification of vehicle types uses multi-dimensional sensor technology, based on the transportation industry standard specification "JT-T489-2003 Toll Ro...

AI Technical Summary

Problems solved by technology

In addition, annular ground sense coil detectors, infrared grating detectors, etc. can also provide simple vehicle classification functions alone, but they cannot be used alone as precise classification equipment

[0011] The essence of this method is a multi-detector data integration application technology. Although it can fully provide the precise vehicle classification parameters required in the "Standard", as an outdoor application system, its front-end structure is too complicated and redundant. Therefore, the system High construction costs, poor environmental adaptability, low overall stability, short service life, and difficult post-maintenance

At the same time, since the integrated application of multi-detectors cannot overcome the inherent technical defects of each functional detection itself, one of the detectors will cause the entire system to lose its function.

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