A laser-based vehicle identification and detection method and system

Abstract

The invention provides a vehicle type recognition detection method and system based on a laser. The vehicle type recognition detection method comprises the following steps that 1, the laser measures and calculates the largest height value of a vehicle; 2, the laser compares the largest height value of the vehicle with a limit height value set in the laser; 3, the laser measures and calculates the largest length value of the vehicle and the change rate of a vehicle frame of the vehicle, compares the largest length value of the vehicle and the change rate of the vehicle frame of the vehicle with radial type standard data, and sends a comparison result to a control host; 4, the control host judges whether a vehicle image collected by a collection device is stored or not according to the comparison result of the vehicle. The types of vehicles are recognized through a vehicle type laser detector, the response speed is very high, and the accuracy rate of detection is largely improved.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a laser-based vehicle identification and detection method and system. Background technique [0002] With the development of economy and society, modern cities have become more crowded, traffic problems have attracted widespread attention, and the accelerated pace of life has made people expect better traffic conditions. [0003] In the prior art, the recognition of the vehicle type adopts the radar detection method: [0004] The millimeter-wave radar realizes the function of multi-lane information detection by analyzing the power changes of different frequency bands for different lane pairs. The common methods of millimeter wave identification mainly include: Doppler radar, high-range resolution radar, FSR radar, or a combination of Doppler radar and high-resolution radar. High-range resolution radar requires high bandwidth, and often It limits its use; FSR r...

AI Technical Summary

Problems solved by technology

The common methods of millimeter wave identification mainly include: Doppler radar, high-range resolution radar, FSR radar, or a combination of Doppler radar and high-resolution radar. High-range resolution radar requires high bandwidth, and often It limits its use; FSR radar has poor distance resolution and small working angle, so the target and radar are required to be very close; Doppler radar target detection sensitivity is high, and the recognition algorithm extracts Doppler spectrum on the basis of accurate vehicle detection feature, which can effectively reflect the outline of the car, but the way of Doppler radar detection is relatively slow, and the model can only be judged by the length of the car. Basically, it can only be judged whether it is a big car or a small car, and it cannot be truly Identification of the type of vehicle

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