License plate detection method and device

Abstract

The embodiment of the invention provides a license plate detection method and device. The method and device can solve the problem that in the prior art, a target detection model is poor in license plate detection effect in extreme weather. The license plate detection method comprises the following steps: acquiring a plurality of first vehicle images which correspond to various extreme weather types and contain different types of environmental noise and a plurality of second vehicle images corresponding to non-extreme weather types; training a pre-constructed generative adversarial network based on the first vehicle image and the random noise, and processing the random noise by using a trained adversarial network model to generate target noise; fusing the target noise with the second vehicle image to obtain a third vehicle image; training a pre-constructed target detection network based on the first vehicle image, the second vehicle image and the third vehicle image to obtain a license plate detection model; and detecting the new vehicle image based on the license plate detection model to determine the actual position of the first license plate.

Description

technical field [0001] The invention relates to the technical field of target detection, in particular to a detection method and device for a license plate. Background technique [0002] At present, for a motor vehicle driving on a highway or parked on the roadside, if the motor vehicle is speeding or parked illegally, the license plate of the motor vehicle is often detected, and on the basis of the detected license plate, the The license plate number is identified as the basis for subsequent fines. However, the effect of license plate detection is greatly affected by weather factors. For example, when the weather is clear, the target detection model has better detection performance for motor vehicle license plates; when the weather is severe, such as heavy rain, snow or fog, The target detection model cannot detect the motor vehicle license plate more accurately, which in turn leads to the inability to accurately recognize the license plate number. [0003] In the prior a...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a license plate detection method and device, the method and device can solve the problem in the prior art that the target detection model has a poor license plate detection effect in extreme weather

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