License plate recognition method and device and electronic equipment

Abstract

The invention provides a license plate recognition method and device and electronic equipment. The method comprises the following steps: obtaining coordinate information and coarse classification information of the license plate in the target image based on a YOLO model; obtaining a license plate area image of a license plate in the target image by using the coordinate information, correcting thelicense plate area image based on an STN model, and obtaining a character recognition result in the corrected license plate area image by using an attention model; further, determining fine classification information of the license plate based on the character recognition result and the coarse classification information. According to the license plate recognition method and device, the license plate area image is corrected through the deep learning method, the influence of the imaging quality of the license plate on license plate recognition is reduced, more accurate coarse classification information and character recognition results are obtained accordingly, fine classification information is obtained through further processing on the basis, and therefore the recognition rate of license plate recognition is increased.

Description

technical field [0001] The present application relates to the technical field of image processing, in particular to a license plate recognition method, device and electronic equipment. Background technique [0002] The license plate is the "identity card" of the vehicle, which can uniquely indicate the vehicle. In security monitoring, traffic management and other fields, license plate recognition technology is widely used to obtain license plate information of vehicles in security checkpoints, entrances and exits, parking lots and other scenarios. Most of the license plates in various regions in China are composed of numbers, letters, province abbreviations and license plate uses, which can be divided into several types of license plates. [0003] Related technologies usually use the method of deep learning to extract the features of the image, and then identify the features of the image, so as to obtain the license plate information in the image. [0004] However, althoug...

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Problems solved by technology

[0004] However, although the type of license plate is relatively fixed, the imaging quality of the license plate varies widely in different scenarios, and the imaging quality will greatly affect the recognition effect of the method based on deep learning.

Therefore, in practical applications, the effect of license plate recognition is not ideal

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