License plate locating method and system

Abstract

The invention discloses a license plate locating method and system. The method comprises the steps of obtaining vehicle images; constructing an image pyramid through the vehicle images, wherein the image pyramid comprises multiple layers of images; when it is detected that the vehicle images comprise the license plate area through the image pyramid, carrying out recognition processing on license plate characters in the license plate area and determining the license plate area with the character recognition processing result meeting the preset condition; obtaining first position information of the license plate area image corresponding to the determined license plate area; extracting the positions of the license plate area at the current frame and the previous frame from multiple continuous frame images corresponding to the vehicle images, carrying out tracking processing on the information of the positions of the license plate area at the current frame and the previous frame, and regarding the information as second position information of the license plate area image when the tracking processing result meets the preset condition; integrating the first position information and the second position information to complete license plate location.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a license plate location method and system. Background technique [0002] In recent years, license plate recognition equipment has been widely used in parking lots, urban roads and other areas for automatic capture and recognition of vehicle license plates. [0003] The existing license plate recognition equipment mainly uses standard-definition analog cameras, and the license plate recognition equipment is mainly for parking lots, entrances and exits of residential areas, etc. With the development of technology and the popularization of license plate recognition technology, the application range of license plate recognition has become more and more extensive, and has developed to City roads, highways and some relatively spacious roads. However, the standard definition analog camera has the problems of insufficient image layering, contrast, and resolution, which restricts the per...

AI Technical Summary

Problems solved by technology

However, the standard definition analog camera has the problems of insufficient image layering, contrast, and resolution, which restricts the performance of the license plate recognition system.

[0004] With the development of technology, high-definition cameras and full-HD cameras have gradually become popular, making up for the shortcomings of standard-definition analog cameras in the application of license plate recognition. It is not easy to segment and identify

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