License plate number matching method and device and character information matching method and device

Abstract

The invention discloses a license plate number matching method and device and a character information matching method and device, belonging to the technical field of intelligent monitoring. The license plate number matching method comprises the following steps: obtaining a first license plate number to be matched; acquiring a license plate number library, wherein the license plate number library comprises at least one second license plate number; calculating, based on the character visual similarity, the degree of difficulty of character string editing required for conversion between each second license plate number and the first license plate number; and determining at least one second license plate number matching the first license plate number based on the degree of difficulty of character string editing. The invention can reasonably evaluate the similarity between the second license plate number and the first license plate number, and can successfully match a license plate number identifying the same vehicle with the license plate number even if the license plate number is wrong, thus ensuring the validity and rationality of the monitoring function.

Description

technical field [0001] The present invention relates to the technical field of intelligent monitoring, in particular to a method and device for matching license plate numbers, and a method and device for matching character information. Background technique [0002] Intelligent monitoring technology is widely used in highways, residential areas, parking lots and other places. The images captured by monitoring equipment can effectively record the behavior of passing vehicles. Generally, each vehicle can be identified by the license plate number of the vehicle. Therefore, in order to correspond the vehicle in the image with the actual vehicle, image recognition can be performed on the captured image to obtain the license plate number of the vehicle. [0003] Nowadays, the license plate number of a vehicle is repeatedly used in many scenarios, so as to record the behavior of the vehicle by matching the license plate number. Take the parking billing scenario as an example, see ...

AI Technical Summary

Problems solved by technology

[0005] In actual scenarios, due to factors such as shooting angle, shooting light, license plate position or stains on the license plate, when the monitoring equipment performs image recognition on different images, the obtained license plate number will also be different. The license plate number of the vehicle is A000, and the license plate number obtained when the vehicle leaves the parking lot is AOOO, which leads to the inability to match the same license plate number with AOOO, which leads to the inability of the monitoring equipment to bill the vehicle and the failure of the monitoring function. A more reasonable license plate number matching method

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