System and method for accurately identifying license plate of smoky vehicle based on fixed snapshot

Abstract

The invention discloses a system and a method for accurately identifying a license plate of a smoky vehicle based on fixed snapshot, and relates to the technical field of environment monitoring. The system comprises an image acquisition module, an identification algorithm module, a snapshot algorithm module and a data analysis module. According to the invention, images in front of and behind a vehicle are acquired and analyzed; a snapshot area and a license plate identification area are set; close-up snapshot is performed on license plates in front of and behind the vehicle to obtain license plate images in front of and behind the vehicle; identification is performed; an identification result is output when license plate numbers are consistent; and when the license plate numbers are inconsistent, the license plate images in front of and behind the vehicle obtained by the close-up snapshot are identified and compared again until the license plate numbers are consistent, and the identification result is output. Therefore, the problem of inaccurate license plate information acquisition of a smoky vehicle at present is solved.

Description

technical field [0001] The invention relates to the technical field of environmental monitoring, in particular to a system and method for accurately identifying license plates of smoky vehicles based on fixed snapshots. Background technique [0002] In recent years, with the rapid development of science and technology, a large number of environmental pollution problems have come along with it. The exhaust gas of vehicles is a large pollution source of environmental pollution, and it has been highly valued by people. In response to the government's call, energy conservation and emission reduction are conducive to environmental protection. [0003] Smoky cars are a typical representative of severe pollution and seriously pollute air quality. Therefore, it is necessary to count, review and give certain penalties and improvements to smoky cars that do not meet the requirements. However, smoky vehicles often appear on multi-lane roads and their speed is so fast that the collecti...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a system and method for accurately identifying the license plate of a smoky car based on fixed snapshots. By setting an image acquisition module, a recognition algorithm module, a snapshot algorithm module, and a data analysis module, the image acquisition module acquires the image of the vehicle and then recognizes it. The algorithm module calculates and analyzes the image to obtain the recognition result. The capture algorithm module identifies the capture area and the license plate area of ​​the vehicle based on the image data and the recognition result. The close-up snapshot image data is sent to the capture algorithm module to store the license plate image data, and the data analysis module analyzes the image data stored in the capture algorithm module, and outputs the recognition result, and sets the Capture the area and recognize the license plate area Take close-up shots of the front and rear license plates of the vehicle to obtain the license plate images of the front and rear of the vehicle and perform recognition. When the license plate numbers are consistent, the recognition result is output. The license plate image is re-identified and compared until the license plate number is consistent and the recognition result is output, which solves the current problem of inaccurate collection of license plate information for smoky vehicles

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