Height limit detection method and device based on machine vision recognition

Abstract

The invention discloses a height limit detection method and device based on machine vision recognition, and the method comprises the following steps: adjusting the focal length of a camera of a photographing mechanism, and calibrating an image coordinate system of the camera; acquiring a vehicle image; acquiring height information of the target vehicle according to the longitudinal scale corresponding to the depth scale line of the target vehicle in the vehicle image; acquiring an image of a height limiting rod in front of the target vehicle; obtaining height information of a target height limiting rod according to a longitudinal scale corresponding to a scene depth scale line of the height limiting rod image where the target height limiting rod is located in the height limiting rod image;comparing the height information of the target height limiting rod with the height information of the target vehicle; obtaining a height difference. According to the detection method, vehicle overallheight detection and height limiting rod height detection can be realized, analysis is performed by comparing the heights of the detection vehicle and the height limiting rod, and whether the heightis ultrahigh is judged according to the analysis result.

Description

technical field [0001] The invention relates to the field of machine vision recognition, in particular to a height limit detection method and device based on machine vision recognition. Background technique [0002] With the improvement of our country's science and technology and economic level, there are more and more types and quantities of vehicles. For the protection of roads and the personal safety of drivers, some roads will be set with height limiters or poles; height limiters are generally used for bridges, The portal frame at the entrance of culverts and tunnels plays a protective role. Due to the emergence of various models, road planning is also being updated rapidly, and the height of the height limit pole is also different. Originally, the height limit pole is to protect the safety of drivers, passengers and goods, but because the height of most height limit poles is not According to the standard pole, the driver's unclear height of the vehicle and the lack of ...

AI Technical Summary

Problems solved by technology

Due to the emergence of various models, road planning is also being updated rapidly, and the height of the height limit pole is also different. Originally, the height limit pole is to protect the safety of drivers, passengers and goods, but because the height of most height limit poles is not According to the standard pole, the driver's unclear height of the vehicle and the lack of concentration caused the vehicle to hit the height limit pole, threatening the safety of the driver, passengers and goods, and causing serious economic losses.

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