Expressway pavement disease length measuring method based on PTZ camera

Abstract

The invention relates to an expressway pavement disease length measuring method based on a PTZ camera. The expressway pavement disease length measuring method specifically comprises the following steps: S1, obtaining colored expressway pavement image containing lane lines under different sight distances; s2, performing Harris corner feature extraction on the acquired road surface image, and performing straight line segment extraction on the road surface image subjected to corner extraction to obtain a corresponding straight line segment image; s3, calculating pixel precision corresponding to the pavement images under different sight distances according to the straight line segment images of the highway pavement; and S4, calculating the image disease length of the disease area in the pavement image of the corresponding expressway according to the pixel precision solved in the step S3, and calculating the physical length of the disease area according to the image disease length, therebyrealizing the measurement of the disease length of the expressway pavement. Compared with the prior art, the method has the advantages of efficiently measuring the pavement disease length, reducing the highway pavement maintenance cost, improving the pavement disease maintenance timeliness and the like.

Description

technical field [0001] The invention relates to the field of road surface disease detection, in particular to a PTZ camera-based method for measuring the length of highway road surface disease. Background technique [0002] The continuous development of my country's national economy has promoted the prominent position of transportation in the national economy and society, and the expressway, which is the main artery of transportation, has developed rapidly. With the increase of expressway construction, expressway maintenance has become the focus of traffic management departments. Pavement disease detection can well guarantee the effectiveness of expressway maintenance. At present, the severity of highway pavement disease is mainly evaluated by the length of the disease area. Automatic and efficient pavement disease detection technology plays an important role in the expressway maintenance system, and can assist expressway maintenance personnel to implement correct maintena...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a PTZ camera-based method for measuring the length of highway pavement defects in order to overcome the defects of the single type of detection tools in the prior art and the inability to meet the workload requirements of road network-level highway pavement maintenance.

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