A method of measuring the length of highway pavement disease based on ptz camera
A technology for expressway and length measurement, which is applied to computer components, instruments, characters and pattern recognition, etc., can solve the problems of unable to meet the workload requirements of road network-level expressway pavement maintenance, single types of detection tools, etc., to achieve guaranteed service The effect of quality and performance, saving maintenance cost and reducing interference
Active Publication Date: 2021-05-11
TONGJI UNIV
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[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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[0053] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.
[0054] like figure 1 As shown, a PTZ camera-based method for measuring the length of highway pavement disease, specifically includes the following steps:
[0055] Step S1: Obtain road surface images of colored highways containing lane lines at different viewing distances;
[0056] Step S2: Carry out Harris corner point feature extraction on the road surface image obtained in step S1, and perform straight line segment extraction on the road surface image after corner point extraction, to obtain a straight line segment image of the highway road surface;
[0057] Step S3: According to ...
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The present invention relates to a PTZ camera-based method for measuring the length of highway pavement damage, which specifically includes the following steps: Step S1: Acquiring road surface images of colored highways containing lane lines at different viewing distances; Step S2: Obtaining the acquired road surface images Carry out Harris corner point feature extraction, and extract the straight line segment from the road surface image that has completed the corner point extraction, and obtain the corresponding straight line segment image; Step S3: According to the straight line segment image of the expressway road surface, calculate the corresponding pixels of the road surface image under different viewing distances Accuracy; step S4: according to the pixel precision obtained in step S3, calculate the image lesion length of the diseased area in the pavement image of the corresponding expressway, calculate the physical length of the diseased area according to the image lesion length, and realize the disease of the expressway pavement Length measurement. Compared with the prior art, the invention has the advantages of efficiently measuring the length of road surface disease, reducing the maintenance cost of expressway road surface, improving the timeliness of road surface disease maintenance 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...
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IPC IPC(8): G06K9/00G06K9/46G06K9/34
CPCG06V20/56G06V10/267G06V10/44
Inventor 杜豫川邵春艳刘成龙潘宁曹静
Owner TONGJI UNIV