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Detection method of pavement repair area

A technology for area detection and road repair, applied in image analysis, instruments, calculations, etc., can solve problems such as uneven energy distribution of laser lines and inaccurate road repair areas, so as to avoid the influence of gray scale and threshold and improve accuracy Effect

Active Publication Date: 2021-08-31
WUHAN WUDA ZOYON SCI & TECH
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Problems solved by technology

However, the line-scanning three-dimensional measurement method is to obtain road images by scanning continuous sections of the road surface. Due to the uneven energy distribution of the laser lines output by the laser, the acquired road images have light and dark stripes, which leads to the detection of road images based on road images. The resulting pavement repair area is not accurate

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  • Detection method of pavement repair area
  • Detection method of pavement repair area
  • Detection method of pavement repair area

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Embodiment Construction

[0014] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0015] The line scan three-dimensional measurement method uses the principle of laser triangulation to form a linear laser line by projecting the line structured light of the laser onto the surface of the measured object (that is, the road surface to be repaired). The camera and the laser are at a certain angle to obtain the surface of the laser line on the measured roa...

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Abstract

The present invention provides a road repair area detection method, the method includes: taking the column data of the road image as the basic processing unit, separating and obtaining the non-reflective area in each basic processing unit in the road image; Determine the gray level and threshold value of the non-reflective area, and extract the repair feature points in the basic processing unit according to the gray level and threshold value; binarize the repair feature points, and splice the repair feature points in each basic processing unit in the road surface image , to obtain the patched binary image corresponding to the road image; to extend the patched area and denoise the patched binary image to obtain the patched area in the road image. The embodiment of the present invention uses the column data of the road surface image as the basic processing unit, effectively avoiding the influence of the horizontal light and dark stripes in the road surface image caused by the uneven distribution of laser line energy on the extraction of repair feature points, and effectively improving the road surface repair. Accuracy of region detection.

Description

technical field [0001] Embodiments of the present invention relate to the field of road surface detection, and more specifically, to a method for detecting a road surface repair area. Background technique [0002] The pavement repair area is the area formed after cracks appear on the asphalt pavement, and the road maintenance personnel use the asphalt patch to repair the cracks. The detection of pavement repair areas can greatly reduce the workload of pavement maintenance personnel, and is of great significance to the follow-up maintenance of cracks and the repair of cracks again. In related technologies, two-dimensional road surface image data is usually used to represent the gray level of the road surface. With the development of line-scanning three-dimensional measurement technology, road surface three-dimensional measurement technology has gradually become the development trend of road surface detection technology. The line-scanning three-dimensional measurement method i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T7/136G06T7/187
CPCG06T7/0002G06T7/136G06T7/187
Inventor 李清泉张德津曹民林红
Owner WUHAN WUDA ZOYON SCI & TECH
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