Three-dimensional visual detection method and detection device for road surface damage information

Abstract

The invention relates to a three-dimensional visual detection method and detection device for road surface damage information. The detection method comprises the following steps that optical grating fringes are projected onto a road surface to be detected; projected optical grating fringe images are photographed correspondingly, and image information is transmitted to a processor; the image information is processed, and three-dimensional road surface image data are formed; three-dimensional reconstruction of the road surface is completed according to the three-dimensional road surface geometric data; color rendering is conducted on the three-dimensional road surface images, and road surface damage types of the road surface images subjected to color rendering are recognized through a connected domain labeling method; road surface damage characteristics of the road surface information are worked out; and finally the worked-out road surface damage characteristics serve as detection results and are output. The detection method is accurate in detection, high in efficiency and capable of detecting various kinds of road surface damage information. The invention further relates to the three-dimensional visual detection device for the road surface damage information. The detection device comprises an optical grating projector, two CCD cameras, an optical-electricity encoder and a detection control computer.

Description

technical field [0001] The invention relates to a detection method, in particular to a detection method of three-dimensional visualized road surface damage information. The invention also relates to a detection device for three-dimensional visualized road surface damage information. Background technique [0002] At present, factors such as excessive traffic load, complex traffic organization and vehicle driving, and changeable climatic conditions will cause roads, especially asphalt pavement, to be damaged to varying degrees. There are many types and types of damage, including not only two-dimensional damage such as cracks and looseness, but also three-dimensional damage such as rutting, subsidence, and wrapping. If it is not repaired in time and continues to open to traffic, it will aggravate the damage, increase the cost of road maintenance, shorten the service life of the road, and affect the safety and comfort of driving. Therefore, it is necessary to regularly inspect...

AI Technical Summary

Problems solved by technology

Although the horizontal interval detected by the line laser is very small, the problem of too large longitudinal interval is still not solved, so that in practical applications, the degree of restoration of the true shape of the road surface is greatly restricted, such as horizontal cracks and protrusions on the road surface, etc.

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