Pavement three-dimensional texture morphology accurate measurement device and method

Abstract

The invention discloses a pavement three-dimensional texture morphology accurate measurement device and method. The measurement device comprises a linear laser emitter and a binocular camera, and thelinear laser emitter emits a laser constraint line to scan a to-be-measured area of a pavement; the binocular camera completes video shooting of the to-be-measured area of the pavement in a laser constraint line scanning state; then, based on MATLAB programming, video reading, laser constraint line target extraction, sub-region segmentation, laser constraint line target centroid brightening, sub-region parallax solving, parallax matrix synthesis, three-dimensional reconstruction and other steps are achieved on a computer, and finally, measurement of the three-dimensional morphology of the pavement is completed. Compared with an existing commonly-used pavement texture morphology testing method, the method has the advantages that three-dimensional measurement of the pavement texture morphology can be conveniently achieved, the measurement precision and resolution of the pavement three-dimensional texture morphology are greatly improved, and the resolution of the pavement three-dimensional texture morphology reaches the pixel level.

Description

technical field [0001] The disclosure belongs to the field of road engineering detection and traffic safety evaluation, and specifically relates to a device and method for accurately measuring three-dimensional texture topography of road surfaces. Background technique [0002] Good anti-skid performance of pavement is an important guarantee for driving safety, and a large number of studies have shown that the anti-skid performance of pavement is closely related to the three-dimensional texture topography of its surface, and the anti-skid performance of pavement directly depends on the three-dimensional texture topography composition and distribution. The International Road Association believes that the pavement texture morphology is the most important factor affecting the anti-skid performance. Among them, the macroscopic texture morphology has a wavelength of 0.5 mm to 50 mm and a height of 0.5 mm to 20 mm. This structure is mainly determined by factors such as gradation,...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of insufficient precision, poor resolution, and difficulty in fully expressing three-dimensional information in the current road surface texture measurement methods, the present disclosure provides an accurate measurement device and method for the three-dimensional texture topography of the road surface, which can realize accurate detection of the three-dimensional texture topography of the road surface, and has the advantages of Accurate, high resolution, strong repeatability, easy operation, etc.

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