Three-dimensional fracture detection method based on ellipsoid stereoscopic representation

Abstract

The invention provides a crack three-dimensional detection method based on ellipsoid three-dimensional representation, and discloses a pavement crack dynamic detection method based on a video stream.The method comprises the following steps that step 1, a pavement three-dimensional image data matrix is read; step 2, the pavement three-dimensional image data matrix is preprocessed so as to obtain the preprocessed three-dimensional image data; step 3, filtering is performed on the preprocessed three-dimensional image data matrix so as to obtain the denoised three-dimensional image data matrix; step 4: each row of data of the denoised three-dimensional image data matrix are extracted so as to extract the complete pavement crack; step 5, the pavement crack is divided into multiple crack areas,and the representation parameters of each elliptic model of additional depth are solved; step 6, all the elliptic models of additional depth are clustered according to the representation parameters so as to obtain the clustered crack; and step 7, the crack feature value of the clustered crack is computed, and the crack is divided into the net crack and the linear crack. The computational burden and the complexity can be reduced, and the crack segments caused by the reason of loss of detail information and false depth cracks can be accurately restored to the complete crack.

Description

technical field [0001] The invention belongs to the field of road engineering, relates to an image processing technology, and specifically proposes a three-dimensional detection method for cracks based on ellipsoid three-dimensional representation. Background technique [0002] With the rapid development of my country's highway industry, especially the continuous growth of expressway mileage, highways play an increasingly important role in people's daily life, and the development of highway industry has greatly promoted the development of our country's economy. Since most highways and related facilities are exposed in nature, in addition to being affected by various force systems such as traffic loads, they are also directly or indirectly affected by various natural factors such as light, rain, snow, wind, and temperature changes. Cause various road surface diseases. Pavement cracks are one of the most common, earliest and most prone diseases among all kinds of pavement dis...

AI Technical Summary

Problems solved by technology

This method has certain limitations, and its limitations are mainly manifested in the fact that in the process of collecting crack depth information, there is a considerable part of false depth crack information (the so-called false depth cracks refer to the part of cracks that widely exist in actual pavement cracks that are Cracks filled with foreign matter such as dust), that is, there is a false depth phenomenon in the collected pavement crack depth information

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