Multi-camera stereoscopic shooting based pavement damage crack detection system and method

Abstract

The invention discloses a multi-camera stereoscopic shooting based pavement damage crack detection system and method. The system comprises a test system and an image processing module. The test system includes cameras, camera supports and test mark cards. Two cameras are mounted on a camera support at certain angle to shoot the pavement. Through system calibration, an object image mathematical relationship can be obtained. By means of image pretreatment, cracked image treatment, image threshold segmentation and image feature extraction, the crack length can finally be calculated. The system and method provided by the invention are mainly used for road crack detection and study on detection and recognition of cracks, a new idea is put forward for exploratory study, and certain foundation for further study of the pavement crack automatic detection technology is laid. With the characteristics of small investment, fast detection speed and high precision, the stereophotogrammetry based pavement damage crack automatic detection system provided by the invention can realize simple, rapid and high precision pavement crack detection.

Description

technical field [0001] The invention belongs to the technical field of road pavement detection, and relates to an automatic detection system for road surface damage and cracks, in particular to an automatic detection system for road surface damage and cracks based on stereo shooting by multiple cameras. Background technique [0002] As the road has been exposed to the atmosphere for a long time, it has suffered from natural disasters, accident damage, vehicle wear and tear, heavy load, overload, and human damage, etc., and road maintenance is urgent. According to the current development status of China's highways, my country's highway industry will gradually transition from "construction-oriented" to "maintenance-oriented". Therefore, the road maintenance work in our country is very important, and it is bound to develop in the direction of modernization and technology. [0003] Pavement is an important part of the road, and its quality affects the service level of the road....

AI Technical Summary

Problems solved by technology

At present, a series of pavement detection systems have been researched and developed at home and abroad, but the technology of these systems is not very mature and cannot fully meet the actual requirements. There are still various technical problems to be solved, especially the automatic detection technology of pavement cracks. In-depth research on methods, implementation technologies, system development, etc.

[0004] At present, because the system equipment imported from abroad is not only expensive, but also the evaluation standards are different from those in our country, the automation of road surface damage detection has not been realized, and foreign detection systems cannot fully meet the requirements of my country's road surface detection.

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