Pavement apparent crack vision measuring system
A technology for visual measurement and cracks, which is applied in the direction of measuring devices, optical testing of flaws/defects, and material analysis through optical means. It can solve problems such as cracks in special locations, bulky, and difficult to carry, and achieve stable image acquisition and reduce labor. Strength, efficiency-enhancing effect
Inactive Publication Date: 2019-09-06
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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[0005] The invention provides a visual measurement system for pavement apparent cracks to solve the problems of the existing pavement crack measurement devices, which are bulky, not easy to carry, and difficult to measure cracks in special positions.
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[0023] Such as figure 1 The visual measurement system for pavement apparent cracks shown in the present invention, the visual measurement system for pavement apparent cracks, has a storage unit connected to the data acquisition device through a USB data line, and the storage unit is provided with a hard disk for storing various types of data. The signal output end of the storage unit is connected with a data calibration unit for calculating the proportional relationship between the collected image and the size of the real object. The data calibration unit outputs the calibrated data to the data analysis unit for marking road surface cracks in the image, and the data analysis unit is connected to the storage unit with bidirectional signals. In the described data analysis unit, there are:
[0024] Image preprocessing module: used to process the collected pavement surface crack images, including anisotropic diffusion filter and Kuwaraha filter. Firstly, the collected pavement c...
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The invention relates to a pavement apparent crack vision measuring system. The system is provided with a storage unit connected to a data acquisition device through a data line; the signal output endof the storage unit is connected to a data calibration unit which is used for computing a proportional relation between an acquired image and the full size; the data calibration unit outputs the calibrated data to a data analysis unit used for identifying a pavement crack in the image; and the data analysis unit is in bidirectional signal connection with the storage unit. According to the system,a defect that an inspector is easily affected by subjective factors such as fatigue and operation experience during traditional manual detection is avoided, the labor intensity of the operator is greatly reduced, and the operation efficiency is obviously improved. Compared with an existing vehicle-mounted pavement crack measuring system, the system can adapt to more scenes, and meanwhile, on-siteerection is facilitated, and adaptability is obviously enhanced.
Description
technical field [0001] The invention relates to an image processing system, in particular to a visual measurement system for pavement apparent cracks. Background technique [0002] Road traffic is an important part of the transportation system, and the road surface itself is susceptible to various damages, resulting in cracks, so road surface cracks are very important detection objects in road maintenance. However, due to the huge mileage of China's highways, it is time-consuming and labor-intensive to detect pavement cracks manually, and it is inconvenient to manually detect road cracks in some special cases, such as expressways. Therefore, an automatic detection system for pavement cracks is very important. [0003] At present, there are three main methods of pavement apparent crack measurement, which are vision-based measurement system, ground-penetrating radar-based measurement system and laser-based measurement system. Because the vision-based detection system has the...
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Login to View More IPC IPC(8): G01N21/88
CPCG01N21/8851G01N2021/8887
Inventor 彭真明龙鸿峰贺晨曹思颖何艳敏蒲恬赵学功杨春平
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA