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A platform for research: civil engineering, architecture and urbanism
Pavement cracking detection system and method based on line structured light
The invention discloses a pavement cracking detection system and a pavement cracking detection method based on line structured light. A near infrared laser vertically irradiates to a to-be-measured pavement, a camera takes a shoot on the light vertically irradiated to the to-be-measured pavement by the near infrared laser, light stripe images are collected and transmitted to a computer, and the computer calls an image transmission storage processing module to perform storage and pavement cracking detection, so that the problem that light stripes drift up and down along the scanning direction due to ups and downs of the pavement can be avoided, and the collection precision and the detection processing speed are high. In addition, the detection method comprises the steps that the crosswise contour line of the pavement is extracted from the light stripe image sequence, then the pavement depth image through which global three-dimensional contour information of the pavement is reflected is generated by using straight-line fitting and differentiating computation stitching, and the curve shape characteristics of cracks serve as the detection basis to be distinguished from other shape signals, thus cracking extraction is realized accurately, so that errors caused by ups and downs of the pavement or vibration of a vehicle can be effectively removed in real time, and the phenomena of false detection and missing of detection are decreased.
Pavement cracking detection system and method based on line structured light
The invention discloses a pavement cracking detection system and a pavement cracking detection method based on line structured light. A near infrared laser vertically irradiates to a to-be-measured pavement, a camera takes a shoot on the light vertically irradiated to the to-be-measured pavement by the near infrared laser, light stripe images are collected and transmitted to a computer, and the computer calls an image transmission storage processing module to perform storage and pavement cracking detection, so that the problem that light stripes drift up and down along the scanning direction due to ups and downs of the pavement can be avoided, and the collection precision and the detection processing speed are high. In addition, the detection method comprises the steps that the crosswise contour line of the pavement is extracted from the light stripe image sequence, then the pavement depth image through which global three-dimensional contour information of the pavement is reflected is generated by using straight-line fitting and differentiating computation stitching, and the curve shape characteristics of cracks serve as the detection basis to be distinguished from other shape signals, thus cracking extraction is realized accurately, so that errors caused by ups and downs of the pavement or vibration of a vehicle can be effectively removed in real time, and the phenomena of false detection and missing of detection are decreased.
Pavement cracking detection system and method based on line structured light
XU GUILI (author) / ZHU CHUNXING (author) / JIA YINLIANG (author) / LI KAIYU (author) / SONG KUIYANG (author)
2015-12-02
Patent
Electronic Resource
English
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