Acta Geodaetica et Cartographica Sinica ›› 2024, Vol. 53 ›› Issue (9): 1715-1724.doi: 10.11947/j.AGCS.2024.20240088

• Precision Engineering Survey • Previous Articles    

A post-processing algorithm for automatic recognition of tunnel crack diseases based on segmentation masks

Bo HU1,2(), Hanxin CHEN1,2(), Song REN3, Yinghao QU1,2, Qingyi LIU1,2, Xinyue TU3, Datao WANG1,2   

  1. 1.Chongqing Institute of Surveying and Mapping Science and Technology, Chongqing 401120, China
    2.Smart City Spatial-Temporal Information and Equipment Engineering Technology Innovation Center of the Ministry of Natural Resources, Chongqing 401120, China
    3.State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing 400044, China
  • Received:2024-03-05 Published:2024-10-16
  • Contact: Hanxin CHEN E-mail:hubo@cqkcy.com;chenhx@cqkcy.com
  • About author:HU Bo (1987—), male, PhD, professorate senior engineer, majors in precision engineering surveying, intelligent measuring equipment and informatization. E-mail: hubo@cqkcy.com
  • Supported by:
    Chongqing Natural Science Foundation General Project(CSTB2022NSCQ-MSX1615);Chongqing Natural Science Foundation Innovation and Development Joint Fund Project(CSTB2023NSCQ-LZX0122);Research Project of Chongqing Planning and Natural Resources Bureau(KJ-2021054)

Abstract:

With the construction of transportation networks, the number of completed tunnels and the increasing service life of tunnels have brought great challenges to the safe operation of tunnels. Rapid detection of tunnel lining cracks and accurate extraction of crack length and width characteristics is an important guarantee for achieving efficient maintenance and safe operation of tunnel. This article proposes an efficient and accurate post-processing algorithm for tunnel crack diseases, based on the prediction segmentation mask of DeepLabV3+ semantic segmentation model. The connected domain discrimination refinement algorithm and endpoint clustering instance differentiation algorithm are used to process the mask fracture situation, achieving accurate extraction of tunnel crack skeleton and instance differentiation. Finally, the length calculation and grayscale difference value width classification algorithm are used to calculate the crack length and width characteristics. The accuracy of length and width calculation is 92.2% and 86.3%, respectively.

Key words: crack disease, semantic segmentation, intelligent computing, DeepLabV3+

CLC Number: