Shield tunneling method apparent quality method and system
A quality detection method and tunnel surface technology, which is applied in the field of shield tunnel appearance quality detection and shield tunnel structure detection and diagnosis, can solve the problem of the detection frequency and detection efficiency of the detection subject, and the total mileage is long , disease occurrence points scattered and other issues
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[0081] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0082] Refer below figure 1 , figure 2 , image 3 Detailed description of point cloud data preprocessing
[0083] Before calculating the misalignment value and ellipticity, it is necessary to preprocess the point cloud data of the multi-ring segment. Assuming that N points are obtained by scanning and detecting the data of 4 rings figure 1 The 4 steps shown are to complete the preprocessing of the po...
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