The invention relates to the technical field of
data processing, in particular to a GIS shell
flange surface flatness online detection method based on
structured light three-dimensional point clouds, and the method comprises the steps: carrying out the all-round scanning of a GIS shell
flange surface through a
scanner, obtaining an initial three-dimensional
point cloud set containing a plurality of sampling points, and carrying out the detection of the flatness of the GIS shell
flange surface through the initial three-dimensional
point cloud set; the method comprises the following steps: acquiring a self-adaptive search
radius of each sampling point, constructing a neighborhood sampling
point set based on the self-adaptive search
radius, performing eigenvalue
decomposition on the neighborhood sampling
point set to obtain a
local topology dispersion index, calculating a fitting
weight coefficient of each sampling point according to the
local topology dispersion index, and calculating the fitting
weight coefficient of each sampling point according to the fitting
weight coefficient. Constructing a weighted objective function to solve an optimal
reference plane equation; effective sampling points are screened out according to the
local topology dispersion index, the flatness detection value of the flange face is obtained based on the distance from the effective sampling points to the optimal
reference plane, flange face sealing
risk assessment is completed, and the accuracy of flange face flatness detection is remarkably improved.