Door and window point cloud shape detecting method and system based on laser point cloud data
A technology of laser point cloud data and point cloud data, which is applied in image data processing, instruments, calculations, etc., can solve the problems of no door and window shape detection algorithm process, waste of manpower, material resources and time, low efficiency and precision, etc., to improve the survey Efficiency, reduced loss of manpower and material resources, and high precision
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[0047] The technical scheme of the present invention can use computer software to support the automatic operation process. The technical solution of the present invention will be described in detail below with reference to the drawings and embodiments.
[0048] figure 1 Shown is a flow chart of the shape detection and extraction technology based on laser point cloud data. The method of the present invention will be described in further detail below for each step in the flow of the embodiment.
[0049] (1) Data preparation: preprocess the original point cloud data to obtain point cloud data with gross errors removed.
[0050] In the embodiment, solitary points, outliers and burrs are removed: for a point Pg in the point cloud, if the distance between it and the nearest point is much greater than the average point distance of the point cloud, the Pg point is called an isolated point; At a point Pl in the cloud, if you search for its neighboring points according to a preset distance th...
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