Abstract
The three-dimensional laser scanning technology can directly obtain the spatial sample points or point cloud data on the surface of real objects. The use of point cloud data can reconstruct the surface of three-dimensional objects, which greatly promotes the development of reverse engineering. On the basis of introducing the definition of laser radar three-dimensional scanning technology and the imaging principle of laser radar, the current research status of point cloud data measurement, data preprocessing and surface reconstruction are analyzed. Firstly, the classifications of point cloud data measurement methods are introduced, then the denoising methods of point cloud data are summarized, and the methods of point cloud data surface reconstruction are summarized.
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