3D Laser Scanning Technology has been extensively studied because it can get large number of the target surface point cloud data quickly. In this paper, we use the terrestrial laser scanner to get the point cloud data of the rock surface, for these point cloud data, we discussed the effect of instrument scanning error and point clouds registration errors on the modeling of point cloud data, and propose methods to improve the point cloud processing according to the example, using the data processed by this method to establish a model of the rock surface. Experimental results show that the point cloud which processed by the improved method can effectively reduce the impact of point cloud data error on modeling.
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