Triangular grid establishment based on disordered point cloud of ellipsoidal surface projection
Cao Cao · Engineering of Surveying and Mapping · 2010
The spatial point cloud data to establish a triangular grid in 3D laser scan data processing is one important process.Previous methods of establishing triangular grid are shape and structurally sound,but have problem to calculate the characteristics of low efficiency with large amount of points.In this paper,carried out with Gaussian ellipsoid projection for the establishment of point cloud to establish triangular grid method,effective implementation of the surrounding grid-based point cloud data building process.Combination of point cloud data instance of a mine,based on cylindrical surface and the ellipsoid projection to establish a triangular grid of two methods were compared;results showed that the use of ellipsoid to establish a triangular grid projection method is more effective in building the top and bottom of the points cloud data topology.