The invention provides a
Gaussian modeling method combined with
laser scanning
point cloud data processing, and relates to the technical field of three-
dimensional modeling, and the method comprises the steps: carrying out the registration of a plurality of
point cloud data sets through employing a
point cloud fusion
algorithm, and obtaining a target point
cloud data set; performing data precision, position deviation and
noise influence analysis on the plurality of point
cloud data sets, determining point
cloud data precision, a position deviation coefficient and a
noise influence coefficient, and comprehensively evaluating and determining point cloud acquisition precision; setting a
data dimension reduction proportion according to the point cloud acquisition precision, and performing
covariance matrix dimension reduction on the target point cloud
data set; and selecting a predetermined kernel function, performing data fitting and
Gaussian process regression modeling on the dimension reduction point cloud
data set, and outputting a
surface fitting model. According to the method, the technical problems that the requirements for storage and computing resources are too high and efficient three-
dimensional modeling cannot be realized due to the fact that a large number of
covariance matrixes need to be calculated in a traditional
Gaussian modeling method can be solved; the dimensionality of data can be effectively reduced, and the efficiency of three-
dimensional modeling is remarkably improved.