Statistical point pattern matching technique

摘要

A statistical point pattern matching technique is used to match corresponding points selected from two or more views of a roof of a building. The technique statistically selecting points from each of orthogonal and oblique aerial views of a roof. generating radial point patterns for each aerial view, calculating the origin of each point pattern, representing the shape of the point pattern as a radial function, and Fourier-transforming the radial function to produce a feature space plot. A feature profile correlation function can then be computed to relate the point match sets. From the correlation results, a vote occupancy table can be generated to help evaluate the variance of the point match sets, indicating, with high probability, which sets of points are most likely to match one another.

主权项

1. A microprocessor-based method in a point pattern matching computation machine, the method comprising:
obtaining orthogonal and oblique views of a structure, the views being in the form of digital images; selecting representative points from each view for point matching; performing a statistical method of point pattern matching to associate similar ones of the representative points from different views; deriving height data from the points by performing a transform; and generating a three-dimensional model from the points and the height data.