■Konno, T., Konno, K., Chiba, N.,
Ridge Lines Extraction by Hierarchical
Planer Segmentation of Measured Point Clouds,
Society for Art and Science, Vol.6, No.4, pp.197-206, (2007)．
Registration method unifies some point clouds measured by range sensor in order to get geometric information
of whole building. In our previous method we use feature-line matching approach to get geometric
information of a building but the result is not good enough because of the limited number of feature lines.
In this paper, we extract ridge line to increase the number of feature lines. First, we applied the hierarchical
crusting method which based on flatness of building to measured point clouds, then made a boundary line of
adjacent two regions as a ridge line. As a result, our extended method has improved the restoring building
and the strong constraint measurement conditions, compared to previous method.