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  • #62

Closed
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Created May 05, 2014 by Sebastian Volke@volkeOwner

-RM-361-MR-Buildings detection - Detecting surfaces of buildings

For this issue it's required to detect building surfaces to treat and monitor changes separately.

This ticket is a part of the holistic desire to detect buildings from point cloud data.

Current progress: The OpenWalnut module puts the data into a voxel grid. For each voxel Eigen Vectors are calculated using the Principal Component Analysis. Afterwards points are grouped by similar Eigen Vector of the smallest Eigen Value. That corresponds to the normal vector of surfaces. Result: Currently the region merging algorithm bleeds over to many surfaces. The algorithm can also be an option to distinguish between trees and buildings. Trees have very small groups.

(from redmine: created on 2014-05-05, closed on 2015-03-14)

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