Abstract
This paper introduces a new method for the automated segmentation of laser scanning data for decorative urban buildings. The method combines octree indexing and RANSAC - two previously established but heretofore not integrated techniques. The approach was successfully applied to terrestrial point clouds of the facades of five highly decorative urban structures for which existing approaches could not provide an automated pipeline. The segmentation technique was relatively efficient and wholly scalable requiring only 1 s per 1,000 points, regardless of the façade’s level of ornamentation or non-recti-linearity. While the technique struggled with shallow protrusions, its ability to process a wide range of building types and opening shapes with data densities as low as 400 pts/m2 demonstrate its inherent potential as part of a large and more sophisticated processing approach.
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Acknowledgments
This work was generously funded by the European Research Council grant ERC-2012-StG-20111012 ‘RETURN-Rethinking Tunnelling in Urban Neighbourhoods’ Project 307836. The authors gratefully thank Donal Lennon for the pre-processing of the data sets, as well as for assistance with data acquisition.
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Hamid-Lakzaeian, F., Laefer, D.F. (2016). An Integrated Octree-RANSAC Technique for Automated LiDAR Building Data Segmentation for Decorative Buildings. In: Bebis, G., et al. Advances in Visual Computing. ISVC 2016. Lecture Notes in Computer Science(), vol 10073. Springer, Cham. https://doi.org/10.1007/978-3-319-50832-0_44
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DOI: https://doi.org/10.1007/978-3-319-50832-0_44
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