Adaptive Partitioning of Urban Facades

Chao-Hui Shen Tsinghua University Shi-Sheng Huang Tsinghua University Hongbo Fu City University of Hong Kong Shi-Min Hu Tsinghua University

Geometric Modeling and Processing mathscidoc:1608.16046

ACM Transactions on Graphics, 30, (6), 184, 2011.12
Automatically discovering high-level facade structures in unorganized 3D point clouds of urban scenes is crucial for applications like digitalization of real cities. However, this problem is challenging due to poor-quality input data, contaminated with severe missing areas, noise and outliers. This work introduces the concept of adaptive partitioning to automatically derive a flexible and hierarchical representation of 3D urban facades. Our key observation is that urban facades are largely governed by concatenated and/or interlaced grids. Hence, unlike previous automatic facade analysis works which are typically restricted to globally rectilinear grids, we propose to automatically partition the facade in an adaptive manner, in which the splitting direction, the number and location of splitting planes are all adaptively determined. Such an adaptive partition operation is performed recursively to generate a hierarchical representation of the facade. We show that the concept of adaptive partitioning is also applicable to flexible and robust analysis of image facades. We evaluate our method on a dozen of LiDAR scans of various complexity and styles, and the image facades from the eTRIMS database and the Ecole Centrale Paris database. A series of applications that benefit from our approach are also demonstrated.
Adaptive Partitioning, Facade modeling,
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  title={Adaptive Partitioning of Urban Facades},
  author={Chao-Hui Shen, Shi-Sheng Huang, Hongbo Fu, and Shi-Min Hu},
  booktitle={ACM Transactions on Graphics},
Chao-Hui Shen, Shi-Sheng Huang, Hongbo Fu, and Shi-Min Hu. Adaptive Partitioning of Urban Facades. 2011. Vol. 30. In ACM Transactions on Graphics. pp.184.
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