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Building hierarchical structures for 3D scenes with repeated elements

  • Xi Zhao
  • Zhenqiang Su
  • Taku Komura
  • Xinyu Yang
Original Article
  • 41 Downloads

Abstract

We propose a novel hierarchy construction algorithm for 3D scenes with repeated elements, such as classrooms with multiple desk–chair pairs. Most existing algorithms focus on scenes such as bedrooms or living rooms, which rarely contain repeated patterns. Consequently, such methods may not recognize repeated patterns, which are vital for understanding the structure and context of scenes such as classrooms. Therefore, we propose a new global optimization algorithm for recognizing repeated patterns and building hierarchical structures based on repeated patterns. First, we find a repeated template by calculating the coverage ratios and frequencies of many substructures in a scene. Once the repeated template has been determined, a minimum cost maximum flow problem can be solved to find all instances (repetitions) of it in the scene and then group objects accordingly. Second, we group objects in the region outside the repeated elements according to their adjacency. Finally, based on these two sets of results, we build the hierarchy of the entire scene. We test this hierarchy construction algorithm on the Princeton and SceneNN databases and show that our algorithm can correctly find repeated patterns and construct a hierarchy that is more similar to the ground truth than the results of previous methods.

Keywords

3D scene Scene analysis Hierarchy Repeated patterns 

Notes

Funding

This study was funded by the National Natural Science Foundation of China (61602366) and the China Postdoctoral Science Foundation (2015M582664).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’anChina
  2. 2.School of Software EngineeringXi’an Jiaotong UniversityXi’anChina
  3. 3.School of InformaticsEdinburgh UniversityEdinburghUK

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