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New discretization method applied to NBV problem: Semioctree.

L M González-deSantos1,2, J Martínez-Sánchez1,2, H González-Jorge1,2

  • 1Applied Geotechnologies Group, Departament of Natural Resources and Environmental Engineering, University of Vigo, Vigo, Spain.

Plos One
|November 2, 2018
PubMed
Summary
This summary is machine-generated.

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This study introduces a novel hybrid discretization for the Next Best View (NBV) problem, improving scan efficiency. The new method significantly speeds up 3D scanning processes by optimizing data structures.

Area of Science:

  • Computer Vision
  • Computational Geometry
  • Robotics

Background:

  • The Next Best View (NBV) problem is crucial for efficient 3D data acquisition.
  • Existing octree structures face challenges with dynamic point cloud growth in NBV.
  • Homogenous voxelization can be computationally intensive.

Purpose of the Study:

  • To develop a novel discretization methodology for the NBV problem.
  • To combine the benefits of homogenous voxelization and octree structures.
  • To improve the efficiency and speed of 3D scanning processes.

Main Methods:

  • A hybrid approach combining coarse voxelization with an octree structure.
  • Ensuring consistent discretization limits and positions across scans.
  • Adapting a previous NBV methodology to the new hybrid structure.

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Main Results:

  • The hybrid method is three times faster than homogenous voxelization at 0.2m resolution.
  • Achieved a 400% reduction in discretization elements (voxels/octants).
  • Successfully transferred information between successive scans.

Conclusions:

  • The proposed hybrid discretization offers significant speed improvements for NBV.
  • This method effectively addresses the limitations of traditional octree structures in dynamic scanning.
  • The approach enhances the overall efficiency of 3D reconstruction and data acquisition.