A topology-based descriptor for 3D point cloud modeling: Theory and experiments

William J. Beksi, Nikolaos Papanikolopoulos

Research output: Contribution to journalArticle

Abstract

This paper presents a topology-based global descriptor that allows for efficient 3D point cloud processing tasks associated with the analysis of shapes. The descriptor is called the Signature of Topologically Persistent Points (STPP). By using persistent homology, STPP is formed by the computation of topological invariants involving the zeroth and first homology groups. Persistent homology is a methodology that finds the features of a topological space at different spatial resolutions. STPP requires no preprocessing and uses a single tuning parameter. It is an effective 3D point cloud descriptor with robustness to noisy sensor data. The paper highlights this aspect with experimental comparisons to the state of the art. Our research has been validated on a publicly available RGB-D dataset. The results show that STPP can be used as a distinctive signature by employing a small number of features with object detection and classification benefiting from its usage.

Original languageEnglish (US)
Pages (from-to)84-95
Number of pages12
JournalImage and Vision Computing
Volume88
DOIs
StatePublished - Aug 2019

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Keywords

  • Object classification
  • Persistent homology
  • Shape analysis
  • Topological data analysis

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