IEEE Access (Jan 2021)

Object Detection With Component-Graphs in Multi-Band Images: Application to Source Detection in Astronomical Images

  • Thanh Xuan Nguyen,
  • Giovanni Chierchia,
  • Oleksandra Razim,
  • Reynier F. Peletier,
  • Laurent Najman,
  • Hugues Talbot,
  • Benjamin Perret

DOI
https://doi.org/10.1109/ACCESS.2021.3128519
Journal volume & issue
Vol. 9
pp. 156482 – 156491

Abstract

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In the context of mathematical morphology, component-graphs are complex but powerful structures for multi-band image modeling, processing, and analysis. In this work, we propose a novel multi-band object detection method relying on the component-graphs and statistical hypothesis tests. Our analysis shows that component-graphs are better at capturing image structures compared to the classical component-trees, with significantly higher detection capacity. Besides, we introduce two filtering algorithms to identify duplicated and partial nodes in the component-graphs. The proposed method, applied to the detection of sources on astronomical images, demonstrates a significant improvement in detecting faint objects on both multi-band simulated and real astronomical images compared to the state of the art.

Keywords