Estimation of 3D geometrical properties of spheroid-like particle systems using projection images

Mathieu de Langlard (1) , Fabrice Lamadie (2, 3, 4, 5) , Sophie Charton (2, 5, 4, 3) , Johan Debayle (6, 7)

1 SIMBIOTX - SImulations en Médecine, BIOtechnologie et ToXicologie de systèmes multicellulaires
2 DMRC - Département de recherche sur les procédés pour la mine et le recyclage du combustible
3 CEA - CEA- Saclay
4 CEA-DES (ex-DEN) - CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire)
5 UM - Université de Montpellier
6 LGF-ENSMSE - Laboratoire Georges Friedel
7 SPIN-ENSMSE - Centre Sciences des Processus Industriels et Naturels

We propose a parametric method to estimate geometrical properties of a population of spheroid-like particles from 2D projection images. The method consists in, first, detecting the projection of the particles in the images, and then estimating the parameters of the supposed probability laws of the spheroids semi-axes using a Bayesian framework. Moreover, a new estimator of the Sauter mean diameter to assess the efficiency of two-phase flow processes, in the case of spheroid-like particle system, is proposed. Still in view to its practical use for the characterization of two-phase flows, the whole methodology is applied to a typical bubbly flow.

Mots clés: ellipse detection; projection; Sauter mean diameter; ellipsoids; stereology; approximate Bayesian computation; morphological characterization; Bayesian inference; spheroids; ellipse detection

Domaines: Traitement du signal et de l'image [eess.SP]; Vision par ordinateur et reconnaissance de formes [cs.CV]; Modélisation et simulation; Génie des procédés

Mathieu de Langlard, Fabrice Lamadie, Sophie Charton, Johan Debayle. Estimation of 3D geometrical properties of spheroid-like particle systems using projection images. ISIVC INTERNATIONAL SYMPOSIUM ON SIGNAL, IMAGE, VIDEO AND COMMUNICATIONS, Mines Saint-Etienne, Apr 2021, Saint-Etienne, France. pp.1-6, ⟨10.1109/ISIVC49222.2021.9487552⟩. ⟨cea-03516334⟩