nD

An Envelope Operator for Full Convexity to Define Polyhedral Models in Digital Spaces
In a recent work, full convexity has been proposed as an alternative definition of digital convexity. It solves many problems related …
Fabien Feschet, Jacques-Olivier Lachaud
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An Envelope Operator for Full Convexity to Define Polyhedral Models in Digital Spaces
Full convexity: new characterisations and applications
Invited talk at Meeting on Tomography and Applications 2023
May 15, 2023 9:30 AM — May 17, 2023 12:30 PM Politecnico di Milano
Jacques-Olivier Lachaud, Fabien Feschet
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Full convexity: new characterisations and applications
An Alternative Definition for Digital Convexity
This paper proposes full convexity as an alternative definition of digital convexity, which is valid in arbitrary dimension. It solves …
Jacques-Olivier Lachaud
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An Alternative Definition for Digital Convexity
Full convexity for polyhedral models in digital spaces
In a recent work, full convexity has been proposed as an alternative definition of digital convexity. It solves many problems related …
Fabien Feschet, Jacques-Olivier Lachaud
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Full convexity for polyhedral models in digital spaces
Graduate School on Digital Geometry
A graduate school on digital geometry for the geometry processing community.
Jul 11, 2021 1:30 PM — 3:00 PM Toronto, Ontario (virtual)
David Coeurjolly, Jacques-Olivier Lachaud
Code Project Video Slides (PDF) Slides (Keynote)
Graduate School on Digital Geometry
Laplace--Beltrami Operator on Digital Surfaces
This article presents a novel discretization of the Laplace–Beltrami operator on digital surfaces.We adapt an existing convolution …
Thomas Caissard, David Coeurjolly, Jacques-Olivier Lachaud, Tristan Roussillon
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Laplace--Beltrami Operator on Digital Surfaces
CoMeDiC

Convergent Metrics for Digital Calculus

(ANR project ANR-15-CE40-0006)

Oct. 2015 - Jul. 2021

Principal Investigator

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CoMeDiC
Extraction of Connected Region Boundary in Multidimensional Images
This paper presents an algorithm to extract the boundary of a connected region(s) using classical topology definitions. From a given …
D. Coeurjolly, B. Kerautret, Jacques-Olivier Lachaud
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Extraction of Connected Region Boundary in Multidimensional Images
DGtal

Digital geometry tools and Algorithm.

Since 2010.

An open-source generic C++ library for digital geometry.

Co-founder

website GitHub
DGtal
Equivalence between Closed Connected n-G-Maps without Multi-Incidence and n-Surfaces
Many combinatorial structures have been designed to represent the topology of space subdivisions and images. We focus here on two …
S. Alayrangues, X. Daragon, Jacques-Olivier Lachaud, P. Lienhardt
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Equivalence between Closed Connected n-G-Maps without Multi-Incidence and n-Surfaces