Bellaard
me

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I'm Gijs Bellaard. I'm 27 years old and currently finishing my PhD at the Eindhoven University of Technology under the supervision of Remco Duits in the Geometric Learning and Differential Geometry group of the Centre for Analysis, Scientific Computing and Applications cluster. My interests are simulations, differential geometry, combinatorics, machine learning, and computer graphics.

News

Roto-Translation Invariant Metrics on Position-Orientation Space is published in GSI2025.
Universal Collection of Euclidean Invariants between Pairs of Position-Orientations is published in GSI2025.
Analysis and Computation of Geodesic Distances on Reductive Homogeneous Spaces is published in GSI2025.
I updated my Blackboard app with new functionality and looks.
I made my own monospaced font called Bellaard Regular.
I made my own Cartogram.
I made a Poisson Image Editing tool.
Entropic Optimal Transport with Data-Driven Metrics on the Roto-Translation Group is published in SSVM2025.
I've added a Miscellaneous section.
Optimal Transport on the Lie Group of Roto-translations is published in SIAM-SIMMS.
PDE-CNNs: Axiomatic Derivations and Applications is published in JMIV.
I made a toy flow matching model.
I made a plot visualizing the mass and diameter of various objects, together with a line indicating Schwarzschild diameter.
I made a shader visualizing Lorentz transformations.
I made a shader that simulates a 2D Kuramoto model.
I made my own notes for Remco Duits' Master Course in Typst.
The site now has a dark theme!
I made a B-Spline visualization.
I gave a presentation about Neurogeometry and PDE-Based Neural Networks at GSI2023.
I made an animation of Schwarzschild geodesics.
Functional Properties of PDE-G-CNNs is published in GSI2023.
I made a Kerr-Newman Metric Black Hole simulation.
I made the Spherical Lens app a lot more interactive.
Geometric Adaptations of PDE-G-CNNs is published in SSVM2023.
Analysis of (sub-)Riemannian PDE-G-CNNs is published in JMIV.
I made an erosion simulation.
I made a toy raytracer.
I gave a presentation about diffusion and score based models.