Welcome to the website of the Geometric Representation Learning (GRL) group within department D2: Computer Vision and Machine Learning of the Max-Planck-Institute for Informatics.

Our research focus is on representations and algorithms for perception and inference in the 3D world, putting us at the intersection of computer vision, computer graphics and machine learning.


Research Vision

Computer vision becomes increasingly capable of representing the 3D world, given large sets of complete observations from sensors such as cameras or 3D scanners. However, in comparison with humans, we still lack an important ability: deriving complete representations from incomplete observations. Our group works towards replicating this human ability to approach the desired capabilities of a general computer vision system.

A key aspect of the human abilities is that observations we make are complemented by previously learned information: the world is not only sensed - to a large degree it is inferred. As a consequence, we approach this task by developing efficient machine learning algorithms that compress information from large datasets and use that information to perform inference.

We tackle algorithmic research topics in the areas of:

  • Efficient neural fields for volumetric representation
  • Processing of irregular structured and sparse data
  • Generative models as data priors

To advance the fields of:

  • 3D reconstruction from incomplete observation
  • Object- and scene generation
  • Scene understanding and modeling

If you are interested to be part of the team, reach out to us directly or via the D2 application options! We offer PhD positions. We also have Master thesis topics and HiWi positions for students from University of Saarland. We do not offer short-term internships for people not already at University of Saarland.


News

SimNP accepted at ICCV 2023
July 2023
Responsive image

Happy to announce that our paper SimNP: Learning Self-Similarity Priors between Neural Points was accepted to ICCV 2023. We present a category-level, generalizable neural point representation that learns similarity between neural points as a prior for single- and few-view reconstruction.

Geometric Representation Learning group was founded!
June 2023
Responsive image

GRL is a group within the Computer Vision and Machine Learning department of the Max-Planck-Institute for Informatics. It is headed by Jan Eric Lenssen, a recently appointed Senior Researcher.

TU Dortmund Dissertation Award!
December 2022
Responsive image

Congratulations to Jan Eric Lenssen for winning the TU Dortmund Dissertation Award 2022.

Best Paper Honourable Mention at ECCV2022!!
Oct 2022
Responsive image

Congratulations to Garvita Tiwari, Dimitrije Antic, Jan Eric Lenssen, Nikolaos Sarafianos, Tony Tung and Gerard Pons-Moll for receiving the Best Paper Honorable Mention at ECCV'22 for the paper Pose-NDF: Modeling Human Pose Manifolds with Neural Distance Fields. 3 paper awards were given out of 6773 submissions.

Latest Publications

Neural Parametric Gaussians for Monocular Non-Rigid Object Reconstruction
Devikalyan Das, Christopher Wewer, Raza Yunus, Eddy Ilg, Jan Eric Lenssen
Neural Parametric Gaussians for Monocular Non-Rigid Object Reconstruction
in arXiv preprint arXiv:2312.01196, 2023.
arXiv
Neural Point Cloud Diffusion for Disentangled 3D Shape and Appearance Generation
Philipp Schröppel, Christopher Wewer, Jan Eric Lenssen, Eddy Ilg, Thomas Brox
Neural Point Cloud Diffusion for Disentangled 3D Shape and Appearance Generation
in arXiv preprint arXiv:2312.14124, 2023.
arXiv
Relational Deep Learning: Graph Representation Learning on Relational Databases
Matthias Fey, Weihua Hu, Kexin Huang, Jan Eric Lenssen, Rishabh Ranjan, Joshua Robinson, Rex Ying, Jiaxuan You, Jure Leskovec
Relational Deep Learning: Graph Representation Learning on Relational Databases
in arXiv preprint arXiv:2312.04615, 2023.
arXiv
All publications