I joined the group as postdoc in September 2021. Before that, I was a PhD student at ITAV, CNRS, Toulouse, France. I worked on computational microscopy. I did my PhD thesis under the supervision of Pierre Weiss and Thomas Mangeat. 

During my PhD thesis, I proposed methods to estimate/learn spatially varying blur operator in the context of microscopy. I first developped and analyzed a framework to estimate such operators in a computationally and mathematically efficient way. Then, I matematically studied blind inverse problems in a simplified framework of isolted spike observations. Finally, I proposed machine learning procedure to solve blind inverse problems, and in particular blind deblurring.

Website

Google Scholar

Research interests

I am interested in inverse problems and blind inverse problems for various imaging systems. I am working on developing machine learning algorithms to help solve practical problems, as in Cryo-EM or fluorescence microscopy. I am interested in numerical and theoretical aspects.

Publications

2024

Differentiable Uncalibrated Imaging
, , and
IEEE Transactions on Computational Imaging, 2024
 
@article{gupta2022differentiable,
  title={Differentiable Uncalibrated Imaging},
  author={Gupta, Sidharth and Kothari, Konik and Debarnot, Valentin and Dokmani{\'c}, Ivan},
  journal={IEEE Transactions on Computational Imaging},
  year={2024},
  publisher={IEEE}
}

2023

Blind inverse problems with isolated spikes
and
Information and Inference, 2023
 
@article{debarnot2021blind,
  title={Blind inverse problems with isolated spikes},
  author={Debarnot, Valentin and Weiss, Pierre},  
  journal={Information and Inference},
  year={2023}
}
FunkNN: Neural Interpolation for Functional Generation
, , and
ICLR, 2023
More URL arXiv 
@article{khorashadizadeh2022funknn,
  title={FunkNN: Neural Interpolation for Functional Generation},
  author={Khorashadizadeh, AmirEhsan and Chaman, Anadi and Debarnot, Valentin and Dokmani{\'c}, Ivan},
  journal={ICLR},
  year={2023},
  projectpage = {https://sada.dmi.unibas.ch/en/research/implicit-neural-representation},
  volume={abs/2212.14042},
  eprint={2212.14042},
  archivePrefix={arXiv},
  url={https://openreview.net/forum?id=BT4N_v7CLrk}
}

2022

Small Transformers Compute Universal Metric Embeddings
, and
arXiv preprint arXiv:2209.06788, 2022
arXiv 
@article{kratsios2022small,
  title={Small Transformers Compute Universal Metric Embeddings},
  author={Kratsios, Anastasis and Debarnot, Valentin and Dokmani{\'c}, Ivan},
  journal={arXiv preprint arXiv:2209.06788},
  year={2022}
}
Deep-Blur: Blind Identification and Deblurring with Convolutional Neural Networks
and 
@article{debarnot2022deep,
  title={Deep-Blur: Blind Identification and Deblurring with Convolutional Neural Networks},
  author={Debarnot, Valentin and Weiss, Pierre},
  year={2022}
}
Joint Cryo-ET Alignment and Reconstruction with Neural Deformation Fields
, , and
arXiv preprint arXiv:2211.14534, 2022
arXiv 
@article{debarnot2022joint,
  title={Joint Cryo-ET Alignment and Reconstruction with Neural Deformation Fields},
  author={Debarnot, Valentin and Gupta, Sidharth and Kothari, Konik and Dokmanic, Ivan},
  journal={arXiv preprint arXiv:2211.14534},
  year={2022}
}

2020

Learning low-dimensional models of microscopes
, , and
IEEE Transactions on Computational Imaging, 2020
 
@article{debarnot2020learning,
  title={Learning low-dimensional models of microscopes},
  author={Debarnot, Valentin and Escande, Paul and Mangeat, Thomas and Weiss, Pierre},
  journal={IEEE Transactions on Computational Imaging},
  year={2020},
  publisher={IEEE}
}

2019

A scalable estimator of sets of integral operators
, and
Inverse Problems, 2019
 
@article{debarnot2019scalable,
  title={A scalable estimator of sets of integral operators},
  author={Debarnot, Valentin and Escande, Paul and Weiss, Pierre},
  journal={Inverse Problems},
  volume={35},
  number={10},
  pages={105011},
  year={2019},
  publisher={IOP Publishing}
}
Multiview Attenuation Estimation and Correction
, and
Journal of Mathematical Imaging and Vision, 2019
 
@article{debarnot2019multiview,
  title={Multiview Attenuation Estimation and Correction},
  author={Debarnot, Valentin and Kahn, Jonas and Weiss, Pierre},
  journal={Journal of Mathematical Imaging and Vision},
  volume={61},
  number={6},
  pages={780--797},
  year={2019},
  publisher={Springer}
}