Abijith J. Kamath

Abijith

Abijith Kamath

PhD Student

abijithj@iisc.ac.in

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Biography

Abijith Jagannath Kamath received the Bachelor of Technology degree from the Department of Electrical and Electronics Engineering, National Institute of Technology Karnataka, Surathkal, India, in 2019. From May 2019 to Dec. 2019, he was a Project Associate at the Spectrum Lab, Department of Electrical Engineering, Indian Institute of Science (EE, IISc), Bengaluru, India. Since 2020, he has been pursuing the Ph.D. degree at EE, IISc. His research interests include sampling theories, nonconvex optimization, and machine learning for computational sensing and imaging. He is a recipient of the Prime Minister's Research Fellowship from 2020 to 2024, the Outstanding Teaching Assistant Award from EE, IISc in 2024 and the Qualcomm Innovation Fellowship India in 2025.

Publications

2025

ISCS 25

Weakly-Convex Regularization for Magnetic Resonance Image Denoising

A. Prabakar, A. S. Bhandiwad, A. J. Kamath, and C. S. Seelamantula

2025

@misc{prabakar2025weakly,
  title = {Weakly-Convex Regularization for Magnetic Resonance Image Denoising},
  author = {Prabakar, A. and Bhandiwad, A. S. and Kamath, A. J. and Seelamantula, C. S.},
  year = {2025},
  eprint = {2508.14438},
  archiveprefix = {arXiv},
  primaryclass = {eess.SP},
  url = {https://arxiv.org/abs/2508.14438},
}

IEEE TSP 25

DeepFRI: A Deep Plug-and-Play Technique for Finite-Rate-of-Innovation Signal Reconstruction

A. J. Kamath, S. B. Patil, and C. S. Seelamantula

IEEE Transactions on Signal Processing, 2025

DOI Bib Code URL

@article{kamath2025deepfri,
  title = {{DeepFRI:} A Deep Plug-and-Play Technique for Finite-Rate-of-Innovation Signal Reconstruction},
  author = {Kamath, A. J. and Patil, S. B. and Seelamantula, C. S.},
  journal = {IEEE Transactions on Signal Processing},
  year = {2025},
  url = {https://ieeexplore.ieee.org/abstract/document/11080367},
  doi = {10.1109/TSP.2025.3589394},
}

ICASSP 25

Neuromorphic Unlimited Sampling for High-Dynamic-Range Video Acquisition

A. J. Kamath, and C. S. Seelamantula

In IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2025

@inproceedings{kamath2025neuromorphic,
  author = {Kamath, A. J. and Seelamantula, C. S.},
  title = {Neuromorphic Unlimited Sampling for High-Dynamic-Range Video Acquisition},
  booktitle = {IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)},
  year = {2025},
  url = {https://scholar.google.com/citations?view_op=view_citation&hl=en&user=1g1i1B4AAAAJ&cstart=200&pagesize=100&citation_for_view=1g1i1B4AAAAJ:BJbdYPG6LGMC},
}

ICASSP 25

On the Design of Weakly-Convex Regularizers for Solving Linear Inverse Problems

A. J. Kamath, A. S. Bhandiwad, and C. S. Seelamantula

In IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2025

@inproceedings{kamath2025design,
  author = {Kamath, A. J. and Bhandiwad, A. S. and Seelamantula, C. S.},
  title = {On the Design of Weakly-Convex Regularizers for Solving Linear Inverse Problems},
  booktitle = {IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)},
  year = {2025},
  url = {https://scholar.google.com/citations?view_op=view_citation&hl=en&user=1g1i1B4AAAAJ&cstart=200&pagesize=100&citation_for_view=1g1i1B4AAAAJ:artPoR2Yc-kC},
}

2024

SIIMS 24

Tight-Frame-Like Analysis-Sparse Recovery Using Nontight Sensing Matrices

K. K. R. Nareddy, A. J. Kamath, and C. S. Seelamantula

SIAM Journal on Imaging Sciences, 2024

@article{nareddy2024tight,
  author = {Nareddy, K. K. R. and Kamath, A. J. and Seelamantula, C. S.},
  title = {Tight-Frame-Like Analysis-Sparse Recovery Using Nontight Sensing Matrices},
  journal = {SIAM Journal on Imaging Sciences},
  year = {2024},
  volume = {17},
  number = {3},
  pages = {1587--1618},
  url = {https://scholar.google.com/citations?view_op=view_citation&hl=en&user=1g1i1B4AAAAJ&cstart=100&pagesize=100&citation_for_view=1g1i1B4AAAAJ:5MTHONV0fEkC},
}

ICASSP 24

Neuromorphic Sensing Meets Unlimited Sampling

A. J. Kamath, and C. S. Seelamantula

In IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2024

@inproceedings{kamath2024neuromorphic,
  author = {Kamath, A. J. and Seelamantula, C. S.},
  title = {Neuromorphic Sensing Meets Unlimited Sampling},
  booktitle = {IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)},
  year = {2024},
  url = {https://scholar.google.com/citations?view_op=view_citation&hl=en&user=1g1i1B4AAAAJ&cstart=100&pagesize=100&citation_for_view=1g1i1B4AAAAJ:_OXeSy2IsFwC},
}

ICASSP 24

Variational Analysis of Adversarial Regularization for Solving Inverse Problems

A. S. Bhandiwad, A. J. Kamath, S. Asokan, and C. S. Seelamantula

In IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2024

@inproceedings{bhandiwad2024variational,
  author = {Bhandiwad, A. S. and Kamath, A. J. and Asokan, S. and Seelamantula, C. S.},
  title = {Variational Analysis of Adversarial Regularization for Solving Inverse Problems},
  booktitle = {IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)},
  year = {2024},
  url = {https://scholar.google.com/citations?view_op=view_citation&hl=en&user=1g1i1B4AAAAJ&cstart=100&pagesize=100&citation_for_view=1g1i1B4AAAAJ:GFxP56DSvIMC},
}

ICASSP 24

Image Restoration with Generalized L2 Loss and Convergent Plug-and-Play Priors

K. K. R. Nareddy, A. J. Kamath, and C. S. Seelamantula

In IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2024

@inproceedings{nareddy2024image,
  author = {Nareddy, K. K. R. and Kamath, A. J. and Seelamantula, C. S.},
  title = {Image Restoration with Generalized L2 Loss and Convergent Plug-and-Play Priors},
  booktitle = {IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)},
  year = {2024},
  url = {https://scholar.google.com/citations?view_op=view_citation&hl=en&user=1g1i1B4AAAAJ&cstart=100&pagesize=100&citation_for_view=1g1i1B4AAAAJ:8xutWZnSdmoC},
}

SPCOM 24

Method of Alternating Proximations for Solving Linear Inverse Problems

A. J. Kamath, N. K. K. Reddy, and C. S. Seelamantula

In International Conference on Signal Processing and Communications (SPCOM), 2024

@inproceedings{kamath2024method,
  author = {Kamath, A. J. and Reddy, N. K. K. and Seelamantula, C. S.},
  title = {Method of Alternating Proximations for Solving Linear Inverse Problems},
  booktitle = {International Conference on Signal Processing and Communications (SPCOM)},
  year = {2024},
  url = {https://scholar.google.com/citations?view_op=view_citation&hl=en&user=1g1i1B4AAAAJ&cstart=200&pagesize=100&citation_for_view=1g1i1B4AAAAJ:lvd772isFD0C},
}

2023

arXiv 23

Neuromorphic sampling of signals in shift-invariant spaces

A. J. Kamath, and C. S. Seelamantula

arXiv preprint arXiv:2306.05103, 2023

@article{kamath2023neuromorphic,
  author = {Kamath, A. J. and Seelamantula, C. S.},
  title = {Neuromorphic sampling of signals in shift-invariant spaces},
  journal = {arXiv preprint arXiv:2306.05103},
  year = {2023},
  url = {https://scholar.google.com/citations?view_op=view_citation&hl=en&user=1g1i1B4AAAAJ&cstart=100&pagesize=100&citation_for_view=1g1i1B4AAAAJ:a3BOlSfXSfwC},
}

ICASSP 23

Multichannel time-encoding of finite-rate-of-innovation signals

A. J. Kamath, and C. S. Seelamantula

In IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2023

@inproceedings{kamath2023multichannel,
  author = {Kamath, A. J. and Seelamantula, C. S.},
  title = {Multichannel time-encoding of finite-rate-of-innovation signals},
  booktitle = {IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)},
  year = {2023},
  url = {https://scholar.google.com/citations?view_op=view_citation&hl=en&user=1g1i1B4AAAAJ&cstart=100&pagesize=100&citation_for_view=1g1i1B4AAAAJ:3htObqc8RwsC},
}

arXiv 23

Neuromorphic Sampling of Sparse Signals

A. J. Kamath, and C. S. Seelamantula

arXiv preprint arXiv:2310.15750, 2023

@article{kamath2023neuromorphic_sparse,
  author = {Kamath, A. J. and Seelamantula, C. S.},
  title = {Neuromorphic Sampling of Sparse Signals},
  journal = {arXiv preprint arXiv:2310.15750},
  year = {2023},
  url = {https://scholar.google.com/citations?view_op=view_citation&hl=en&user=1g1i1B4AAAAJ&cstart=100&pagesize=100&citation_for_view=1g1i1B4AAAAJ:nZcligLrVowC},
}

2022

ICASSP 22

Differentiate-and-fire time-encoding of finite-rate-of-innovation signals

A. J. Kamath, and C. S. Seelamantula

In IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2022

@inproceedings{kamath2022differentiate,
  author = {Kamath, A. J. and Seelamantula, C. S.},
  title = {Differentiate-and-fire time-encoding of finite-rate-of-innovation signals},
  booktitle = {IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)},
  year = {2022},
  url = {https://scholar.google.com/citations?view_op=view_citation&hl=en&user=1g1i1B4AAAAJ&cstart=100&pagesize=100&citation_for_view=1g1i1B4AAAAJ:IUKN3-7HHlwC},
}

2021

arXiv 21

Time encoding of finite-rate-of-innovation signals

A. J. Kamath, S. Rudresh, and C. S. Seelamantula

arXiv preprint arXiv:2107.03344, 2021

@article{kamath2021time,
  author = {Kamath, A. J. and Rudresh, S. and Seelamantula, C. S.},
  title = {Time encoding of finite-rate-of-innovation signals},
  journal = {arXiv preprint arXiv:2107.03344},
  year = {2021},
  url = {https://scholar.google.com/citations?view_op=view_citation&hl=en&user=1g1i1B4AAAAJ&cstart=100&pagesize=100&citation_for_view=1g1i1B4AAAAJ:DUooU5lO8OsC},
}

2020

ICASSP 20

A time-based sampling framework for finite-rate-of-innovation signals

S. Rudresh, A. J. Kamath, and C. S. Seelamantula

In IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2020

@inproceedings{rudresh2020time,
  author = {Rudresh, S. and Kamath, A. J. and Seelamantula, C. S.},
  title = {A time-based sampling framework for finite-rate-of-innovation signals},
  booktitle = {IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)},
  year = {2020},
  url = {https://scholar.google.com/citations?view_op=view_citation&hl=en&user=1g1i1B4AAAAJ&pagesize=100&citation_for_view=1g1i1B4AAAAJ:edDO8Oi4QzsC},
}

2019

ICASSP 19

FRI Modelling of Fourier Descriptors

A. J. Kamath, S. Rudresh, and C. S. Seelamantula

In IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2019

@inproceedings{kamath2019fri,
  author = {Kamath, A. J. and Rudresh, S. and Seelamantula, C. S.},
  title = {FRI Modelling of Fourier Descriptors},
  booktitle = {IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)},
  year = {2019},
  url = {https://scholar.google.com/citations?view_op=view_citation&hl=en&user=1g1i1B4AAAAJ&cstart=100&pagesize=100&citation_for_view=1g1i1B4AAAAJ:M7yex6snE4oC},
}