Abijith Jagannath Kamath

PhD Student

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

BIB URL

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

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

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

Article BIB URL

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

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

BIB URL

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

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 BIB URL

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

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

BIB URL

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

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

BIB URL

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

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

BIB URL

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

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

BIB URL

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

2023

arXiv 23

Neuromorphic sampling of signals in shift-invariant spaces

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

arXiv preprint arXiv:2306.05103, 2023

BIB URL

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

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

BIB URL

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

arXiv 23

Neuromorphic Sampling of Sparse Signals

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

arXiv preprint arXiv:2310.15750, 2023

BIB URL

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

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

BIB URL

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

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

BIB URL

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

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

BIB URL

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

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

BIB URL

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