Abijith Jagannath Kamath
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
2026
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ICASSP 26Sparse recovery using tight frames and minimax concave penaltyIn IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Apr 2026Abstract DOI Download .bib@inproceedings{nareddy2026sparse, author = {Nareddy, K. K. R. and Bhandiwad, A. S. and Kamath, A. J. and Seelamantula, C. S.}, booktitle = {IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)}, title = {Sparse recovery using tight frames and minimax concave penalty}, year = {2026}, pages = {326-330}, keywords = {Radio broadcasting;Frequency modulation;Pixel;Modulation;Radio broadcasting;Protocols;Frequency modulation;HTTP;Digital images;Learning (artificial intelligence);Sparse recovery;tight frames;back-projection loss;minimax concave penalty;nonconvex optimization}, doi = {10.1109/ICASSP55912.2026.11465068} }
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ICASSP 26In IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Apr 2026Article Download .bib@inproceedings{jha2026event, author = {Jha, A. and Kamath, A. J. and Seelamantula, C. S. and Rao, C. V. H and Thakur, C. S.}, booktitle = {IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)}, title = {Event-driven Neuromorphic Near-Field Radar Imaging}, year = {2026}, article_page = {/articles/neuromorphic-radar/}, }
2025
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Weakly-Convex Regularization for Magnetic Resonance Image DenoisingApr 2025Cite Download .bib@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} }Link
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DeepFRI: A Deep Plug-and-Play Technique for Finite-Rate-of-Innovation Signal ReconstructionIEEE Transactions on Signal Processing, Apr 2025DOI Cite Download .bib@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} }Code Link
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In IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Apr 2025Article Cite Download .bib@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} }Link
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On the Design of Weakly-Convex Regularizers for Solving Linear Inverse ProblemsIn IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Apr 2025Cite Download .bib@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} }Link
2024
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SIAM Journal on Imaging Sciences, Apr 2024Article Cite Download .bib@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} }Link
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Neuromorphic Sensing Meets Unlimited SamplingIn IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Apr 2024Cite Download .bib@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} }Link
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Variational Analysis of Adversarial Regularization for Solving Inverse ProblemsIn IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Apr 2024Cite Download .bib@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} }Link
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Image Restoration with Generalized L2 Loss and Convergent Plug-and-Play PriorsIn IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Apr 2024Cite Download .bib@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} }Link
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SPCOM 24Method of Alternating Proximations for Solving Linear Inverse ProblemsIn International Conference on Signal Processing and Communications (SPCOM), Apr 2024Cite Download .bib@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} }Link
2023
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Neuromorphic sampling of signals in shift-invariant spacesarXiv preprint arXiv:2306.05103, Apr 2023Cite Download .bib@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} }Link
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Multichannel time-encoding of finite-rate-of-innovation signalsIn IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Apr 2023Cite Download .bib@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} }Link
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Neuromorphic Sampling of Sparse SignalsarXiv preprint arXiv:2310.15750, Apr 2023Cite Download .bib@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} }Link
2022
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Differentiate-and-fire time-encoding of finite-rate-of-innovation signalsIn IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Apr 2022Cite Download .bib@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} }Link
2021
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Time encoding of finite-rate-of-innovation signalsarXiv preprint arXiv:2107.03344, Apr 2021Cite Download .bib@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} }Link
2020
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A time-based sampling framework for finite-rate-of-innovation signalsIn IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Apr 2020Cite Download .bib@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} }Link
2019
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FRI Modelling of Fourier DescriptorsIn IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Apr 2019Cite Download .bib@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} }Link