1 code implementation • 28 Sep 2023 • Chirayu D. Athalye, Kunal N. Chaudhury, Bhartendu Kumar
The present work is motivated by the following questions: Can we relax the assumptions on the forward model?
no code implementations • 9 Oct 2022 • Unni V. S., Pravin Nair, Kunal N. Chaudhury
In multiband fusion, an image with a high spatial and low spectral resolution is combined with an image with a low spatial but high spectral resolution to produce a single multiband image having high spatial and spectral resolutions.
no code implementations • 16 Sep 2022 • Pravin Nair, Kunal N. Chaudhury
Coupled with a model-based loss function, these are typically used for image reconstruction within an optimization framework.
no code implementations • 26 Jul 2022 • Ruturaj G. Gavaskar, Chirayu D. Athalye, Kunal N. Chaudhury
$Ax=A\xi$, where $A$ is a $m\times n$ random sensing matrix, $\Phi$ is the regularizer associated with a linear denoiser $W$, and $\xi$ is the ground-truth.
1 code implementation • 15 Jul 2022 • Pravin Nair, Kunal N. Chaudhury
In this work, we construct contractive and averaged image denoisers by unfolding splitting-based optimization algorithms applied to wavelet denoising and demonstrate that their regularization capacity for PnP and RED can be matched with CNN denoisers.
1 code implementation • 11 May 2021 • Ruturaj G. Gavaskar, Chirayu D. Athalye, Kunal N. Chaudhury
This is typically done by taking a proximal algorithm such as FISTA or ADMM, and formally replacing the proximal map associated with a regularizer by nonlocal means, BM3D or a CNN denoiser.
1 code implementation • 21 Apr 2021 • Pravin Nair, Ruturaj G. Gavaskar, Kunal N. Chaudhury
A standard model for image reconstruction involves the minimization of a data-fidelity term along with a regularizer, where the optimization is performed using proximal algorithms such as ISTA and ADMM.