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 • 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.
1 code implementation • 7 Apr 2020 • Ruturaj G. Gavaskar, Kunal. N. Chaudhury
Plug-and-play (PnP) method is a recent paradigm for image regularization, where the proximal operator (associated with some given regularizer) in an iterative algorithm is replaced with a powerful denoiser.
no code implementations • 31 Oct 2019 • Ruturaj G. Gavaskar, Kunal. N. Chaudhury
We argue that the original proof is incomplete, since convergence is not analyzed for one of the three possible cases outlined in the paper.
1 code implementation • 6 Nov 2018 • Ruturaj G. Gavaskar, Kunal. N. Chaudhury
In the classical bilateral filter, a fixed Gaussian range kernel is used along with a spatial kernel for edge-preserving smoothing.