51 citations · 158 across the 21 of their papers we have counts for
13 papers · 1 filter
On the Contractivity of Plug-and-Play Operators
Chirayu D. Athalye, Kunal N. Chaudhury, Bhartendu Kumar
In plug-and-play (PnP) regularization, the proximal operator in algorithms such as ISTA and ADMM is replaced by a powerful denoiser. This formal substitution works surprisingly wel…
Least-squares registration of point sets over SE (d) using closed-form projections
Sk. Miraj Ahmed, Niladri Ranjan Das, Kunal Narayan Chaudhury
Consider the problem of registering multiple point sets in some -dimensional space using rotations and translations. Assume that there are sets with common points, and moreover…
Fast High-Dimensional Kernel Filtering
Pravin Nair, Kunal N. Chaudhury
The bilateral and nonlocal means filters are instances of kernel-based filters that are popularly used in image processing. It was recently shown that fast and accurate bilateral f…
Linearized ADMM and Fast Nonlocal Denoising for Efficient Plug-and-Play Restoration
Unni V. S., Sanjay Ghosh, Kunal N. Chaudhury
In plug-and-play image restoration, the regularization is performed using powerful denoisers such as nonlocal means (NLM) or BM3D. This is done within the framework of alternating…
Fast High-Dimensional Bilateral and Nonlocal Means Filtering
Pravin Nair, Kunal. N. Chaudhury
Existing fast algorithms for bilateral and nonlocal means filtering mostly work with grayscale images. They cannot easily be extended to high-dimensional data such as color and hyp…
Fast Adaptive Bilateral Filtering
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. We consider a generalization of this filter, the…