51 citations · 171 across the 8 of their papers we have counts for
8 papers
CAB: Accelerating Flow and Diffusion Sampling via Rectification and Corrected Adams-Bashforth
Anuska Roy, Pravin Nair
Flow and diffusion models achieve high-fidelity, high-resolution image synthesis, but often require many function evaluations (NFEs) at sampling time. Existing acceleration methods…
Guided Nonlocal Patch Regularization and Efficient Filtering-Based Inversion for Multiband Fusion
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 multiban…
Plug-and-Play Regularization using Linear Solvers
Pravin Nair, Kunal N. Chaudhury
There has been tremendous research on the design of image regularizers over the years, from simple Tikhonov and Laplacian to sophisticated sparsity and CNN-based regularizers. Coup…
Averaged Deep Denoisers for Image Regularization
Pravin Nair, Kunal N. Chaudhury
Plug-and-Play (PnP) and Regularization-by-Denoising (RED) are recent paradigms for image reconstruction that leverage the power of modern denoisers for image regularization. In par…
Fixed-Point and Objective Convergence of Plug-and-Play Algorithms
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…
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…
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…
Optimized Fourier Bilateral Filtering
Sanjay Ghosh, Pravin Nair, Kunal N. Chaudhury
We consider the problem of approximating a truncated Gaussian kernel using Fourier (trigonometric) functions. The computation-intensive bilateral filter can be expressed using fast…