Search Results for author: Hemant Kumar Aggarwal

Found 8 papers, 3 papers with code

Deep Image Prior using Stein's Unbiased Risk Estimator: SURE-DIP

no code implementations21 Nov 2021 Maneesh John, Hemant Kumar Aggarwal, Qing Zou, Mathews Jacob

The deep image prior (DIP) algorithm was introduced for single-shot image recovery, completely eliminating the need for training data.

Rolling Shutter Correction

Model Adaptation for Image Reconstruction using Generalized Stein's Unbiased Risk Estimator

no code implementations29 Jan 2021 Hemant Kumar Aggarwal, Mathews Jacob

Deep learning image reconstruction algorithms often suffer from model mismatches when the acquisition scheme differs significantly from the forward model used during training.

Image Reconstruction

ENSURE: A General Approach for Unsupervised Training of Deep Image Reconstruction Algorithms

no code implementations20 Oct 2020 Hemant Kumar Aggarwal, Aniket Pramanik, Maneesh John, Mathews Jacob

We introduce a novel metric termed the ENsemble Stein's Unbiased Risk Estimate (ENSURE) framework, which can be used to train deep image reconstruction algorithms without fully sampled and noise-free images.

Image Denoising Image Reconstruction

J-MoDL: Joint Model-Based Deep Learning for Optimized Sampling and Reconstruction

1 code implementation6 Nov 2019 Hemant Kumar Aggarwal, Mathews Jacob

This approach facilitates the joint and continuous optimization of the sampling pattern and the CNN parameters to improve image quality.

Image Reconstruction

Off-the-grid model based deep learning (O-MODL)

no code implementations27 Dec 2018 Aniket Pramanik, Hemant Kumar Aggarwal, Mathews Jacob

We introduce a model based off-the-grid image reconstruction algorithm using deep learned priors.

Image Reconstruction

MoDL-MUSSELS: Model-Based Deep Learning for Multi-Shot Sensitivity Encoded Diffusion MRI

1 code implementation19 Dec 2018 Hemant Kumar Aggarwal, Merry P. Mani, Mathews Jacob

In this work, we show that an iterative re-weighted least-squares implementation of MUSSELS alternates between a multichannel filter bank and the enforcement of data consistency.

MoDL: Model Based Deep Learning Architecture for Inverse Problems

3 code implementations7 Dec 2017 Hemant Kumar Aggarwal, Merry P. Mani, Mathews Jacob

Since the forward model is explicitly accounted for, a smaller network with fewer parameters is sufficient to capture the image information compared to black-box deep learning approaches, thus reducing the demand for training data and training time.

Image Reconstruction

Extension of Sparse Randomized Kaczmarz Algorithm for Multiple Measurement Vectors

no code implementations10 Jan 2014 Hemant Kumar Aggarwal, Angshul Majumdar

Recently an algorithm for finding sparse solution to a linear system of equations has been proposed based on weighted randomized Kaczmarz algorithm.

Face Recognition Fairness

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