10 citations · 23 across the 6 of their papers we have counts for
6 papers
A new iterative algorithm for generating gradient directions to detect white matter fibers in brain from MRI data
Ashishi Puri, Sanjeev Kumar
This paper proposes an iterative algorithm for choosing gradient directions use to reconstruct white matter fibers in the brain. The present study is not focusing on data acquisiti…
Phase retrieval with physics informed zero-shot learning
Sanjeev Kumar
Phase can be reliably estimated from a single diffracted intensity image, if a faithful prior information about the object is available. Examples include amplitude bounds, object s…
Geometric Solution of Image Degradation by Diffraction in Lensless Sensing and Microscopy
Sanjeev Kumar, Manjunatha Mahadevappa, Pranab Kumar Dutta
This paper proposes a non-computational method of counteracting the effect of image degradation introduced by the diffraction phenomenon in lensless microscopy. All the optical ima…
Lensless in-line holographic microscopy with light source of low spatio-temporal coherence
Sanjeev Kumar, Manjunatha Mahadevappa, Pranab Kumar Dutta
Lensless microscopy with coherent or partially coherent light sources is a well known imaging technique, commonly referred as digital in-line holographic microscopy. In the establi…
EM based Framework for Single-shot Compressive Holography
Sanjeev Kumar, Manjunatha Mahadevappa, Pranab Kumar Dutta
Lensless in-line holography is a simple, portable, and cost-effective method of imaging especially for the biomedical microscopy applications. We propose a multiplicative gradient…
Photonic crystal fiber for high resolution lensless in-line holographic microscopy
Sanjeev Kumar, Manjunatha Mahadevappa, Pranab K. Dutta
We propose to use high numerical aperture single mode optical fibers like photonic crystal fiber for lensless in-line holographic microscopy. Highly divergent beam helps to overcom…