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Sub-diffraction Imaging using Fourier Ptychography and Structured Sparsity

Abstract: 

We consider the problem of super-resolution for sub-diffraction imaging. We adapt conventional Fourier ptychographic approaches, for the case where the images to be acquired have an underlying structured sparsity. We propose some sub-sampling strategies which can be easily adapted to existing ptychographic setups. We then use a novel technique called CoPRAM with some modifications, to recover sparse (and block sparse) images from sub-sampled ptychographic measurements. We demonstrate experimentally that this algorithm performs better than existing phase retrieval techniques, in terms of quality of reconstruction, using fewer number of samples.

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Paper Details

Authors:
Gauri Jagatap, Zhengyu Chen, Chinmay Hegde, Namrata Vaswani
Submitted On:
30 April 2018 - 2:40pm
Short Link:
Type:
Presentation Slides
Event:
Presenter's Name:
Gauri Jagatap
Paper Code:
3284, CIM-L1.5
Document Year:
2018
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slides-icassp18-nofigs.pdf

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[1] Gauri Jagatap, Zhengyu Chen, Chinmay Hegde, Namrata Vaswani, "Sub-diffraction Imaging using Fourier Ptychography and Structured Sparsity", IEEE SigPort, 2018. [Online]. Available: http://sigport.org/3195. Accessed: Jul. 23, 2018.
@article{3195-18,
url = {http://sigport.org/3195},
author = {Gauri Jagatap; Zhengyu Chen; Chinmay Hegde; Namrata Vaswani },
publisher = {IEEE SigPort},
title = {Sub-diffraction Imaging using Fourier Ptychography and Structured Sparsity},
year = {2018} }
TY - EJOUR
T1 - Sub-diffraction Imaging using Fourier Ptychography and Structured Sparsity
AU - Gauri Jagatap; Zhengyu Chen; Chinmay Hegde; Namrata Vaswani
PY - 2018
PB - IEEE SigPort
UR - http://sigport.org/3195
ER -
Gauri Jagatap, Zhengyu Chen, Chinmay Hegde, Namrata Vaswani. (2018). Sub-diffraction Imaging using Fourier Ptychography and Structured Sparsity. IEEE SigPort. http://sigport.org/3195
Gauri Jagatap, Zhengyu Chen, Chinmay Hegde, Namrata Vaswani, 2018. Sub-diffraction Imaging using Fourier Ptychography and Structured Sparsity. Available at: http://sigport.org/3195.
Gauri Jagatap, Zhengyu Chen, Chinmay Hegde, Namrata Vaswani. (2018). "Sub-diffraction Imaging using Fourier Ptychography and Structured Sparsity." Web.
1. Gauri Jagatap, Zhengyu Chen, Chinmay Hegde, Namrata Vaswani. Sub-diffraction Imaging using Fourier Ptychography and Structured Sparsity [Internet]. IEEE SigPort; 2018. Available from : http://sigport.org/3195