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Saiprasad Ravishankar
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Magnetic resonance image reconstruction from highly undersampled K-Space data using dictionary learning
S Ravishankar
M.S. Thesis, 2011
1119*2011
MR image reconstruction from highly undersampled k-space data by dictionary learning
S Ravishankar, Y Bresler
IEEE transactions on medical imaging 30 (5), 1028-1041, 2010
11192010
Learning sparsifying transforms
S Ravishankar, Y Bresler
IEEE Transactions on Signal Processing 61 (5), 1072-1086, 2012
3892012
Automated feature extraction for early detection of diabetic retinopathy in fundus images
S Ravishankar, A Jain, A Mittal
Computer Vision and Pattern Recognition, 2009. CVPR 2009. IEEE Conference on …, 2009
3582009
Image reconstruction: From sparsity to data-adaptive methods and machine learning
S Ravishankar, JC Ye, JA Fessler
Proceedings of the IEEE 108 (1), 86-109, 2019
2442019
Structured overcomplete sparsifying transform learning with convergence guarantees and applications
B Wen, S Ravishankar, Y Bresler
International Journal of Computer Vision 114 (2-3), 137–167, 2015
1782015
Efficient Blind Compressed Sensing Using Sparsifying Transforms with Convergence Guarantees and Application to Magnetic Resonance Imaging
S Ravishankar, Y Bresler
SIAM Journal on Imaging Sciences 8 (4), 2519–2557, 2015
1372015
l_0 Sparsifying Transform Learning with Efficient Optimal Updates and Convergence Guarantees
S Ravishankar, Y Bresler
IEEE Transactions on Signal Processing 63 (9), 2389-2404, 2015
1182015
PWLS-ULTRA: An efficient clustering and learning-based approach for low-dose 3D CT image reconstruction
X Zheng, S Ravishankar, Y Long, JA Fessler
IEEE transactions on medical imaging 37 (6), 1498-1510, 2018
1042018
Online Sparsifying Transform Learning – Part I: Algorithms
S Ravishankar, B Wen, Y Bresler
IEEE Journal of Selected Topics in Signal Processing 9 (4), 625-636, 2015
1042015
Multi-stage contour based detection of deformable objects
S Ravishankar, A Jain, A Mittal
Computer Vision–ECCV 2008: 10th European Conference on Computer Vision …, 2008
932008
Ranging and light field imaging with transparent photodetectors
MB Lien, CH Liu, IY Chun, S Ravishankar, H Nien, M Zhou, JA Fessler, ...
Nature Photonics 14 (3), 143-148, 2020
872020
Sparsifying transform learning for compressed sensing MRI
S Ravishankar, Y Bresler
2013 IEEE 10th international symposium on biomedical imaging, 17-20, 2013
842013
Adaptive sampling design for compressed sensing MRI
S Ravishankar, Y Bresler
2011 Annual International Conference of the IEEE Engineering in Medicine and …, 2011
822011
Learning doubly sparse transforms for images
S Ravishankar, Y Bresler
IEEE Trans. Image Process. 22 (12), 4598-4612, 2013
772013
Low-rank and adaptive sparse signal (LASSI) models for highly accelerated dynamic imaging
S Ravishankar, BE Moore, RR Nadakuditi, JA Fessler
IEEE transactions on medical imaging 36 (5), 1116-1128, 2017
752017
Data-Driven Learning of a Union of Sparsifying Transforms Model for Blind Compressed Sensing
S Ravishankar, Y Bresler
IEEE Transactions on Computational Imaging 2 (3), 294-309, 2016
752016
Learning overcomplete sparsifying transforms for signal processing
S Ravishankar, Y Bresler
2013 IEEE International Conference on Acoustics, Speech and Signal …, 2013
682013
Closed-form solutions within sparsifying transform learning
S Ravishankar, Y Bresler
2013 IEEE international conference on acoustics, speech and signal …, 2013
642013
Transform learning for magnetic resonance image reconstruction: From model-based learning to building neural networks
B Wen, S Ravishankar, L Pfister, Y Bresler
IEEE Signal Processing Magazine 37 (1), 41-53, 2020
602020
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