Structured overcomplete sparsifying transform learning with convergence guarantees and applications

B Wen, S Ravishankar, Y Bresler - International Journal of Computer …, 2015 - Springer
In recent years, sparse signal modeling, especially using the synthesis model has been
popular. Sparse coding in the synthesis model is however, NP-hard. Recently, interest has …

Simultaneous detection of multiple appliances from smart-meter measurements via multi-label consistent deep dictionary learning and deep transform learning

V Singhal, J Maggu, A Majumdar - IEEE Transactions on Smart …, 2018 - ieeexplore.ieee.org
Currently there are several well-known approaches to non-intrusive appliance load
monitoring-rule based, stochastic finite state machines, neural networks, and sparse coding …

PWLS-ULTRA: An efficient clustering and learning-based approach for low-dose 3D CT image reconstruction

X Zheng, S Ravishankar, Y Long… - IEEE transactions on …, 2018 - ieeexplore.ieee.org
The development of computed tomography (CT) image reconstruction methods that
significantly reduce patient radiation exposure, while maintaining high image quality is an …

Online sparsifying transform learning—Part I: Algorithms

S Ravishankar, B Wen, Y Bresler - IEEE Journal of Selected …, 2015 - ieeexplore.ieee.org
Techniques exploiting the sparsity of signals in a transform domain or dictionary have been
popular in signal processing. Adaptive synthesis dictionaries have been shown to be useful …

Data-driven learning of a union of sparsifying transforms model for blind compressed sensing

S Ravishankar, Y Bresler - IEEE Transactions on Computational …, 2016 - ieeexplore.ieee.org
Compressed sensing is a powerful tool in applications such as magnetic resonance imaging
(MRI). It enables accurate recovery of images from highly undersampled measurements by …

Kernelized transformed subspace clustering with geometric weights for non-linear manifolds

J Maggu, A Majumdar - Neurocomputing, 2023 - Elsevier
The naive assumption of subspace clustering is that the data should be separable into
separate subspaces. Another consideration of the conventional subspace clustering …

Disaggregating transform learning for non-intrusive load monitoring

M Gaur, A Majumdar - IEEE Access, 2018 - ieeexplore.ieee.org
This paper addresses the problem of energy disaggregation/non-intrusive load monitoring. It
introduces a new method based on the transform learning formulation. Several recent …

[图书][B] Compressed sensing for engineers

A Majumdar - 2018 - taylorfrancis.com
Compressed Sensing (CS) in theory deals with the problem of recovering a sparse signal
from an under-determined system of linear equations. The topic is of immense practical …

Video denoising by online 3D sparsifying transform learning

B Wen, S Ravishankar, Y Bresler - 2015 IEEE International …, 2015 - ieeexplore.ieee.org
Exploiting the sparsity of signals in an adaptive dictionary or transform domain benefits
various applications in image/video processing. As opposed to synthesis dictionary learning …

Scale-space multi-view bag of words for scene categorization

D Giveki - Multimedia Tools and Applications, 2021 - Springer
As a widely-used method in the image categorization tasks, the Bag-of-Words (BoW) method
still suffers from many limitations such as overlooking spatial information. In this paper, we …