UAlbertaVISUAL Video Image Signal Understanding and Learning Laboratory at University of Alberta

Research

Welcome to the VISUAL Lab research page.

Highlighted

2024

Disentangling Hippocampal Shape Variations: A Study of Neurological Disorders Using Mesh Variational Autoencoder with Contrastive Learning
Jakaria Rabbi, Johannes Kiechle, Christian Beaulieu, Nilanjan Ray, Dana Cobzas
Machine Learning for Biomedical Imaging  ·  25 Nov 2024  ·  doi:10.59275/j.melba.2024-267f

2023

GMCNet: A Generative Multi-Resolution Framework for Cardiac Registration
Ameneh Sheikhjafari, Michelle Noga, Ahmed Ahmed, Nilanjan Ray, Kumaradevan Punithakumar
IEEE Access  ·  01 Jan 2023  ·  doi:10.1109/ACCESS.2023.3238058

2020

River Ice Segmentation With Deep Learning
Abhineet Singh, Hayden Kalke, Mark Loewen, Nilanjan Ray
IEEE Transactions on Geoscience and Remote Sensing  ·  01 Nov 2020  ·  doi:10.1109/TGRS.2020.2981082

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2026

Tokenizing Semantic Segmentation with RLE
A Singh, J Rozeboom, N Ray
arXiv preprint arXiv:2602.21627, 2026  ·  01 Jan 2026  ·  lsb5qmsAAAAJ:SP6oXDckpogC
Tokenizing Semantic Segmentation with Run Length Encoding
A Singh, J Rozeboom, N Ray
arXiv preprint arXiv:2602.21627, 2026  ·  01 Jan 2026  ·  lsb5qmsAAAAJ:uWQEDVKXjbEC

2025

Object Detection and Segmentation with Deep Learning: From Fixed to Variable-Length Representations
AK Singh
[no publisher info]  ·  01 Jan 2025  ·  lsb5qmsAAAAJ:UxriW0iASnsC
Improving Token-based Object Detection with Video
A Singh, N Ray
IEEE Access, 2025  ·  01 Jan 2025  ·  lsb5qmsAAAAJ:dshw04ExmUIC
Scale up manufacturing approach for production of human induced pluripotent stem cell-derived islets using Vertical Wheel® bioreactors
N Dadheech, M Bermúdez de León, Z Czarnecka, N Cuesta-Gomez, …
npj Regenerative Medicine 10 (1), 1-23, 2025  ·  01 Jan 2025  ·  lsb5qmsAAAAJ:KxtntwgDAa4C
Scale up manufacturing approach for production of human induced pluripotent stem cell-derived islets using Vertical Wheel® bioreactors
N Dadheech, M Bermúdez de León, Z Czarnecka, N Cuesta-Gomez, …
NPJ Regenerative Medicine 10 (1), 24, 2025  ·  01 Jan 2025  ·  E3wuLqAAAAAJ:Dip1O2bNi0gC
Toward accurate deep learning-based prediction of Ki67, ER, PR, and HER2 status from H&E-stained breast cancer images
A Akbarnejad, N Ray, PJ Barnes, G Bigras
Applied Immunohistochemistry & Molecular Morphology 33 (3), 131-141, 2025  ·  01 Jan 2025  ·  E3wuLqAAAAAJ:TIZ-Mc8IlK0C

2024

Shadowsense: Unsupervised domain adaptation and feature fusion for shadow-agnostic tree crown detection from rgb-thermal drone imagery
R Kapil, SM Marvasti-Zadeh, N Erbilgin, N Ray
Proceedings of the IEEE/CVF Winter Conference on Applications of Computer …, 2024  ·  01 Jan 2024  ·  E3wuLqAAAAAJ:kuK5TVdYjLIC

2023

Deep MDP: A Modular Framework for Multi-Object Tracking
A Singh
arXiv preprint arXiv:2310.14294, 2023  ·  01 Jan 2023  ·  lsb5qmsAAAAJ:1sJd4Hv_s6UC
Towards Early Prediction of Human iPSC Reprogramming Success
A Singh, I Jasra, O Mouhammed, N Dadheech, N Ray, J Shapiro
arXiv preprint arXiv:2305.14575, 2023  ·  01 Jan 2023  ·  lsb5qmsAAAAJ:CHSYGLWDkRkC
Crown-CAM: Interpretable visual explanations for tree crown detection in aerial images
SM Marvasti-Zadeh, D Goodsman, N Ray, N Erbilgin
IEEE Geoscience and Remote Sensing Letters 20, 1-5, 2023  ·  01 Jan 2023  ·  E3wuLqAAAAAJ:p__nRnzSRKYC
Deep learning based parameterization of diffeomorphic image registration for cardiac image segmentation
A Sheikhjafari, D Krishnaswamy, M Noga, N Ray, K Punithakumar
IEEE Transactions on NanoBioscience 22 (4), 800-807, 2023  ·  01 Jan 2023  ·  E3wuLqAAAAAJ:EYYDruWGBe4C
Orthomosaicking thermal drone images of forests via simultaneously acquired RGB images
R Kapil, G Castilla, SM Marvasti-Zadeh, D Goodsman, N Erbilgin, N Ray
Remote Sensing 15 (10), 2653, 2023  ·  01 Jan 2023  ·  E3wuLqAAAAAJ:vbGhcppDl1QC
Early detection of bark beetle attack using remote sensing and machine learning: A review
SM Marvasti-Zadeh, D Goodsman, N Ray, N Erbilgin
ACM Computing Surveys 56 (4), 1-40, 2023  ·  01 Jan 2023  ·  E3wuLqAAAAAJ:uWiczbcajpAC

2022

Unsupervised diffeomorphic cardiac image registration using parameterization of the deformation field
A Sheikhjafari, D Krishnaswamy, M Noga, N Ray, K Punithakumar
arXiv preprint arXiv:2208.13275, 2022  ·  01 Jan 2022  ·  E3wuLqAAAAAJ:epqYDVWIO7EC
Dynamic Background Subtraction by Generative Neural Networks
F Bahri, N Ray
https://arxiv.org/abs/2202.05336, 2022  ·  01 Jan 2022  ·  E3wuLqAAAAAJ:NJ774b8OgUMC
Tiny-HR: Towards an interpretable machine learning pipeline for heart rate estimation on edge devices
P Anbukarasu, S Nanisetty, G Tata, N Ray
arXiv preprint arXiv:2208.07981, 2022  ·  01 Jan 2022  ·  E3wuLqAAAAAJ:zLWjf1WUPmwC
Classification of bark beetle-induced forest tree mortality using deep learning
R Kapil, SM Marvasti-Zadeh, D Goodsman, N Ray, N Erbilgin
arXiv preprint arXiv:2207.07241, 2022  ·  01 Jan 2022  ·  E3wuLqAAAAAJ:yB1At4FlUx8C
Fire Together Wire Together: A Dynamic Pruning Approach with Self-Supervised Mask Prediction
S Elkerdawy, M Elhoushi, H Zhang, N Ray
2022 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2022  ·  01 Jan 2022  ·  E3wuLqAAAAAJ:_Ybze24A_UAC

2021

Unknown-box Approximation to Improve Optical Character Recognition Performance
A Randika, N Ray, X Xiao, A Latimer
16th International Conference on Document Analysis and Recognition ICDAR 2021, 2021  ·  01 Jan 2021  ·  E3wuLqAAAAAJ:1yQoGdGgb4wC
Layer Importance Estimation with Imprinting for Neural Network Quantization
H Liu, S Elkerdawy, N Ray, M Elhoushi
2021 IEEE/CVF Conference on Computer Vision and Pattern Recognition …, 2021  ·  01 Jan 2021  ·  E3wuLqAAAAAJ:PR6Y55bgFSsC

2020

One-Shot Layer-Wise Accuracy Approximation For Layer Pruning
S Elkerdawy, M Elhoushi, A Singh, H Zhang, N Ray
2020 IEEE International Conference on Image Processing (ICIP), 2940-2944, 2020  ·  01 Jan 2020  ·  lsb5qmsAAAAJ:abG-DnoFyZgC
To filter prune, or to layer prune, that is the question
S Elkerdawy, M Elhoushi, A Singh, H Zhang, N Ray
Proceedings of the Asian Conference on Computer Vision, 2020  ·  01 Jan 2020  ·  lsb5qmsAAAAJ:NhqRSupF_l8C
Animal Detection in Man-made Environments
A Singh, M Pietrasik, G Natha, N Ghouaiel, K Brizel, N Ray
Proceedings of the IEEE/CVF Winter Conference on Applications of Computer …, 2020  ·  01 Jan 2020  ·  lsb5qmsAAAAJ:EUQCXRtRnyEC
River ice segmentation with deep learning
A Singh, H Kalke, M Loewen, N Ray
IEEE Transactions on Geoscience and Remote Sensing 58 (11), 7570-7579, 2020  ·  01 Jan 2020  ·  lsb5qmsAAAAJ:4TOpqqG69KYC
Automated left atrial segmentation from magnetic resonance image sequences using deep convolutional neural network with autoencoder
S Ghosh, N Ray, P Boulanger, K Punithakumar, M Noga
2020 IEEE 17th International Symposium on Biomedical Imaging (ISBI), 1756-1760, 2020  ·  01 Jan 2020  ·  E3wuLqAAAAAJ:eMMeJKvmdy0C
End-to-end learning of convolutional neural net and dynamic programming for left ventricle segmentation
NM Nguyen, N Ray
Medical Imaging with Deep Learning, 2020, 2020  ·  01 Jan 2020  ·  E3wuLqAAAAAJ:dTyEYWd-f8wC
One-shot layer-wise accuracy approximation for layer pruning
S Elkerdawy, M Elhoushi, A Singh, H Zhang, N Ray
2020 IEEE International Conference on Image Processing (ICIP), 2940-2944, 2020  ·  01 Jan 2020  ·  E3wuLqAAAAAJ:Y5dfb0dijaUC
Drmime: Differentiable mutual information and matrix exponential for multi-resolution image registration
A Nan, M Tennant, U Rubin, N Ray
Medical Imaging with Deep Learning, 527-543, 2020  ·  01 Jan 2020  ·  E3wuLqAAAAAJ:t6usbXjVLHcC
Locating Cephalometric X-Ray Landmarks with Foveated Pyramid Attention
L Gilmour, N Ray
MIDL 2020 Conference, 2020  ·  01 Jan 2020  ·  E3wuLqAAAAAJ:WA5NYHcadZ8C
To filter prune, or to layer prune, that is the question
S Elkerdawy, M Elhoushi, A Singh, H Zhang, N Ray
proceedings of the Asian conference on computer vision, 2020  ·  01 Jan 2020  ·  E3wuLqAAAAAJ:JoZmwDi-zQgC
Animal detection in man-made environments
A Singh, M Pietrasik, G Natha, N Ghouaiel, K Brizel, N Ray
Proceedings of the IEEE/CVF Winter Conference on Applications of Computer …, 2020  ·  01 Jan 2020  ·  E3wuLqAAAAAJ:5ugPr518TE4C
River Ice Segmentation With Deep Learning
A Singh, H Kalke, M Loewen, N Ray
IEEE Transactions on Geoscience and Remote Sensing, 2020  ·  01 Jan 2020  ·  E3wuLqAAAAAJ:AXPGKjj_ei8C
Small-object detection in remote sensing images with end-to-end edge-enhanced GAN and object detector network
J Rabbi, N Ray, M Schubert, S Chowdhury, D Chao
Remote Sensing 12 (9), 1432, 2020  ·  01 Jan 2020  ·  E3wuLqAAAAAJ:HE397vMXCloC

2019

Alberta River Ice Segmentation Dataset
A Singh, H Kalke, M Loewen, N Ray
IEEE Dataport: New York, NY, USA, 2019  ·  01 Jan 2019  ·  lsb5qmsAAAAJ:nb7KW1ujOQ8C
Lightweight monocular depth estimation model by joint end-to-end filter pruning
S Elkerdawy, H Zhang, N Ray
2019 IEEE International Conference on Image Processing (ICIP), 4290-4294, 2019  ·  01 Jan 2019  ·  E3wuLqAAAAAJ:wbdj-CoPYUoC
Training convolutional neural networks and compressed sensing end-to-end for microscopy cell detection
Y Xue, G Bigras, J Hugh, N Ray
IEEE transactions on medical imaging 38 (11), 2632-2641, 2019  ·  01 Jan 2019  ·  E3wuLqAAAAAJ:q3oQSFYPqjQC

2018

Improving model-based rl with adaptive rollout using uncertainty estimation
NM Nguyen, A Singh, K Tran
[no publisher info]  ·  01 Jan 2018  ·  lsb5qmsAAAAJ:MXK_kJrjxJIC
Using accelerometric and gyroscopic data to improve blood pressure prediction from pulse transit time using recurrent neural network
S Ghosh, A Banerjee, N Ray, PW Wood, P Boulanger, R Padwal
2018 IEEE International Conference on Acoustics, Speech and Signal …, 2018  ·  01 Jan 2018  ·  E3wuLqAAAAAJ:BrmTIyaxlBUC
Fine-grained vehicle classification with unsupervised parts co-occurrence learning
S Elkerdawy, N Ray, H Zhang
Proceedings of the european conference on computer vision (ECCV) Workshops, 0-0, 2018  ·  01 Jan 2018  ·  E3wuLqAAAAAJ:1qzjygNMrQYC
Online illumination invariant moving object detection by generative neural network
F Bahri, M Shakeri, N Ray
Proceedings of the 11th Indian Conference on Computer Vision, Graphics and …, 2018  ·  01 Jan 2018  ·  E3wuLqAAAAAJ:eflP2zaiRacC
Unsupervised deformable image registration with fully connected generative neural network
A Sheikhjafari, M Noga, K Punithakumar, N Ray
Medical imaging with deep learning, 2018  ·  01 Jan 2018  ·  E3wuLqAAAAAJ:5Ul4iDaHHb8C
Fast large-scale spectral clustering via explicit feature mapping
L He, N Ray, Y Guan, H Zhang
IEEE transactions on cybernetics 49 (3), 1058-1071, 2018  ·  01 Jan 2018  ·  E3wuLqAAAAAJ:geHnlv5EZngC

2017

Modular tracking framework: a unified approach to registration based tracking
A Singh
University of Alberta, 2017  ·  01 Jan 2017  ·  lsb5qmsAAAAJ:Zph67rFs4hoC
Modular tracking framework: A fast library for high precision tracking
A Singh, M Jagersand
2017 IEEE/RSJ International Conference on Intelligent Robots and Systems …, 2017  ·  01 Jan 2017  ·  lsb5qmsAAAAJ:9yKSN-GCB0IC
4-DoF tracking for robot fine manipulation tasks
M Siam, A Singh, C Perez, M Jagersand
2017 14th Conference on Computer and Robot Vision (CRV), 329-336, 2017  ·  01 Jan 2017  ·  lsb5qmsAAAAJ:WF5omc3nYNoC
Real-time salient closed boundary tracking via line segments perceptual grouping
X Qin, S He, CP Quintero, A Singh, M Dehghan, M Jagersand
2017 IEEE/RSJ International Conference on Intelligent Robots and Systems …, 2017  ·  01 Jan 2017  ·  lsb5qmsAAAAJ:qjMakFHDy7sC
Face Recognition Using Multi-modal Low-rank Dictionary Learning
H Foroughi, M Shakeri, N Ray, H Zhang
IEEE ICIP, 2017  ·  01 Jan 2017  ·  E3wuLqAAAAAJ:K3LRdlH-MEoC
Automated 3D Muscle Segmentation From MRI Data Using Convolutional Neural Network
S Ghosh, P Boulanger, ST Acton, SS Blemker, N Ray
IEEE ICIP, 2017  ·  01 Jan 2017  ·  E3wuLqAAAAAJ:Tiz5es2fbqcC
Convolutional gated recurrent networks for video semantic segmentation in automated driving
M Siam, S Valipour, M Jagersand, N Ray, S Yogamani
2017 IEEE 20th International Conference on Intelligent Transportation …, 2017  ·  01 Jan 2017  ·  E3wuLqAAAAAJ:8AbLer7MMksC
A Structured Deep-learning Based Approach for the Automated Segmentation of Human Leg Muscle from 3D MRI
S Ghosh, N Ray, P Boulanger
Computer and Robot Vision, 2017  ·  01 Jan 2017  ·  E3wuLqAAAAAJ:l7t_Zn2s7bgC
Cell Detection with Deep Convolutional Neural Network and Compressed Sensing
Y Xue, N Ray
https://arxiv.org/abs/1708.03307, 2017  ·  01 Jan 2017  ·  E3wuLqAAAAAJ:vRqMK49ujn8C
Deep Deformable Registration: Enhancing Accuracy by Fully Convolutional Neural Net
S Ghosal, N Ray
Pattern Recognition Letters 94, 81–86, 2017  ·  01 Jan 2017  ·  E3wuLqAAAAAJ:nb7KW1ujOQ8C
Object classification with joint projection and low-rank dictionary learning
H Foroughi, N Ray, H Zhang
IEEE Transactions on Image Processing 27 (2), 806-821, 2017  ·  01 Jan 2017  ·  E3wuLqAAAAAJ:KxtntwgDAa4C
Cell detection in microscopy images with deep convolutional neural network and compressed sensing
Y Xue, N Ray
arXiv preprint arXiv:1708.03307, 2017  ·  01 Jan 2017  ·  E3wuLqAAAAAJ:J-pR_7NvFogC
Recurrent fully convolutional networks for video segmentation
S Valipour, M Siam, M Jagersand, N Ray
2017 IEEE Winter Conference on Applications of Computer Vision (WACV), 29-36, 2017  ·  01 Jan 2017  ·  E3wuLqAAAAAJ:NhqRSupF_l8C
Convolutional Gated Recurrent Networks for Video Segmentation
M Siam, S Valipour, M Jagersand, N Ray
IEEE ICIP, 2017  ·  01 Jan 2017  ·  E3wuLqAAAAAJ:WbkHhVStYXYC

2016

Registration based Tracking with Structural Similarity: A Unifying Formulation.
A Singh, M Jägersand
arXiv preprint arXiv:1607.04673, 2016  ·  01 Jan 2016  ·  lsb5qmsAAAAJ:u5HHmVD_uO8C
Unifying registration based tracking: A case study with structural similarity
A Singh, M Siam, M Jagersand
arXiv preprint arXiv:1607.04673, 2016  ·  01 Jan 2016  ·  lsb5qmsAAAAJ:eQOLeE2rZwMC
Modular decomposition and analysis of registration based trackers
A Singh, A Roy, X Zhang, M Jagersand
arXiv preprint arXiv:1603.01292, 2016  ·  01 Jan 2016  ·  lsb5qmsAAAAJ:Y0pCki6q_DkC
Modular tracking framework: A unified approach to registration based tracking
A Singh, M Jagersand
arXiv preprint arXiv:1602.09130, 2016  ·  01 Jan 2016  ·  lsb5qmsAAAAJ:zYLM7Y9cAGgC
New algorithm for semiautomatic segmentation of nasal cavity and pharyngeal airway in comparison with manual segmentation using cone-beam computed tomography
NA Alsufyani, A Hess, M Noga, N Ray, MAQ Al-Saleh, MO Lagravère, …
American Journal of Orthodontics and Dentofacial Orthopedics 150 (4), 703-712, 2016  ·  01 Jan 2016  ·  E3wuLqAAAAAJ:1sJd4Hv_s6UC
Continuous blood pressure prediction from pulse transit time using ECG and PPG signals
S Ghosh, A Banerjee, N Ray, PW Wood, P Boulanger, R Padwal
2016 IEEE Healthcare Innovation Point-Of-Care Technologies Conference (HI …, 2016  ·  01 Jan 2016  ·  E3wuLqAAAAAJ:UxriW0iASnsC
Cell counting by regression using convolutional neural network
Y Xue, N Ray, J Hugh, G Bigras
European conference on computer vision, 274-290, 2016  ·  01 Jan 2016  ·  E3wuLqAAAAAJ:CHSYGLWDkRkC

2015

RKLT: 8 DOF real-time robust video tracking combing coarse RANSAC features and accurate fast template registration
X Zhang, A Singh, M Jagersand
2015 12th Conference on Computer and Robot Vision, 70-77, 2015  ·  01 Jan 2015  ·  lsb5qmsAAAAJ:W7OEmFMy1HYC
Joint Feature Selection with Low-rank Dictionary Learning.
H Foroughi, M Shakeri, N Ray, H Zhang
BMVC, 97.1-97.13, 2015  ·  01 Jan 2015  ·  E3wuLqAAAAAJ:f2IySw72cVMC
Unique people count from monocular videos
S Mukherjee, S Gil, N Ray
The Visual Computer 31 (10), 1405-1417, 2015  ·  01 Jan 2015  ·  E3wuLqAAAAAJ:u_35RYKgDlwC
Robust people counting using sparse representation and random projection
H Foroughi, N Ray, H Zhang
Pattern Recognition 48 (10), 3038-3052, 2015  ·  01 Jan 2015  ·  E3wuLqAAAAAJ:D03iK_w7-QYC
Intravital live cell triggered imaging system reveals monocyte patrolling and macrophage migration in atherosclerotic arteries
S McArdle, G Chodaczek, N Ray, K Ley
Journal of biomedical optics 20 (2), 026005-026005, 2015  ·  01 Jan 2015  ·  E3wuLqAAAAAJ:a0OBvERweLwC

2014

Online signature verification using segment-level fuzzy modelling
AQ Ansari, M Hanmandlu, J Kour, AK Singh
IET biometrics 3 (3), 113-127, 2014  ·  01 Jan 2014  ·  lsb5qmsAAAAJ:d1gkVwhDpl0C
Registering sequences of in vivo microscopy images for cell tracking using dynamic programming and minimum spanning trees
S McArdle, ST Acton, K Ley, N Ray
2014 IEEE International Conference on Image Processing (ICIP), 3547-3551, 2014  ·  01 Jan 2014  ·  E3wuLqAAAAAJ:4OULZ7Gr8RgC
VFCCV snake: A novel active contour model combining edge and regional information
J Sun, N Ray, H Zhang
2014 IEEE International Conference on Image Processing (ICIP), 927-931, 2014  ·  01 Jan 2014  ·  E3wuLqAAAAAJ:cFHS6HbyZ2cC

2013

Abandoned Object Detection in Video
AK Singh
INDIAN INSTITUTE OF INFORMATION TECHNOLOGY ALLAHABAD, 2013  ·  01 Jan 2013  ·  lsb5qmsAAAAJ:u-x6o8ySG0sC
An Assessment of the Impact of Dimensionality Reduction on the Speed and Accuracy of Hyperspectral Image Classification
A Singh, S Verma, M Raj, A Agrawal
International Journal of Advanced Computer Research 3 (3), 436, 2013  ·  01 Jan 2013  ·  lsb5qmsAAAAJ:YsMSGLbcyi4C
An interactive framework for abandoned and removed object detection in video
AK Singh, A Agrawal
2013 Annual IEEE India Conference (INDICON), 1-6, 2013  ·  01 Jan 2013  ·  lsb5qmsAAAAJ:UeHWp8X0CEIC
Ar-boost: Reducing overfitting by a robust data-driven regularization strategy
BN Saha, G Kunapuli, N Ray, JA Maldjian, S Natarajan
Joint European Conference on Machine Learning and Knowledge Discovery in …, 2013  ·  01 Jan 2013  ·  E3wuLqAAAAAJ:HoB7MX3m0LUC
Cell tracking in microscopic video using matching and linking of bipartite graphs
R Chatterjee, M Ghosh, AS Chowdhury, N Ray
Computer methods and programs in biomedicine 112 (3), 422-431, 2013  ·  01 Jan 2013  ·  E3wuLqAAAAAJ:pqnbT2bcN3wC
Adaptive shape prior in graph cut image segmentation
H Wang, H Zhang, N Ray
Pattern Recognition 46 (5), 1409-1414, 2013  ·  01 Jan 2013  ·  E3wuLqAAAAAJ:vV6vV6tmYwMC

2012

Contour interpolation using level-set analysis
DP Mukherjee, N Ray
International Journal of Image and Graphics 12 (01), 1250004, 2012  ·  01 Jan 2012  ·  E3wuLqAAAAAJ:TQgYirikUcIC
Shape based appearance model for kernel tracking
Z Wang, MB Salah, H Zhang, N Ray
Image and Vision Computing 30 (4-5), 332-344, 2012  ·  01 Jan 2012  ·  E3wuLqAAAAAJ:RGFaLdJalmkC
Seeing through clutter: Snake computation with dynamic programming for particle segmentation
N Ray, ST Acton, H Zhang
Proceedings of the 21st International Conference on Pattern Recognition …, 2012  ·  01 Jan 2012  ·  E3wuLqAAAAAJ:RYcK_YlVTxYC
Spectrogram based features selection using multiple kernel learning for speech/music discrimination
S Nilufar, N Ray, MKI Molla, K Hirose
2012 IEEE international conference on acoustics, speech and signal …, 2012  ·  01 Jan 2012  ·  E3wuLqAAAAAJ:blknAaTinKkC
Shape based local thresholding for binarization of document images
J Shi, N Ray, H Zhang
Pattern Recognition Letters 33 (1), 24-32, 2012  ·  01 Jan 2012  ·  E3wuLqAAAAAJ:hC7cP41nSMkC
Object detection with DoG scale-space: A multiple kernel learning approach
S Nilufar, N Ray, H Zhang
IEEE Transactions on Image Processing 21 (8), 3744-3756, 2012  ·  01 Jan 2012  ·  E3wuLqAAAAAJ:ns9cj8rnVeAC
Clump splitting via bottleneck detection and shape classification
H Wang, H Zhang, N Ray
Pattern Recognition 45 (7), 2780-2787, 2012  ·  01 Jan 2012  ·  E3wuLqAAAAAJ:hMod-77fHWUC
Quick detection of brain tumors and edemas: A bounding box method using symmetry
BN Saha, N Ray, R Greiner, A Murtha, H Zhang
Computerized medical imaging and graphics 36 (2), 95-107, 2012  ·  01 Jan 2012  ·  E3wuLqAAAAAJ:Wp0gIr-vW9MC

2011

Issues and challenges of tourism development in West Bengal, India
A Banerjee, N Ray, S Ghosh
International Conference on Management (ICM 2011) Proceeding.[cited 03 …, 2011  ·  01 Jan 2011  ·  E3wuLqAAAAAJ:SpbeaW3--B0C
Computation of fluid and particle motion from a time-sequenced image pair: A global outlier identification approach
N Ray
IEEE transactions on image processing 20 (10), 2925-2936, 2011  ·  01 Jan 2011  ·  E3wuLqAAAAAJ:L8Ckcad2t8MC
Clump splitting via bottleneck detection
H Wang, H Zhang, N Ray
2011 18th IEEE International Conference on Image Processing, 61-64, 2011  ·  01 Jan 2011  ·  E3wuLqAAAAAJ:ZeXyd9-uunAC
Anovel framework for automatic passenger counting
S Mukherjee, BN Saha, I Jamal, R Leclerc, N Ray
2011 18th IEEE international conference on image processing, 2969-2972, 2011  ·  01 Jan 2011  ·  E3wuLqAAAAAJ:lSLTfruPkqcC

2010

A concave cost formulation for parametric curve fitting: Detection of leukocytes from intravital microscopy images
N Ray
2010 IEEE International Conference on Image Processing, 53-56, 2010  ·  01 Jan 2010  ·  E3wuLqAAAAAJ:4TOpqqG69KYC
Cell tracking in video microscopy using bipartite graph matching
AS Chowdhury, R Chatterjee, M Ghosh, N Ray
2010 20th International Conference on Pattern Recognition, 2456-2459, 2010  ·  01 Jan 2010  ·  E3wuLqAAAAAJ:YOwf2qJgpHMC
Automatic segmentation of spinal cord MRI using symmetric boundary tracing
DP Mukherjee, I Cheng, N Ray, V Mushahwar, M Lebel, A Basu
IEEE Transactions on Information Technology in Biomedicine 14 (5), 1275-1278, 2010  ·  01 Jan 2010  ·  E3wuLqAAAAAJ:qUcmZB5y_30C

2009

Optimum kernel function design from scale space features for object detection
S Nilufar, N Ray, H Zhang
2009 16th IEEE International Conference on Image Processing (ICIP), 861-864, 2009  ·  01 Jan 2009  ·  E3wuLqAAAAAJ:k_IJM867U9cC
Solidity based local threshold for oil sand image segmentation
J Shi, H Zhang, N Ray
2009 16th IEEE International Conference on Image Processing (ICIP), 2385-2388, 2009  ·  01 Jan 2009  ·  E3wuLqAAAAAJ:M3ejUd6NZC8C
Snake validation: A PCA-based outlier detection method
BN Saha, N Ray, H Zhang
IEEE signal processing letters 16 (6), 549-552, 2009  ·  01 Jan 2009  ·  E3wuLqAAAAAJ:8k81kl-MbHgC
Biomedical image analysis: Segmentation
ST Acton, N Ray
Morgan & Claypool Publishers, 2009  ·  01 Jan 2009  ·  E3wuLqAAAAAJ:5nxA0vEk-isC
Image thresholding by variational minimax optimization
BN Saha, N Ray
Pattern Recognition 42 (5), 843-856, 2009  ·  01 Jan 2009  ·  E3wuLqAAAAAJ:W7OEmFMy1HYC

2008

An affine transformation invariance approach to cell tracking
J Cui, N Ray, ST Acton, Z Lin
Computerized Medical Imaging and Graphics 32 (7), 554-565, 2008  ·  01 Jan 2008  ·  E3wuLqAAAAAJ:KlAtU1dfN6UC
Computing oil sand particle size distribution by snake-PCA algorithm
BN Saha, N Ray, H Zhang
2008 IEEE International Conference on Acoustics, Speech and Signal …, 2008  ·  01 Jan 2008  ·  E3wuLqAAAAAJ:Zph67rFs4hoC
Graph-cut optimization of the ratio of functions and its application to image segmentation.
MH Wang, N Ray, H Zhang
ICIP, 749-752, 2008  ·  01 Jan 2008  ·  E3wuLqAAAAAJ:hqOjcs7Dif8C
Automatic blood cell classification based on joint histogram based feature and Bhattacharya Kernel
S Nilufar, N Ray, H Zhang
2008 42nd Asilomar conference on signals, systems and computers, 1915-1918, 2008  ·  01 Jan 2008  ·  E3wuLqAAAAAJ:qxL8FJ1GzNcC
Texture based background subtraction
D Zhou, H Zhang, N Ray
2008 International Conference on Information and Automation, 601-605, 2008  ·  01 Jan 2008  ·  E3wuLqAAAAAJ:LkGwnXOMwfcC
Using symmetry to detect abnormalies in brain MRI
N Ray, R Greiner, A Murtha
Computer Society of India Communications 31 (19), 7-10, 2008  ·  01 Jan 2008  ·  E3wuLqAAAAAJ:_FxGoFyzp5QC

2007

Locating brain tumors from MR imagery using symmetry
N Ray, BN Saha, MRG Brown
2007 Conference Record of the Forty-First Asilomar Conference on Signals …, 2007  ·  01 Jan 2007  ·  E3wuLqAAAAAJ:kNdYIx-mwKoC
Edge sensitive variational image thresholding
N Ray, BN Saha
2007 IEEE International Conference on Image Processing 6, VI-37-VI-40, 2007  ·  01 Jan 2007  ·  E3wuLqAAAAAJ:Se3iqnhoufwC

2006

Rolling leukocyte detection based on teardrop shape and the gradient inverse coefficient of variation
S Sahoo, N Ray, ST Acton
International Conference on Medical Information Visualisation-BioMedical …, 2006  ·  01 Jan 2006  ·  E3wuLqAAAAAJ:3fE2CSJIrl8C
Biomedical image analysis: tracking
ST Acton, N Ray
Synthesis Lectures on Image, Video, and Multimedia Processing 2 (1), 1-152, 2006  ·  01 Jan 2006  ·  E3wuLqAAAAAJ:WF5omc3nYNoC

2005

Tracking multiple cells by correspondence resolution in a sequential Bayesian framework
N Ray, G Dong, ST Acton
IEEE International Conference on Image Processing 2005 1, I-705, 2005  ·  01 Jan 2005  ·  E3wuLqAAAAAJ:9ZlFYXVOiuMC
Inclusion filters: A class of self-dual connected operators
N Ray, ST Acton
IEEE Transactions on Image Processing 14 (11), 1736-1746, 2005  ·  01 Jan 2005  ·  E3wuLqAAAAAJ:Tyk-4Ss8FVUC
Data acceptance for automated leukocyte tracking through segmentation of spatiotemporal images
N Ray, ST Acton
IEEE Transactions on Biomedical Engineering 52 (10), 1702-1712, 2005  ·  01 Jan 2005  ·  E3wuLqAAAAAJ:UeHWp8X0CEIC
Intravital leukocyte detection using the gradient inverse coefficient of variation
G Dong, N Ray, ST Acton
IEEE Transactions on Medical Imaging 24 (7), 910-924, 2005  ·  01 Jan 2005  ·  E3wuLqAAAAAJ:2osOgNQ5qMEC

2004

Detection and tracking of rolling leukocytes from intravital microscopy
ST Acton, N Ray
2004 2nd IEEE International Symposium on Biomedical Imaging: Nano to Macro …, 2004  ·  01 Jan 2004  ·  E3wuLqAAAAAJ:ufrVoPGSRksC
Computer vision segmentation of the longissimus dorsi for beef quality grading
J Subbiah, N Ray, GA Kranzler, ST Acton
Transactions of the ASAE 47 (4), 1261-1268, 2004  ·  01 Jan 2004  ·  E3wuLqAAAAAJ:eQOLeE2rZwMC
Motion gradient vector flow: An external force for tracking rolling leukocytes with shape and size constrained active contours
N Ray, ST Acton
IEEE transactions on medical Imaging 23 (12), 1466-1478, 2004  ·  01 Jan 2004  ·  E3wuLqAAAAAJ:9yKSN-GCB0IC
Level set analysis for leukocyte detection and tracking
DP Mukherjee, N Ray, ST Acton
IEEE Transactions on Image processing 13 (4), 562-572, 2004  ·  01 Jan 2004  ·  E3wuLqAAAAAJ:u-x6o8ySG0sC

2003

Merging parametric active contours within homogeneous image regions for MRI-based lung segmentation
N Ray, ST Acton, T Altes, EE De Lange, JR Brookeman
IEEE transactions on medical imaging 22 (2), 189-199, 2003  ·  01 Jan 2003  ·  E3wuLqAAAAAJ:d1gkVwhDpl0C

2002

Tracking fast-rolling leukocytes in vivo with active contours
N Ray, ST Acton
Proceedings. International Conference on Image Processing 3, III-III, 2002  ·  01 Jan 2002  ·  E3wuLqAAAAAJ:roLk4NBRz8UC
Active contours for cell tracking
N Ray, ST Acton
Proceedings Fifth IEEE Southwest Symposium on Image Analysis and …, 2002  ·  01 Jan 2002  ·  E3wuLqAAAAAJ:qjMakFHDy7sC
Tracking leukocytes in vivo with shape and size constrained active contours
N Ray, ST Acton, K Ley
IEEE transactions on medical imaging 21 (10), 1222-1235, 2002  ·  01 Jan 2002  ·  E3wuLqAAAAAJ:u5HHmVD_uO8C

2001

MRI ventilation analysis by merging parametric active contours
N Ray, ST Acton, T Altes, EE de Lange
Proceedings 2001 International Conference on Image Processing (Cat. No …, 2001  ·  01 Jan 2001  ·  E3wuLqAAAAAJ:UebtZRa9Y70C
Active contour segmentation guided by AM-FM dominant component analysis
N Ray, J Havlicek, ST Acton, M Pattichis
Proceedings 2001 International Conference on Image Processing (Cat. No …, 2001  ·  01 Jan 2001  ·  E3wuLqAAAAAJ:Y0pCki6q_DkC
A fast and flexible multiresolution snake with a definite termination criterion
N Ray, B Chanda, J Das
Pattern Recognition 34 (7), 1483-1490, 2001  ·  01 Jan 2001  ·  E3wuLqAAAAAJ:IjCSPb-OGe4C

2000

Image segmentation by curve evolution with clustering
N Ray, ST Acton
Conference Record of the Thirty-Fourth Asilomar Conference on Signals …, 2000  ·  01 Jan 2000  ·  E3wuLqAAAAAJ:YsMSGLbcyi4C
Beef quality grading using machine vision
S Jeyamkondan, N Ray, GA Kranzler, N Biju
Biological Quality and Precision Agriculture II 4203, 91-101, 2000  ·  01 Jan 2000  ·  E3wuLqAAAAAJ:zYLM7Y9cAGgC

1975

Kinetics and mechanism of ammonia decomposition over alumina supported nickel catalysts
SK Roy, N Ray, D Mukherjee, S Sen
Plan Develop Division 41, 485e95, 1975  ·  01 Jan 1975  ·  E3wuLqAAAAAJ:q3CdL3IzO_QC

Hessian after Convergence: A New Perspective on Lucas Kanade Tracking
AK Singh
[no publisher info]  ·  [no date info]  ·  lsb5qmsAAAAJ:IjCSPb-OGe4C
Using Deep Learning techniques for 3D Object Recognition
AK Singh
[no publisher info]  ·  [no date info]  ·  lsb5qmsAAAAJ:3fE2CSJIrl8C
Animal Detection in Man-made Environments Supplementary
A Singh, M Pietrasik, G Natha, N Ghouaiel, K Brizel, N Ray
[no publisher info]  ·  [no date info]  ·  lsb5qmsAAAAJ:b0M2c_1WBrUC
1 CIFAR
S Elkerdawy, M Elhoushi, A Singh, H Zhang, N Ray
[no publisher info]  ·  [no date info]  ·  lsb5qmsAAAAJ:xtRiw3GOFMkC
Detection of Title Blocks in Construction Documents Using Faster R-Cnn
N Sajadfar, A Singh, N Ray, Y Mohamed
Available at SSRN 4845684, 0  ·  [no date info]  ·  lsb5qmsAAAAJ:P5F9QuxV20EC