Publications


Refereed Papers 2017
Narges Ahmidi, Lingling Tao, Shahin Sefati, Yixin Gao, Colin Lea, Benjamın Bejar Haro, Luca Zappella, Sanjeev Khudanpur, Rene Vidal, Fellow, IEEE, Gregory D. Hager
A Dataset and Benchmarks for Segmentation and Recognition of Gestures in Robotic Surgery
Transaction of Biomedical Engineering (TBME), 2017.


Refereed Papers 2016
C Lea, A Reiter, R Vidal, GD Hager
Segmental Spatiotemporal CNNs for Fine-grained Action Segmentation
European Converence on Computer Vision (ECCV) 2016

C Rupprecht*, C Lea*, F Tombari, N Navab, GD Hager
Sensor Substitution for Video-based Action Recognition
International Conference on Intelligent Robots and Systems (IROS) 2016

SD Billings, A Sinha, A Reiter, S Leonard, M Ishii, GD Hager, and RH Taylor
Anatomically Constrained Video-CT Registration via the V-IMLOP Algorithm
Medical Image Computing and Computer-Assisted Intervention (MICCAI)

R DiPietro, C Lea, A Malpani, N Ahmidi, SS Vedula, G Lee, M Lee, and GD Hager
Recognizing Surgical Activities with Recurrent Neural Networks
Medical Image Computing and Computer-Assisted Intervention (MICCAI)

A Malpani, C Lea, CCG Chen, and GD Hager
System events: readily accessible features for surgical phase detection
Int Journal of Computer Assisted Radiology and Surgery (IJCARS) – IPCAI 2016 Issue

Y Gao, SS Vedula, G Lee, M Lee, S Khudanpur, and GD Hager
Query-by-example surgical activity detection
Int Journal of Computer Assisted Radiology and Surgery (IJCARS) – IPCAI 2016 Issue

C Li, J Bohren, E Carlson, and GD Hager.
Hierarchical Semantic Parsing for Object Pose Estimation in Densely Cluttered Scenes
International Conference on Robotics and Automation (ICRA)

C Lea, R Vidal, and GD Hager
Learning Convolutional Action Primitives for Fine-grained Action Recognition
International Conference on Robotics and Automation (ICRA)

Y Gao, SS Vedula, G Lee, M Lee, S Khudanpur, and GD Hager
Unsupervised surgical data alignment with application to automatic activity annotation
International Conference on Robotics and Automation (ICRA)

SS Vedula, A Malpani, N Ahmidi, S Khudanpur, GD Hager, and G Chen
Task-level versus segment-level quantitative metrics for surgical skill assessment
Journal of Surgical Education

SS Vedula, A Malpani, L Tao, G Chen, Y Gao, P Poddar, N Ahmidi, C Paxton, R Vidal, S Khudanpur, and GD Hager
Analysis of the Structure of Surgical Activity for a Suturing and Knot-Tying Task
PLOS ONE

A Sinha, S Leonard, A Reiter, M Ishii, RH Taylor, and GD Hager
Automatic segmentation and statistical shape modeling of the paranasal sinuses to estimate natural variations
SPIE Medical Imaging

S Leonard, A Reiter, A Sinha, M Ishii, RH Taylor, and GD Hager
Image-based navigation for functional endoscopic sinus surgery using structure from motion
SPIE Medical Imaging

A Reiter, S Leonard, A Sinha, M Ishii, RH Taylor, and GD Hager
Endoscopic-CT: learning-based photometric reconstruction for endoscopic sinus surgery
SPIE Medical Imaging


Refereed Papers 2015
C Li, A Reiter, and GD Hager
Beyond Spatial Pooling: Fine-Grained Representation Learning in Multiple Domains
Computer Vision and Pattern Recognition (CVPR)

K Guerin, C Lea, C Paxton, G Hager
A Framework for End-User Instruction of a Robot Assistant for Manufacturing
International Conference on Robotics and Automation (ICRA)

E AM Ghalamzan, C Paxton, G Hager, and L Bascetta
An incremental approach to learning generalizable robot tasks from human demonstration
International Conference on Robotics and Automation (ICRA)

S Krishnan, A Garg, S Patil, C Lea, G Hager, P Abbeel and K Goldberg
Transition state clustering: Unsupervised surgical trajectory segmentation for robot learning
International Symposium of Robotics Research (ISRR)

C Li, J Bohren, GD Hager.
Bridging the Robot Perception Gap With Mid-Level Vision
International Symposium of Robotics Research (ISRR)

C Lea, G Hager, and R Vidal
An improved model for segmentation and recognition of fine-grained activities with application to surgical training tasks
Winter Conference on Applications of Computer Vision (WACV)

WR Gray Roncal, DM Kleissas, JT Vogelstein, P Manavalan, K Lillaney, M Pekala, R Burns, RJ Vogelstein, CE Priebe, MA Chevillet and others
An automated images-to-graphs framework for high resolution connectomics
Frontiers in Neuroinformatics

Y Otake, S Leonard, A Reiter, P Rajan, JH Siewerdsen, GL Gallia, M Ishii, RH Taylor, and GD Hager
Rendering-based video-CT registration with physical constraints for image-guided endoscopic sinus surgery
SPIE Medical Imaging

I Fleming, G Hager, X Guo, HJ Kang, and E Boctor
Iterative motion compensation approach for ultrasonic thermal imaging
SPIE Medical Imaging

N Ahmidi, P Poddar, JD Jones, SS Vedula, L Ishii, G Hager and M Ishii
Automated objective surgical skill assessment in the operating room from unstructured tool motion in septoplasty
International Journal of Computer Assisted Radiology and Surgery (IJCARS)

A Malpani, SS Vedula, CCG Chen and GD Hager
A study of crowdsourced segment-level surgical skill assessment using pairwise rankings
International Journal of Computer Assisted Radiology and Surgery (IJCARS)

NP Deshmukh, JJ Caban, RH Taylor, GD Hager and EM Boctor
Five-dimensional ultrasound system for soft tissue visualization
International Journal of Computer Assisted Radiology and Surgery (IJCARS)

S Kumar, N Ahmidi, GD Hager, P Singhal, J Corso, V Krovi
Surgical Performance Assessment
American Society of Mechanical Engineers

N Ahmidi, P Poddar, JD Jones, SS Vedula, L Ishii, GD Hager, and M Ishii
Automated objective surgical skill assessment in the operating room using unstructured tool motion
Information Processing in Computer-Assisted Interventions

Workshop Papers 2015
Y Gao, SS Vedula, CE Reiley, N Ahmidi, B Varadarajan, H Lin, L Tao, L Zappella, B Bejar, D Yuh, C Chen, R Vidal, S Khudanpur, GD Hager
The jhu-isi gesture and skill assessment dataset (jigsaws): A surgical activity working set for human motion modeling
Medical Image Computing and Computer-Assisted Intervention (MICCAI)

X Xiang, D Mirota, A Reiter, and GD Hager
Is Multi-model Feature Matching Better for Endoscopic Motion Estimation?
MICCAI Workshop on Computer-Assisted and Robotic Endoscopy (CARE)

CCG Chen, E Tanner, A Malpani, SS Vedula, AN Fader, SA Scheib, IC Green, and GD Hager
Warm-Up Before Robotic Hysterectomy Does Not Improve Trainee Operative Performance: A Randomized Trial
Journal of Minimally Invasive Gynecology, Vol. 6 Issue 6 Supplement (Abstracts of the 44th AAGL Global Congress of Minimally Invasive Gynecology)

Patents 2015
P Stolka, P Foroughi, M Rendina, G Hager, E Boctor
Surgical Needle for a Surgical System with Optical Recognition
US Patent 20,150,148,668

P Stolka, P Foroughi, M Rendina, G Hager,
ULTRASOUND SYSTEM WITH STEREO IMAGE GUIDANCE OR TRACKING
US Patent 20,150,148,664


Refereed Papers 2014
NP Deshmukh, HJ Kang, SD Billings, RH Taylor, GD Hager and EM Boctor
Elastography Using Multi-Stream GPU: An Application to Online Tracked Ultrasound Elastography, In-Vivo and the da Vinci Surgical System
PloS one

KR Guerin, SD Riedel, J Bohren and GD Hager
Adjutant: A framework for flexible human-machine collaborative systems
Intelligent Robots and Systems (IROS)

H Rivaz, EM Boctor, MA Choti and GD Hager
Ultrasound elastography using multiple images
Medical Image Analysis

DJ Ramsey, JS Sunness, P Malviya, C Applegate, G Hager and JT Handa
Automated image alignment and segmentation to follow progression of geographic atrophy in age-related macular degeneration
Retina

R Richa, R Linhares, E Comunello, A von Wangenheim, JY Schnitzler, B Wassmer, C Guillemot, G Thuret, P Gain, G Hager and others
Fundus Image Mosaicking for Information Augmentation in Computer-Assisted Slit-Lamp Imaging
IEEE Transactions on Medical Imaging

A Malpani, SS Vedula, CCG Chen and GD Hager
Pairwise Comparison-Based Objective Score for Automated Skill Assessment of Segments in a Surgical Task
Information Processing in Computer-Assisted Interventions (IPCAI)

PJ Stolka, P Foroughi, M Rendina, CR Weiss, GD Hager and EM Boctor
Needle guidance using handheld stereo vision and projection for ultrasound-based interventions
Medical Image Computing and Computer-Assisted Intervention (MICCAI)


Workshop Papers 2014
C Paxton, J Bohren and GD Hager
Towards a Standard for Grounding Symbols for Robotic Task Ontologies
IROS Workshop on Standardized Knowledge Representation and Ontologies for Robotics and Automation

C Lea, G Hager and R Vidal
Using Vision to Improve Activity Recognition for Surgical Training Tasks
IROS Workshop on The Role of Human Sensorimotor Control in Surgical Robotics

A Malpani and GD Hager
Evaluating Surgical Training Task Segments: using the Crowd and the Machine
IROS Workshop on The Role of Human Sensorimotor Control in Surgical Robotics

 

Preprints 2014
P Poddar, N Ahmidi, SS Vedula, L Ishii, G Hager and M Ishii
Automated Objective Surgical Skill Assessment in the Operating Room Using Unstructured Tool Motion
arXiv preprint arXiv:1412.6163

X Xiang, M Dao, GD Hager and TD Tran
Hierarchical Sparse and Collaborative Low-Rank Representation for Emotion Recognition
arXiv preprint arXiv:1410.1606

W Gray Roncal, DM Kleissas, JT Vogelstein, P Manavalan, R Burns, RJ Vogelstein, CE Priebe, MA Chevillet and GD Hager
An Automated Images-to-Graphs Pipeline for High Resolution Connectomics
arXiv preprint arXiv:1411.6880

W Gray Roncal, V Kaynig-Fittkau, N Kasthuri, D Berger, JT Vogelstein, LR Fernandez, JW Lichtman, RJ Vogelstein, H Pfister and GD Hager
Volumetric exploitation of synaptic information using context localization and evaluation
arXiv preprint arXiv:1403.3724


Patents 2014
H Rivaz, GD Hager, EM Boctor and I Fleming
Method and system for processing ultrasound data
US Patent 8,824,762

P Stolka, P Foroughi, M Rendina, G Hager, E Boctor
Surgical needle for a surgical system with optical recognition
US Patent 8,880,151


Refereed Papers 2013
R Chaudhry, G Hager, and R Vidal
Dynamic template tracking and recognition
International Journal of Computer Vision (IJCV)

R Sznitman, R Richa, R Taylor, B Jedynak and G Hager
Unified detection and tracking of instruments during retinal microsurgery
Pattern Analysis and Machine Intelligence (PAMI)

P Foroughi, HJ Kang, DA Carnegie, MG van Vledder, MA Choti, GD Hager, and EM Boctor
A freehand ultrasound elastography system with tracking for in vivo applications
Ultrasound in Medicine & Biology

DJ Mirota, A Uneri, S Schafer, S Nithiananthan, DD Reh, M Ishii, GL Gallia, RH Taylor, GD Hager, and JH Siewerdsen
Evaluation of a system for high-accuracy 3D image-based registration of endoscopic video to c-arm cone-beam CT for image-guided skull base surgery
IEEE Transactions on Medical Imaging

BC Becker, R MacLachlan, LA Lobes, G Hager, CN Riviere and others
Vision-based control of a handheld surgical micromanipulator with virtual fixtures
IEEE Transactions on Robotics

J Bohren, C Papazov, D Burschka, K Krieger, S Parusel, S Haddadin, WL Shepherdson, G Hager and LL Whitcomb
A pilot study in vision-based augmented telemanipulation for remote assembly over high-latency networks
International Conference on Robotics and Automation (ICRA)

L Zappella, B Bejar, G Hager and R Vidal
Surgical gesture classification from video and kinematic data
Medical Image Analysis

EM Meisner, G Hager, SL Ishman, D Brown, DE Tunkel and M Ishii
Anatomical reconstructions of pediatric airways from endoscopic images: A pilot study of the accuracy of quantitative endoscopy
The Laryngoscope

C Guillemot, R Richa, E Comunello, A Von Wangenheim, JY Schnitzler, B Wassmer, G Hager, R Taylor, G Thuret and P Gain
Live retinal image mosaicking during fundus examination with a computer-assisted slit-lamp prototype
Acta Ophthalmologica

L Tao, L Zappella, G Hager, and R Vidal
Surgical gesture segmentation and recognition
Medical Image Computing and Computer-Assisted Intervention (MICCAI)

N Ahmidi, Y Gao, B Bejar, S Vedula, S Khudanpur, R Vidal, and GD Hager
String motif-based description of tool motion for detecting skill and gestures in robotic surgery
Medical Image Computing and Computer-Assisted Intervention (MICCAI)

T Bergen, T Wittenberg, C Munzenmayer, CCG Chen and GD Hager
A graph-based approach for local and global panorama imaging in cystoscopy
SPIE Medical Imaging

C Lea, J Facker, G Hager, R Taylor, S Saria
3d sensing algorithms towards building an intelligent intensive care unit
AMIA summits on translational science proceedings

Patents 2013
K Guerin and G Hager
Dockable Tool Framework for Interaction with Large Scale Wall Displays
US Patent App. 14/026,152

G Hager, M Ishii, EM Meisner, DJ Marota, HN Tokgozoglu
Imaging system and method for use of same to determine metric scale of imaged bodily anatomy
US Patent App. 13/895,813

H Rivaz, EM Boctor, G Fichtinger and G Hager
Robust and accurate freehand 3D ultrasound
US Patent 8,559,685


For older publications visit Greg Hager’s Google Scholar page.

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