Derek Nowrouzezahrai

Mila > About Mila > Team > Derek Nowrouzezahrai
Core Academic Member
Derek Nowrouzezahrai
Professor, McGill University
Derek Nowrouzezahrai
Derek is an Associate Professor at McGill University, Director of McGill’s Centre for Intelligent Machines (CIM), the co-Director of McGill’s Graphics Lab (MGL), and the NSERC/Ubisoft Industrial Research Chair in Believable Virtual Character Experiences.

Derek’s research tackles the simulation of various physical phenomena — such as the dynamics of moving objects and the simulation of lighting for realistic image synthesis — with applications in virtual reality, video games, fluid simulation and control, digital manufacturing, computationally-augmented optics, and geometry processing. Moreover, Derek is interested in the development of differentiable simulators of these dynamical systems and their applications to inverse problems in robotics and vision.

Derek’s work relies fundamentally on

  • developing high performance and sample efficient (Markov Chain) Monte Carlo-based methods,
  • high-order statistics and computational methods for complex multi-dimensional integration problems,
  • differentiable physics-based simulators and numerical methods for dynamical systems, and
  • applying machine learning to 3D, visual and interactive media.

Publications

2021-08

SSR: Semi-supervised Soft Rasterizer for single-view 2D to 3D Reconstruction
Issam Laradji, Pau Rodríguez, David Vazquez and Derek Nowrouzezahrai
arXiv: Computer Vision and Pattern Recognition
(2021-08-21)
export.arxiv.orgPDF
Dynamic Diffuse Global Illumination Resampling.
Zander Majercik, Thomas Müller, Alexander Keller, Derek Nowrouzezahrai and Morgan McGuire
arXiv preprint arXiv:2108.05263
(2021-08-11)
jp.arxiv.orgPDF

2021-07

Dynamic Diffuse Global Illumination Resampling
Zander Majercik, Thomas Mueller, Alexander Keller, Derek Nowrouzezahrai and Morgan McGuire
SIGGRAPH 2021
(2021-07-31)
PDF

2021-06

Differentiable Compound Optics and Processing Pipeline Optimization for End-to-end Camera Design
Ethan Tseng, Ali Mosleh, Fahim Mannan, Karl St-Arnaud, Avinash Sharma, Yifan Peng, Alexander Braun, Derek Nowrouzezahrai, Jean-François Lalonde and Felix Heide
ACM Transactions on Graphics
(2021-06-21)
dl.acm.org

2021-05

Visual Question Answering From Another Perspective: CLEVR Mental Rotation Tests
Christopher Beckham, Martin Weiss, Florian Golemo, Sina Honari, Derek Nowrouzezahrai and Christopher Pal
(venue unknown)
(2021-05-04)
openreview.netPDF
On the Effectiveness of Weight-Encoded Neural Implicit 3D Shapes
Thomas Ryan Davies, Derek Nowrouzezahrai and Alec Jacobson
arxiv:cs.GR
(2021-05-04)
openreview.netPDF
gradSim: Differentiable simulation for system identification and visuomotor control
J. Krishna Murthy, Miles Macklin, Florian Golemo, Vikram Voleti, Linda Petrini, Martin Weiss, Breandan Considine, Jérôme Parent-Lévesque, Kevin Xie, Kenny Erleben, Liam Paull, Florian Shkurti, Derek Nowrouzezahrai and Sanja Fidler
ICLR 2021
(2021-05-03)
dblp.uni-trier.dePDF
Regularized Inverse Reinforcement Learning
Wonseok Jeon, Chen-Yang Su, Paul Barde, Thang Doan, Derek Nowrouzezahrai and Joelle Pineau

2021-04

gradSim: Differentiable simulation for system identification and visuomotor control
Krishna Murthy Jatavallabhula, Miles Macklin, Florian Golemo, Vikram Voleti, Linda Petrini, Martin Weiss, Breandan Considine, Jerome Parent-Levesque, Kevin Xie, Kenny Erleben, Liam Paull, Florian Shkurti, Derek Nowrouzezahrai and Sanja Fidler
arXiv preprint arXiv:2104.02646
(2021-04-06)
ui.adsabs.harvard.eduPDF

2021-03

Countering Racial Bias in Computer Graphics Research.
Theodore Kim, Holly E. Rushmeier, Julie Dorsey, Derek Nowrouzezahrai, Raqi Syed, Wojciech Jarosz and A. M. Darke
arXiv preprint arXiv:2103.15163
(2021-03-28)
ui.adsabs.harvard.eduPDF

2021-01

Neural Geometric Level of Detail: Real-time Rendering with Implicit 3D Shapes
Towaki Takikawa, Joey Litalien, Kangxue Yin, Karsten Kreis, Charles Loop, Derek Nowrouzezahrai, Alec Jacobson, Morgan McGuire and Sanja Fidler
Practical Product Sampling for Single Scattering in Media.
Keven Villeneuve, Adrien Gruson, Iliyan Georgiev and Derek Nowrouzezahrai
EGSR (DL)
(2021-01-01)
dblp.uni-trier.de
A Weakly Supervised Consistency-based Learning Method for COVID-19 Segmentation in CT Images
Issam Laradji, Pau Rodriguez, Oscar Manas, Keegan Lensink, Marco Law, Lironne Kurzman, William Parker, David Vazquez and Derek Nowrouzezahrai

2020-11

Affinity LCFCN: Learning to Segment Fish with Weak Supervision.
Issam H. Laradji, Alzayat Saleh, Pau Rodríguez, Derek Nowrouzezahrai, Mostafa Rahimi Azghadi and David Vázquez
arXiv preprint arXiv:2011.03149
(2020-11-06)
dblp.uni-trier.dePDF
Pix2Shape: Towards Unsupervised Learning of 3D Scenes from Images Using a View-Based Representation
Sai Rajeswar, Fahim Mannan, Florian Golemo, Jérôme Parent-Lévesque, David Vázquez, Derek Nowrouzezahrai and Aaron C. Courville
International Journal of Computer Vision
(2020-11-01)
link.springer.com[Also on arXiv preprint arXiv:2003.14166 (2020-03-23)]

2020-09

Overfit Neural Networks as a Compact Shape Representation.
Thomas Davies, Derek Nowrouzezahrai and Alec Jacobson
arXiv preprint arXiv:2009.09808
(2020-09-17)
ui.adsabs.harvard.edu

2020-07

Robust motion in-betweening
Félix G. Harvey, Mike Yurick, Derek Nowrouzezahrai and Christopher Pal
Directional sources and listeners in interactive sound propagation using reciprocal wave field coding
Chakravarty R. Alla Chaitanya, Nikunj Raghuvanshi, Keith W. Godin, Zechen Zhang, Derek Nowrouzezahrai and John M. Snyder
SIGGRAPH 2020
(2020-07-08)
dl.acm.org
A Weakly Supervised Region-Based Active Learning Method for COVID-19 Segmentation in CT Images.
Issam H. Laradji, Pau Rodríguez, Frederic Branchaud-Charron, Keegan Lensink, Parmida Atighehchian, William Parker, David Vázquez and Derek Nowrouzezahrai
arXiv preprint arXiv:2007.07012
(2020-07-07)
ui.adsabs.harvard.eduPDF
Practical Product Path Guiding Using Linearly Transformed Cosines
Stavros Diolatzis, Adrien Gruson, Wenzel Jakob, Derek Nowrouzezahrai and George Drettakis
Computer Graphics Forum
(2020-07-01)
diglib.eg.org

2020-06

Adversarial Soft Advantage Fitting: Imitation Learning without Policy Optimization
Paul Barde, Julien Roy, Wonseok Jeon, Joelle Pineau, Christopher J. Pal and Derek Nowrouzezahrai
Surprisal-Triggered Conditional Computation with Neural Networks
Loren Lugosch, Derek Nowrouzezahrai and Brett H. Meyer
arXiv preprint arXiv:2006.01659
(2020-06-02)
ui.adsabs.harvard.eduPDF
VoronoiNet: General Functional Approximators With Local Support
Francis Williams, Jerome Parent-Levesque, Derek Nowrouzezahrai, Daniele Panozzo, Kwang Moo Yi and Andrea Tagliasacchi
CVPR 2020
(2020-06-01)
nyuscholars.nyu.eduPDF

2020-05

Delayed Rejection Metropolis Light Transport
Damien Rioux-Lavoie, Joey Litalien, Adrien Gruson, Toshiya Hachisuka and Derek Nowrouzezahrai
ACM Transactions on Graphics
(2020-05-10)
dl.acm.org
Using Speech Synthesis to Train End-To-End Spoken Language Understanding Models
Loren Lugosch, Brett H. Meyer, Derek Nowrouzezahrai and Mirco Ravanelli
An Efficient Transport Estimator for Complex Layered Materials
Luis E. Gamboa, Adrien Gruson and Derek Nowrouzezahrai
Computer Graphics Forum
(2020-05-01)
diglib.eg.org
Local Bases for Model‐reduced Smoke Simulations
Olivier Mercier and Derek Nowrouzezahrai
Computer Graphics Forum
(2020-05-01)
onlinelibrary.wiley.com

2020-02

Scalable Multi-Agent Inverse Reinforcement Learning via Actor-Attention-Critic
Wonseok Jeon, Paul Barde, Derek Nowrouzezahrai and Joelle Pineau
arXiv preprint arXiv:2002.10525
(2020-02-24)
ui.adsabs.harvard.eduPDF

2019-11

Robo-PlaNet: Learning to Poke in a Day
Maxime Chevalier-Boisvert, Guillaume Alain, Florian Golemo and Derek Nowrouzezahrai
arXiv preprint arXiv:1911.03594
(2019-11-09)
ui.adsabs.harvard.eduPDF
Integral formulations of volumetric transmittance
Iliyan Georgiev, Zackary Misso, Toshiya Hachisuka, Derek Nowrouzezahrai, Jaroslav Křivánek and Wojciech Jarosz
ACM Transactions on Graphics
(2019-11-08)
dl.acm.org
Non-linear sphere tracing for rendering deformed signed distance fields
Dario Seyb, Alec Jacobson, Derek Nowrouzezahrai and Wojciech Jarosz
ACM Transactions on Graphics
(2019-11-08)
dl.acm.org

2019-10

Navigation Agents for the Visually Impaired: A Sidewalk Simulator and Experiments
Martin Weiss, Simon Chamorro, Roger Girgis, Margaux Luck, Samira Ebrahimi Kahou, Joseph Paul Cohen, Derek Nowrouzezahrai, Doina Precup, Florian Golemo and Chris Pal

2019-09

Promoting Coordination through Policy Regularization in Multi-Agent Deep Reinforcement Learning
Julien Roy, Paul Barde, Félix G. Harvey, Derek Nowrouzezahrai and Christopher Pal

2019-07

Subspace neural physics: fast data-driven interactive simulation
Daniel Holden, Bang Chi Duong, Sayantan Datta and Derek Nowrouzezahrai
SCA 2019
(2019-07-26)
dl.acm.org
Hyperparameter optimization in black-box image processing using differentiable proxies
Ethan Tseng, Felix Yu, Yuting Yang, Fahim Mannan, Karl St. Arnaud, Derek Nowrouzezahrai, Jean-François Lalonde and Felix Heide
ACM Transactions on Graphics
(2019-07-12)
collaborate.princeton.edu
Scalable Virtual Ray Lights Rendering for Participating Media
Nicolas Vibert, Adrien Gruson, Heine Stokholm, Troels Mortensen, Wojciech Jarosz, Toshiya Hachisuka and Derek Nowrouzezahrai
Computer Graphics Forum
(2019-07-01)
diglib.cgv.tugraz.at

2019-06

Volume Path Guiding Based on Zero-Variance Random Walk Theory
Sebastian Herholz, Yangyang Zhao, Oskar Elek, Derek Nowrouzezahrai, Hendrik P. A. Lensch and Jaroslav Křivánek
ACM Transactions on Graphics
(2019-06-05)
dl.acm.org
View-dependent Radiance Caching
Yangyang Zhao, Laurent Belcour and Derek Nowrouzezahrai
GI 2019
(2019-06-03)
dl.acm.org
A Frequency Analysis and Dual Hierarchy for Efficient Rendering of Subsurface Scattering
David Milaenen, Laurent Belcour, Jean-Philippe Guertin, Toshiya Hachisuka and Derek Nowrouzezahrai
GI 2019
(2019-06-03)
dl.acm.org

2019-05

Fast non-uniform radiance probe placement and tracing
Yue Wang, Soufiane Khiat, Paul G. Kry and Derek Nowrouzezahrai
I3D 2019
(2019-05-21)
dl.acm.org
Beyond Pixel Norm-Balls: Parametric Adversaries using an Analytically Differentiable Renderer
Hsueh-Ti Derek Liu, Michael Tao, Chun-Liang Li, Derek Nowrouzezahrai and Alec Jacobson
ICLR 2019
(2019-05-06)
iclr.cc
A Survey on Gradient-Domain Rendering
Binh-Son Hua, Adrien Gruson, Victor Petitjean, Matthias Zwicker, Derek Nowrouzezahrai, Elmar Eisemann and Toshiya Hachisuka
Computer Graphics Forum
(2019-05-01)
diglib.eg.org

2019-02

Adaptive Sampling for Sound Propagation
Chakravarty R. Alla Chaitanya, John M. Snyder, Keith Godin, Derek Nowrouzezahrai and Nikunj Raghuvanshi
IEEE Transactions on Visualization and Computer Graphics
(2019-02-14)
ieeexplore.ieee.orgPDF

2019-01

Impulse Responses for Precomputing Light from Volumetric Media
Adrien Dubouchet, Peter-Pike Sloan, Wojciech Jarosz and Derek Nowrouzezahrai
EGSR (DL/I)
(2019-01-01)
diglib.eg.org

2018-12

Scalable appearance filtering for complex lighting effects
Luis E. Gamboa, Jean-Philippe Guertin and Derek Nowrouzezahrai
ACM Transactions on Graphics
(2018-12-04)
dl.acm.org

2018-09

Pix2Scene: Learning Implicit 3D Representations from Images
Sai Rajeswar, Fahim Mannan, Florian Golemo, David Vazquez, Derek Nowrouzezahrai and Aaron Courville
(venue unknown)
(2018-09-27)
openreview.net

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