Gurprit Singh

Welcome!

I am leading the sampling and rendering group in the computer graphics department at the Max Planck Institute for informatics in Saarbrücken, Germany. Before that, I spent two wonderful years at Dartmouth College working with Wojciech Jarosz followed by another two-year postdoc working with Karol Myszkowski. I obtained my PhD from Université Lyon 1 in France, under the supervision of Victor Ostromoukhov.

How To Do Research (Bill Freeman's notes)
Writing tips (Wojciech Jarosz)

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Best way to reach me.

Research

My research revolves around sampling which is the basic building block in many domains including computer graphics, computer vision and financial mathematics. I strive to understand how different sample correlations affect specific applications and I enjoy developing models to characterize these correlations using various mathematical tools. For example, sample distributions directly affect the error during Monte Carlo and Quasi-Monte Carlo (MCQMC) based numerical estimations of global illumination integrals. Similar numerical approximations are extremely important in quantitative analysis in financial math. On the vision side, the data obtained from scanners in the form of noisy point clouds needs constant improvement for fast and better detection, segmentation and reconstruction of underlying objects/material properties. Similar problems are also encountered in computational geometry for remeshing. In all, I am interested in various aspects of sample correlations/distributions. If you have a specific question or if you wonder why some distributions in nature are the way they are, feel free to send me an email.

Academic service

SIGGRAPH ASIA 2022: International program committee member for SIGGRAPH ASIA.
EGSR 2022: International program committee member for Eurographics symposium on rendering.
EGSR 2021: Conference co-chair with Pascal Grittmann and Philipp Slusallek (Saarland University).
EG 2020-21: International program committee member for Eurographics Short papers.
PG 2019-21: International program committee member for Pacific Graphics.
Reviewer: SIGGRAPH, TOG, Pacific Graphics, Eurographics (EG), EGSR, HELIYON (Elsevier).

Open positions

PhD positions

We are looking to hire PhD candidates in different areas related to sampling and rendering including (but not limited to):
1) Monte Carlo and Quasi-Monte Carlo (MCQMC) sampling for rendering algorithms and machine learning
2) characterization and synthesis of correlations for content creation in virtual worlds,
3) understanding of hidden structures/details in noisy point clouds.
4) Haptic rendering and volumetric fabrication Strong mathematical background is a must. Practical knowledge of machine learning is valuable. If you are interested, contact me with your CV attached.

Internship positions

We also have few internship positions available (6 months or more) in the above mentioned areas. Preference will be given to (Master level) students who would like to develop their ideas towards a PhD. Please contact me directly if you are interested.

Teaching

SS2022: Realistic Image Synthesis (MPI Saarbrücken, Summer Semester 2022)
SS2021: Realistic Image Synthesis (MPI Saarbrücken, Summer Semester 2021)
SS2020: Realistic Image Synthesis (MPI Saarbrücken, Summer Semester 2020)
SS2019: Realistic Image Synthesis (MPI Saarbrücken, Summer Semester 2019)
SS2018: Realistic Image Synthesis (MPI Saarbrücken, Summer Semester 2018)
CS294: Prior work on Digital Arts, Instructor (Dartmouth College, Fall 2016)
CS87/187: Rendering Algorithms, Guest Lecturer (Dartmouth College, Spring 2016, Instructor Prof. Wojciech Jarosz)
CS77/177: Computer Graphics, Guest Lecturer (Dartmouth College, Fall 2015, Instructor Prof. Emily Whiting)

PhD students

Corentin Salaün (Oct 2020 - present)
Xingchang Huang (Feb 2021 - present)

Alumni

Postdoc: Quan Zheng (Oct 2019 - Oct 2021) [Chinese Academy of Sciences]
MS thesis: Shishir Reddy (2021) [Siemens]
MS thesis: Varshini Muthukumar (2021)
MS thesis: Tianqi Fan (2020) [Google Munich]
MS thesis: Vassillen Chizhov (2019) [Saarland University]
MS thesis: Alexander Köhn ( 2019)
Intern: Pacome Luton (May - July 2022)
Intern: Benjamin Sommer (Oct 2020 - June 2021)
Intern: Xingchang Huang (June 2020 - Jan 2021)
Intern: Geremy Hutin (2019 Summer)
Intern: Arezou Fatemi (2018 Summer)

Publications

2022

Informatik Spectrum: Scalable Multi-class Sampling via Filtered Sliced Optimal Transport

Cover Image for Informatik Spectrum, October 2022
Gurprit Singh
summary
Journal

Scalable Multi-class Sampling via Filtered Sliced Optimal Transport

SIGGRAPH Asia 2022 / ACM Transactions on Graphics, Volume 41 issue 6, December 2022
Corentin Salaun, Iliyan Georgiev, Hans-Peter Seidel, Gurprit Singh
summary
webpage

Point-Pattern Synthesis using Gabor and Random Filters

EGSR 2022 / Computer Graphics Forum, Volume 41 issue 6, July 2022
Xingchang Huang, Pooran Memari, Hans-Peter Seidel, Gurprit Singh
summary
webpage

Regression-based Monte Carlo Integration

SIGGRAPH 2022 / ACM Transactions on Graphics, Volume 41 issue 4, July 2022
Corentin Salaun, Adrien Gruson, Binh-Son Hua, Toshiya Hachisuka, Gurprit Singh
summary
webpage

Perceptual Error Optimization for Monte Carlo Rendering

ACM Transactions on Graphics, Volume 41 issue 3, June 2022 (presented at SIGGRAPH 2022)
Vassillen Chizhov, Iliyan Georgiev, Karol Myszkowski, Gurprit Singh
summary
webpage

2021

Informatik Spectrum: Neural Light Field 3D Printing

Cover Image for Informatik Spectrum, October 2021
Quan Zheng, Vahid Babaei, Gordon Wetzstein, Hans-Peter Seidel, Matthias Zwicker, Gurprit Singh
summary
Magazine Journal

Neural Relightable Participating Media Rendering

NeurIPS 2021
Quan Zheng, Gurprit Singh, Hans-Peter Seidel
summary
arXiv

Blue Noise Plots

Eurographics 2021 / Computer Graphics Forum, Volume 40 issue 2, May 2021
Christian van Onzenoodt, Gurprit Singh, Timo Ropinski, Tobias Ritschel
summary
arXiv source code

2020

Neural Light Field 3D Printing

SIGGRAPH ASIA 2020 / ACM Transactions on Graphics, Volume 39 issue 6, December 2020
Quan Zheng, Vahid Babaei, Gordon Wetzstein, Hans-Peter Seidel, Matthias Zwicker, Gurprit Singh
summary
webpage

LadyBird: Quasi-Monte Carlo Sampling for Deep Implicit Field Based 3D Reconstruction with Symmetry

ECCV (Oral), August 2020
Yifan Xu*, Tianqi Fan*, Yi Yuan, Gurprit Singh (*contributed equally)
summary
webpage

Real-time Monte Carlo Denoising with the Neural Bilateral Grid

Eurographics Symposium on Rendering (EGSR), June 2020
Xiaoxu Meng, Quan Zheng, Amitabh Varshney, Gurprit Singh, Matthias Zwicker
summary
webpage

2019

Deep Point Correlation Design

SIGGRAPH ASIA 2019 / ACM Transactions on Graphics, Volume 38 issue 6, October 2019
Thomas Leimkühler, Gurprit Singh, Karol Myszkowski, Hans-Peter Seidel, Tobias Ritschel
summary
webpage

Analysis of Sample Correlations for Monte Carlo Rendering

Computer Graphics Forum (Proceedings of Eurographics - State of the art reports) 2019
Gurprit Singh, Cengiz Öztireli, Abdalla G.M. Ahmed, David Coeurjolly, Kartic Subr, Oliver Deussen, Victor Ostromoukhov, Ravi Ramamoorthi, Wojciech Jarosz
summary
webpage

Fourier Analysis of Correlated Monte Carlo Importance Sampling

Computer Graphics Forum, 38(1), 2019
Gurprit Singh, Kartic Subr, David Coeurjolly, Victor Ostromoukhov, Wojciech Jarosz
summary
webpage

A Perception-driven Hybrid Decomposition for Multi-layer Accommodative Displays

IEEE VR 2019
Hyeonseung Yu, Mojtaba Bemana, Marek Wernikowski, Michał Chwesiuk, Okan Tarhan Tursun, Gurprit Singh, Karol Myszkowski, Radosław Mantiuk, Hans-Peter Seidel, Piotr Didyk
summary
webpage

2018

Spectral Measures of Distortion for Change Detection in Dynamic Graphs

Complex Networks 2018 (Oral)
Luca Castelli Aleardi, Semih Salihoglu, Gurprit Singh, Maks Ovsjanikov
summary
webpage

Sampling Analysis using Correlations for Monte Carlo Rendering

SIGGRAPH Asia Courses 2018
Cengiz Öztireli, Gurprit Singh
summary
webpage

End-to-end Sampling Patterns

Thomas Leimkühler, Gurprit Singh, Karol Myszkowski, Hans-Peter Seidel, Tobias Ritschel
summary
Technical Report

2017

Convergence Analysis for Anisotropic Monte Carlo Sampling Spectra #

SIGGRAPH 2017 / ACM Transactions on Graphics, 36 (4), July 2017
Gurprit Singh, Wojciech Jarosz
summary
webpage

Variance and Convergence Analysis of Monte Carlo Line and Segment Samples #

Computer Graphics Forum (Proceedings of EGSR), 36 (4), June 2017
Gurprit Singh, Bailey Miller, Wojciech Jarosz
summary
webpage source code (AO example)

2016

Monte Carlo Convergence Analysis for Anisotropic Sampling Power Spectra

Gurprit Singh, Wojciech Jarosz
summary
Technical Report

Fourier Analysis of Numerical Integration in Monte Carlo Rendering: Theory and Practice #

SIGGRAPH Courses 2016
Kartic Subr, Gurprit Singh, Wojciech Jarosz
summary
webpage acm.org source code

2015

Variance and Sampling Analysis for Monte Carlo Integration in the Spherical Domain #

Ph.D. Dissertation, Université Lyon 1, France, September 2015.
Gurprit Singh
summary
HAL

Variance Analysis for Monte Carlo Integration #

SIGGRAPH 2015 / ACM Transactions on Graphics, 34 (4), 2015
*Adrien Pilleboue, *Gurprit Singh, David Coeurjolly, Michael Kazhdan, Victor Ostromoukhov (*joint first authors)
summary
webpage acm.org source code

Variance Analysis for Monte Carlo Integration: A Representation-Theoretic Perspective

Michael Kazhdan, Gurprit Singh, Adrien Pilleboue, David Coeurjolly, Victor Ostromoukhov
summary
arXiv Report

2014

Fast Tile-Based Adaptive Sampling with User-Specified Fourier Spectra #

SIGGRAPH 2014 / ACM Transactions on Graphics, 33 (4), 2014
Florent Wachtel, Adrien Pilleboue, David Coeurjolly, Katherine Breeden, Gurprit Singh, Gaël Cathelin, Fernando de Goes, Mathieu Desbrun, Victor Ostromoukhov
summary
webpage acm.org

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