Perceptual error optimization for Monte Carlo animation rendering

Date: 2023.11

Authors: Miša Korać, Corentin Salaün, Iliyan Georgiev, Pascal Grittmann, Philipp Slusallek, Karol Myszkowski, Gurprit Singh

Conference or journal: SIGGRAPH Asia 2023 Date : 2023.11 Miša Korać, Corentin Salaün, Iliyan Georgiev, Pascal Grittmann, Philipp Slusallek, Karol Myszkowski, Gurprit SinghIndependently estimating pixel values in Monte Carlo rendering results in a perceptually sub-optimal white-noise distribution of error in …

Neural Prefiltering for Correlation-Aware Levels of Detail

Date: 2023.07

Authors: Philippe Weier, Tobias Zirr, Anton Kaplanyan, Ling-Qi Yan, Philipp Slusallek

Conference or journal: SIGGRAPH 2023 Date : 2023.07 Philippe Weier, Tobias Zirr, Anton Kaplanyan, Ling-Qi Yan, Philipp SlusallekWe introduce a practical general-purpose neural appearance filtering pipeline for physically-based rendering. We tackle the previously difficult challenge of aggregating visibility across many …

Denoising-Aware Adaptive Sampling for Monte Carlo Ray Tracing

Date: 2023.07

Authors: Arthur Firmino, Jeppe Revall Frisvad, Henrik Wann Jensen

Conference or journal: SIGGRAPH 2023 Date : 2023.07 Arthur Firmino, Jeppe Revall Frisvad, Henrik Wann JensenMonte Carlo rendering is a computationally intensive task, but combined with recent deep-learning based advances in image denoising it is possible to achieve high quality …

Affordable method for measuring fluorescence using Gaussian distributions and bounded MESE

Date: 2023.07

Authors: Tomáš Iser, Loïc Lachiver, and Alexander Wilkie

Conference or journal: Optics Express Date : 2023.07 Tomáš Iser, Loïc Lachiver, and Alexander WilkieWe present an accurate and low-cost method for measuring fluorescence in materials. Our method outputs an estimate of the material’s Donaldson matrix, which is a commonly …

The Visual Language of Fabrics

Date: 2023.07

Authors: Valentin Deschaintre*, Julia Guerrero-Viu*, Diego Gutierrez, Tamy Boubekeur, Belen Masia

Conference or journal: Siggraph 2023 Date : 2023.07 Valentin Deschaintre*, Julia Guerrero-Viu*, Diego Gutierrez, Tamy Boubekeur, Belen MasiaWe introduce text2fabric, a novel dataset that links free-text descriptions to various fabric materials. The dataset comprises 15,000 natural language descriptions associated to …

SparseBTF: Sparse Representation Learning for Bidirectional Texture Functions

Date: 2023.06

Authors: Kavoosighafi, Behnaz and Frisvad, Jeppe Revall and Hajisharif, Saghi and Unger, Jonas and Miandji, Ehsan

Conference or journal: Eurographics Symposium on Rendering Date : 2023.06 Kavoosighafi, Behnaz and Frisvad, Jeppe Revall and Hajisharif, Saghi and Unger, Jonas and Miandji, EhsanWe propose a novel dictionary-based representation learning model for Bidirectional Texture Functions (BTFs) aiming at compact …

Practical Temporal and Stereoscopic Filtering for Real-time Ray Tracing

Date: 2023.06

Authors: Henrik Philippi, Jeppe Revall Frisvad, Henrik Wann Jensen

Conference or journal: Eurographics Symposium on Rendering (2023) Date : 2023.06 Henrik Philippi, Jeppe Revall Frisvad, Henrik Wann JensenWe present a practical method for temporal and stereoscopic filtering that generates stereo-consistent rendering. Existing methods for stereoscopic rendering often reuse samples …

Rendering Glinty Granular Materials in Virtual Reality

Date: 2022.12

Authors: Nynne Kajs, Mikkel Gjøl, Jakob Gath, Henrik Philippi, Jeppe Revall Frisvad, Andreas Bærentzen

Conference or journal: ICAT-EGVE 2022 Date : 2022.12 Nynne Kajs, Mikkel Gjøl, Jakob Gath, Henrik Philippi, Jeppe Revall Frisvad, Andreas BærentzenHighly realistic rendering of grainy materials like sand is achievable given significant computational resources and a lot of time for …

Efficient Storage and Importance Sampling for Fluorescent Reflectance

Date: 2022.11

Authors: Q. Hua, V. Tázlar, A. Fichet, A. Wilkie.

Conference or journal: Computer Graphics Forum Vol 42 (2023) Date : 2022.11 Q. Hua, V. Tázlar, A. Fichet, A. Wilkie.We propose a technique for efficient storage and importance sampling of fluorescent spectral data. Fluorescence is fully described by a re-radiation …

On the Influence of Dynamic Illumination in the Perception of Translucency

Date: 2022.09

Dario Lanza, Adrian Jarabo, Belen Masia ACM Symposium on Applied Perception 2022 Abstract Translucent materials are ubiquitous in the real world, from organic materials such as food or human skin, to synthetic materials like plastic or rubber. While multiple models …

3inGAN: Learning a 3D Generative Model from Images of a Self-similar Scene

Date: 2022.09

Animesh Karnewar, Oliver Wang, Tobias Ritschel, Niloy J. Mitra 3DV 2022 Abstract We introduce 3inGAN, an unconditional 3D generative model trained from 2D images of a single self-similar 3D scene. Such a model can be used to produce 3D “remixes” …

EARS: Efficiency-Aware Russian Roulette and Splitting

Date: 2022.07

Authors: Rath, Alexander and Grittmann, Pascal and Herholz, Sebastian and Weier, Philippe and Slusallek, Philipp

Conference or journal: Siggraph 2022 Date : 2022.07 Rath, Alexander and Grittmann, Pascal and Herholz, Sebastian and Weier, Philippe and Slusallek, PhilippRussian roulette and splitting are widely used techniques to increase the efficiency of Monte Carlo estimators. But, despite their …

Polarization-imaging Surface Reflectometry using Near-field Display

Date: 2022.07

Emilie Nogué, Yiming Lin, Abhijeet Ghosh July 2022 Eurographics Symposium on Rendering (EGSR) Abstract We present a practical method for measurement of spatially varying isotropic surface reflectance of planar samples using a combination of single-view polarization imaging and near-field display …

Efficiency-aware multiple importance sampling for bidirectional rendering algorithms

Date: 2022.07

Authors: Grittmann, Pascal and Yazici, Ömercan and Georgiev, Iliyan and Slusallek, Philipp

Conference or journal: Siggraph 2022 Date : 2022.07 Grittmann, Pascal and Yazici, Ömercan and Georgiev, Iliyan and Slusallek, PhilippMultiple importance sampling (MIS) is an indispensable tool in light-transport simulation. It enables robust Monte Carlo integration by combining samples from several …

Affordable Spectral Measurements of Translucent Materials

Date: 2022.07

Tomáš Iser, Tobias Rittig, Emilie Nogué, Thomas Nindel, Alexander Wilkie Eurographics Symposium on Rendering (EGSR) Abstract We present a spectral measurement approach for the bulk optical properties of translucent materials using only low-cost components. We focus on the translucent inks …

ReLU Fields: The Little Non-linearity That Could

Date: 2022.07

Animesh Karnewar, Tobias Ritschel, Oliver Wang, Niloy J. Mitra Siggraph 2022 Abstract In many recent works, multi-layer perceptions (MLPs) have been shown to be suitable for modeling complex spatially-varying functions including images and 3D scenes. Although the MLPs are able …

Wide Gamut Moment-based Constrained Spectral Uplifting

Date: 2022.07

Authors: Lucia Tódová, A. Wilkie, L. Fascione.

Conference or journal: Computer Graphics Forum Vol 41(2022) Date : 2022.07 Lucia Tódová, A. Wilkie, L. Fascione.Spectral rendering is increasingly used in appearance-critical rendering workflows due to its ability to predict colour values under varying illuminants. However, directly modelling assets …

Progressive Denoising of Monte Carlo Rendered Images

Date: 2022.05

Arthur Firmino, Jeppe Revall Frisvad, Henrik Wann Jensen Computer Graphics Forum Abstract Image denoising based on deep learning has become a powerful tool to accelerate Monte Carlo rendering. Deep learning techniques can produce smooth images using a low sample count. …

Differentiable Transient Rendering

Date: 2021.12

Authors: Shinyoung Yi, Donggun Kim, Kiseok Choi, Adrian Jarabo, Diego Gutierrez, Min H. Kim

Conference or journal: Siggraph Asia 2021 Date : 2021.12 Shinyoung Yi, Donggun Kim, Kiseok Choi, Adrian Jarabo, Diego Gutierrez, Min H. KimOur general-purpose differentiable transient rendering framework allows to compute derivates of complex, multi-bounce transient sequences with respect to scene …

A Fitted Radiance and Attenuation Model for Realistic Atmospheres

Date: 2021.08

Alexander Wilkie, Petr Vévoda, Lukáš Hošek, Thomas Bashford-Rogers, Tomáš Iser, Monika Kolářová, Tobias Rittig, Jaroslav Křivánek August 2021 Proceedings of SIGGRAPH • ACM Transactions on Graphics Abstract We present a fitted model of sky dome radiance and attenuation for realistic …

An OpenEXR Layout for Spectral Images

Date: 2021.07

Alban Fichet, Romain Pacanowski, Alexander Wilkie July 2021 Journal of Computer Graphics Techniques (JCGT) Abstract We propose a standardised layout to organise spectral data stored in OpenEXR images. We motivate why we chose the OpenEXR format as basis for our …

Moment-based Constrained Spectral Uplifting

Date: 2021.06

Lucia Tódová, Alexander Wilkie, Luca Fascione June 2021 Eurographics Symposium on Rendering (EGSR) Abstract We propose a technique to efficiently importance sample and store fluorescent spectral data. Fluorescence behaviour is properly represented as a re-radiation matrix: for a given input …

A Compact Representation for Fluorescent Spectral Data

Date: 2021.06

Qingqin Hua, Alban Fichet, Alexander Wilkie June 2021 Eurographics Symposium on Rendering (EGSR) Abstract We propose a technique to efficiently importance sample and store fluorescent spectral data. Fluorescence behaviour is properly represented as a re-radiation matrix: for a given input …

Perception of material appearance: a comparison between painted and rendered images

Date: 2021.05

Authors: Johanna Delanoy, Ana Serrano, Belen Masia, Diego Gutierrez

Conference or journal: Journal of Vision (JoV), 2021, Vol.21(5) Date : 2021.05 Johanna Delanoy, Ana Serrano, Belen Masia, Diego GutierrezPainters are masters in replicating the visual appearance of materials. While the perception of material appearance is not yet fully understood, …

The joint role of geometry and illumination on material recognition

Date: 2021.02

Authors: Manuel Lagunas, Ana Serrano, Diego Gutierrez, Belen Masia

Conference or journal: Journal of Vision Date : 2021.02 Manuel Lagunas, Ana Serrano, Diego Gutierrez, Belen MasiaObserving and recognizing materials is a fundamental part of our daily life. Under typical viewing conditions, we are capable of effortlessly identifying the objects …

Beyond Mie Theory: Systematic Computation of Bulk Scattering Parameters based on Microphysical Wave Optics

Authors: Yu Guo, Adrian Jarabo, and Shuang Zhao

Conference or journal: ACM Transactions on Graphics (SIGGRAPH Asia 2021), 40(6), 2021 Yu Guo, Adrian Jarabo, and Shuang Zhao Light scattering in participating media and translucent materials is typically modeled using the radiative transfer theory. Under the assumption of independent …