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Importance Sampling BRDF Derivatives
We propose a set of techniques to efficiently importance sample the derivatives of a wide range of Bidirectional Reflectance Distribution Function (BRDF) models. In differentiable rendering, BRDFs are replaced by their differential BRDF counterparts, ...
Online Neural Path Guiding with Normalized Anisotropic Spherical Gaussians
Importance sampling techniques significantly reduce variance in physically based rendering. In this article, we propose a novel online framework to learn the spatial-varying distribution of the full product of the rendering equation, with a single small ...
HQ3DAvatar: High-quality Implicit 3D Head Avatar
- Kartik Teotia,
- Mallikarjun B R,
- Xingang Pan,
- Hyeongwoo Kim,
- Pablo Garrido,
- Mohamed Elgharib,
- Christian Theobalt
Multi-view volumetric rendering techniques have recently shown great potential in modeling and synthesizing high-quality head avatars. A common approach to capture full head dynamic performances is to track the underlying geometry using a mesh-based ...
A Dual-Particle Approach for Incompressible SPH Fluids
Tensile instability is one of the major obstacles to particle methods in fluid simulation, which would cause particles to clump in pairs under tension and prevent fluid simulation to generate small-scale thin features. To address this issue, previous ...
Joint Stroke Tracing and Correspondence for 2D Animation
To alleviate human labor in redrawing keyframes with ordered vector strokes for automatic inbetweening, we for the first time propose a joint stroke tracing and correspondence approach. Given consecutive raster keyframes along with a single vector image ...
DMHomo: Learning Homography with Diffusion Models
Supervised homography estimation methods face a challenge due to the lack of adequate labeled training data. To address this issue, we propose DMHomo, a diffusion model-based framework for supervised homography learning. This framework generates image ...
Differentiable solver for time-dependent deformation problems with contact
- Zizhou Huang,
- Davi Colli Tozoni,
- Arvi Gjoka,
- Zachary Ferguson,
- Teseo Schneider,
- Daniele Panozzo,
- Denis Zorin
We introduce a general differentiable solver for time-dependent deformation problems with contact and friction. Our approach uses a finite element discretization with a high-order time integrator coupled with the recently proposed incremental potential ...
Evaluating Gesture Generation in a Large-scale Open Challenge: The GENEA Challenge 2022
- Taras Kucherenko*,
- Pieter Wolfert*,
- Youngwoo Yoon*,
- Carla Viegas,
- Teodor Nikolov,
- Mihail Tsakov,
- Gustav Eje Henter
This article reports on the second GENEA Challenge to benchmark data-driven automatic co-speech gesture generation. Participating teams used the same speech and motion dataset to build gesture-generation systems. Motion generated by all these systems was ...
Real-time Neural Appearance Models
- Tizian Zeltner*,
- Fabrice Rousselle*,
- Andrea Weidlich*,
- Petrik Clarberg*,
- Jan Novák*,
- Benedikt Bitterli*,
- Alex Evans,
- Tomáš Davidovič,
- Simon Kallweit,
- Aaron Lefohn
We present a complete system for real-time rendering of scenes with complex appearance previously reserved for offline use. This is achieved with a combination of algorithmic and system level innovations.
Our appearance model utilizes learned hierarchical ...
ConceptLab: Creative Concept Generation using VLM-Guided Diffusion Prior Constraints
Recent text-to-image generative models have enabled us to transform our words into vibrant, captivating imagery. The surge of personalization techniques that has followed has also allowed us to imagine unique concepts in new scenes. However, an intriguing ...
View-Independent Adjoint Light Tracing for Lighting Design Optimization
Differentiable rendering methods promise the ability to optimize various parameters of three-dimensional (3D) scenes to achieve a desired result. However, lighting design has so far received little attention in this field. In this article, we introduce a ...