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10.1145/3731161
Stochastic Preconditioning for Neural Field Optimization
https://doi.org/10.1145/3731161
[ "Selena Ling", "Merlin Nimier-David", "Alec Jacobson", "Nicholas Sharp" ]
Neural fields are a highly effective representation across visual computing. This work observes that fitting these fields is greatly improved by incorporating spatial stochasticity during training, and that this simple technique can replace or even outperform custom-designed hierarchies and frequency-space construction...
journal
10.1145/3731161
official
2505.20473
title_snapshot
10.1145/3731165
Interspatial Attention for Efficient 4D Human Video Generation
https://doi.org/10.1145/3731165
[ "Ruizhi Shao", "Yinghao Xu", "Yujun Shen", "Ceyuan Yang", "Yang Zheng", "Changan Chen", "Yebin Liu", "Gordon Wetzstein" ]
Generating photorealistic videos of digital humans in a controllable manner is crucial for a plethora of applications. Existing approaches either build on methods that employ template-based 3D representations or emerging video generation models but suffer from poor quality or limited consistency and identity preservati...
journal
10.1145/3731165
official
2505.15800
title_snapshot
10.1145/3731209
MoVer: Motion Verification for Motion Graphics Animations
https://doi.org/10.1145/3731209
[ "Jiaju Ma", "Maneesh Agrawala" ]
While large vision-language models can generate motion graphics animations from text prompts, they regularly fail to include all spatio-temporal properties described in the prompt. We introduce MoVer, a motion verification DSL based on first-order logic that can check spatio-temporal properties of a motion graphics ani...
journal
10.1145/3731209
official
2502.13372
title_snapshot
10.1145/3731167
Sketch2Anim: Towards Transferring Sketch Storyboards into 3D Animation
https://doi.org/10.1145/3731167
[ "Lei Zhong", "Chuan Guo", "Yiming Xie", "Jiawei Wang", "Changjian Li" ]
Storyboarding is widely used for creating 3D animations. Animators use the 2D sketches in storyboards as references to craft the desired 3D animations through a trial-and-error process. The traditional approach requires exceptional expertise and is both labor-intensive and time-consuming. Consequently, there is a high ...
journal
10.1145/3731167
official
2504.19189
title_snapshot
10.1145/3731187
Inverse Geometric Locomotion
https://doi.org/10.1145/3731187
[ "Quentin Becker", "Oliver Gross", "Mark Pauly" ]
Numerous tasks in robotics and character animation involve solving combinations of inverse kinematics and motion planning problems that require the precise design of pose sequences to achieve desired motion objectives. Accounting for the complex interplay between body deformations and resulting motion, especially throu...
journal
10.1145/3731187
official
null
null
10.1145/3730851
TetWeave: Isosurface Extraction using On-The-Fly Delaunay Tetrahedral Grids for Gradient-Based Mesh Optimization
https://doi.org/10.1145/3730851
[ "Alexandre Binninger", "Ruben Wiersma", "Philipp Herholz", "Olga Sorkine-Hornung" ]
We introduce TetWeave, a novel isosurface representation for gradient-based mesh optimization that jointly optimizes the placement of a tetrahedral grid used for Marching Tetrahedra and a novel directional signed distance at each point. TetWeave constructs tetrahedral grids on-the-fly via Delaunay triangulation, enabli...
journal
10.1145/3730851
official
2505.04590
title_snapshot
10.1145/3731146
Quadric-Based Silhouette Sampling for Differentiable Rendering
https://doi.org/10.1145/3731146
[ "Mariia Soroka", "Christoph Peters", "Steve Marschner" ]
Physically based differentiable rendering has established itself as key to inverse rendering, in which scenes are recovered from images through gradient-based optimization. Taking the derivative of the rendering equation is made difficult by the presence of discontinuities in the integrand at object silhouettes. To obt...
journal
10.1145/3731146
official
null
null
10.1145/3731422
Meschers: Geometry Processing of Impossible Objects
https://doi.org/10.1145/3731422
[ "Ana Dodik", "Isabella Yu", "Kartik Chandra", "Jonathan Ragan-Kelley", "Joshua Tenenbaum", "Vincent Sitzmann", "Justin Solomon" ]
Impossible objects, geometric constructions that humans can perceive but that cannot exist in real life, have been a topic of intrigue in visual arts, perception, and graphics, yet no satisfying computer representation of such objects exists. Previous work embeds impossible objects in 3D, cutting them or twisting/bendi...
journal
10.1145/3731422
official
2605.14960
title_snapshot
10.1145/3730847
Segment-based Light Transport Simulation
https://doi.org/10.1145/3730847
[ "Wenyou Wang", "Rex West", "Toshiya Hachisuka" ]
We propose a novel segment-based light transport framework that uses segments as the basic unit of light transport. Unlike vertex-based formulations, our segment-based formulation naturally accommodates the disconnected subpaths encountered in photon density estimation and path filtering methods, and opens the door to ...
journal
10.1145/3730847
official
null
null
10.1145/3731202
Progressive Dynamics++: A Framework for Stable, Continuous, and Consistent Animation Across Resolution and Time
https://doi.org/10.1145/3731202
[ "Jiayi Eris Zhang", "Doug L. James", "Danny M. Kaufman" ]
The recently developed Progressive Dynamics framework [Zhang et al. 2024] addresses the long-standing challenge in enabling rapid iterative design for high-fidelity cloth and shell animation. In this work, we identify fundamental limitations of the original method in terms of stability and temporal continuity. For robu...
journal
10.1145/3731202
official
null
null
10.1145/3731142
Geometric Contact Potential
https://doi.org/10.1145/3731142
[ "Zizhou Huang", "Maxwell Paik", "Zachary Ferguson", "Daniele Panozzo", "Denis Zorin" ]
Barrier potentials gained popularity as a means for robust contact handling in physical modeling and for modeling self-avoiding shapes. The key to the success of these approaches is adherence to geometric constraints, i.e., avoiding intersections, which are the cause of most robustness problems in complex deformation s...
journal
10.1145/3731142
official
2402.00719
title_snapshot
10.1145/3730930
One Model to Rig Them All: Diverse Skeleton Rigging with UniRig
https://doi.org/10.1145/3730930
[ "Jia-Peng Zhang", "Cheng-Feng Pu", "Meng-Hao Guo", "Yan-Pei Cao", "Shi-Min Hu" ]
The rapid evolution of 3D content creation, encompassing both AI-powered methods and traditional workflows, is driving an unprecedented demand for automated rigging solutions that can keep pace with the increasing complexity and diversity of 3D models. We introduce UniRig , a novel, unified framework for automatic skel...
journal
10.1145/3730930
official
2504.12451
title_snapshot
10.1145/3731182
High-performance CPU Cloth Simulation Using Domain-decomposed Projective Dynamics
https://doi.org/10.1145/3731182
[ "Zixuan Lu", "Ziheng Liu", "Lei Lan", "Huamin Wang", "Yuko Ishiwaka", "Chenfanfu Jiang", "Kui Wu", "Yin Yang" ]
Whenever the concept of high-performance cloth simulation is brought up, GPU acceleration is almost always the first that comes to mind. Leveraging immense parallelization, GPU algorithms have demonstrated significant success recently, whereas CPU methods are somewhat overlooked. Indeed, the need for an efficient CPU s...
journal
10.1145/3731182
official
null
null
10.1145/3731198
Fluid Simulation on Vortex Particle Flow Maps
https://doi.org/10.1145/3731198
[ "Sinan Wang", "Junwei Zhou", "Fan Feng", "Zhiqi Li", "Yuchen Sun", "Duowen Chen", "Greg Turk", "Bo Zhu" ]
We propose the V ortex P article F low M ap (VPFM) method to simulate incompressible flow with complex vortical evolution in the presence of dynamic solid boundaries. The core insight of our approach is that vorticity is an ideal quantity for evolution on particle flow maps, enabling significantly longer flow map dista...
journal
10.1145/3731198
official
2505.21946
title_snapshot
10.1145/3730829
A Hybrid Near-wall Model for Kinetic Simulation of Turbulent Boundary Layer Flows
https://doi.org/10.1145/3730829
[ "Mengyun Liu", "Kai Bai", "Xiaopei Liu" ]
Turbulent boundary layer represents one of the most complex but interesting phenomena in fluid flows. While the generation and alteration of sheared vortices in various interacting scales near the boundary are visually appealing, it is difficult to correctly replicate such phenomena by simulation, especially at high Re...
journal
10.1145/3730829
official
null
null
10.1145/3730887
Polynomial 2D Biharmonic Coordinates for High-order Cages
https://doi.org/10.1145/3730887
[ "Shibo Liu", "Tielin Dai", "Ligang Liu", "Xiao-Ming Fu" ]
We derive closed-form expressions of biharmonic coordinates for 2D high-order cages, enabling the transformation of the input polynomial curves into polynomial curves of any order. Central to our derivation is the use of the high-order boundary element method. We demonstrate the practicality and effectiveness of our me...
journal
10.1145/3730887
official
2501.15279
title_snapshot
10.1145/3730862
Digital Animation of Powder-Snow Avalanches
https://doi.org/10.1145/3730862
[ "Filipe Nascimento", "Fabricio S. Sousa", "Afonso Paiva" ]
Powder-snow avalanches are natural phenomena that result from an instability in the snow cover on a mountain relief. It begins with a dense avalanche core moving fast down the mountain. During its evolution, the snow particles in the avalanche front mix with the air, forming a suspended turbulent cloud of snow dust sur...
journal
10.1145/3730862
official
null
null
10.1145/3730900
Differentiable Geometric Acoustic Path Tracing using Time-Resolved Path Replay Backpropagation
https://doi.org/10.1145/3730900
[ "Ugo Finnendahl", "Markus Worchel", "Tobias Jüterbock", "Daniel Wujecki", "Fabian Brinkmann", "Stefan Weinzierl", "Marc Alexa" ]
Differentiable rendering has become a key ingredient in solving challenging inverse problems in computer graphics and vision. Existing systems can simulate and differentiate the spatial propagation of light. We exploit the duality of light transport simulations and geometric acoustics to apply differential rendering te...
journal
10.1145/3730900
official
null
null
10.1145/3730892
TransparentGS: Fast Inverse Rendering of Transparent Objects with Gaussians
https://doi.org/10.1145/3730892
[ "Letian Huang", "Dongwei Ye", "Jialin Dan", "Chengzhi Tao", "Huiwen Liu", "Kun Zhou", "Bo Ren", "Yuanqi Li", "Yanwen Guo", "Jie Guo" ]
The emergence of neural and Gaussian-based radiance field methods has led to considerable advancements in novel view synthesis and 3D object reconstruction. Nonetheless, specular reflection and refraction continue to pose significant challenges due to the instability and incorrect overfitting of radiance fields to high...
journal
10.1145/3730892
official
2504.18768
title_snapshot
10.1145/3731150
A Monte Carlo Rendering Framework for Simulating Optical Heterodyne Detection
https://doi.org/10.1145/3731150
[ "Juhyeon Kim", "Craig Benko", "Magnus Wrenninge", "Ryusuke Villemin", "Zeb Barber", "Wojciech Jarosz", "Adithya Pediredla" ]
Optical heterodyne detection (OHD) employs coherent light and optical interference techniques (Fig. 1-(A)) to extract physical parameters, such as velocity or distance, which are encoded in the frequency modulation of the light. With its superior signal-to-noise ratio compared to incoherent detection methods, such as t...
journal
10.1145/3731150
official
null
null
10.1145/3731195
Augmented Vertex Block Descent
https://doi.org/10.1145/3731195
[ "Chris Giles", "Elie Diaz", "Cem Yuksel" ]
Vertex Block Descent is a fast physics-based simulation method that is unconditionally stable, highly parallelizable, and capable of converging to the implicit Euler solution. We extend it using an augmented Lagrangian formulation to address some of its fundamental limitations. First, we introduce a mechanism to handle...
journal
10.1145/3731195
official
null
null
10.1145/3730841
CAST: Component-Aligned 3D Scene Reconstruction from an RGB Image
https://doi.org/10.1145/3730841
[ "Kaixin Yao", "Longwen Zhang", "Xinhao Yan", "Yan Zeng", "Qixuan Zhang", "Lan Xu", "Wei Yang", "Jiayuan Gu", "Jingyi Yu" ]
Recovering high-quality 3D scenes from a single RGB image is a challenging task in computer graphics. Current methods often struggle with domain-specific limitations or low-quality object generation. To address these, we propose CAST (Component-Aligned 3D Scene Reconstruction from a Single RGB Image), a novel method fo...
journal
10.1145/3730841
official
2502.12894
title_snapshot
10.1145/3730848
Creating Fluid-Interactive Virtual Agents by an Efficient Simulator with Local-domain Control
https://doi.org/10.1145/3730848
[ "Wenbin Song", "Heng Zhang", "Yang Wang", "Xiaopei Liu" ]
In the realm of digital twin systems, establishing simulation environments for creating and testing virtual agents has garnered substantial attention across various applications. The obtained control policies endow virtual agents with more realistic behaviors and interactive capabilities, finding applications in both c...
journal
10.1145/3730848
official
null
null
10.1145/3731166
DeFillet: Detection and Removal of Fillet Regions in Polygonal CAD Models
https://doi.org/10.1145/3731166
[ "Jing-En Jiang", "Hanxiao Wang", "Mingyang Zhao", "Dong-Ming Yan", "Shuangmin Chen", "Shiqing Xin", "Changhe Tu", "Wenping Wang" ]
Filleting is a fundamental operation in CAD systems, akin to a ball rolling between two adjacent surface patches, resulting in a seamless connection. The reverse process, which we refer to as DeFillet in this paper, is crucial for CAE analysis and secondary design phases. However, it presents significant challenges, pa...
journal
10.1145/3731166
official
null
null
10.1145/3730868
In Search of Empty Spheres: 3D Apollonius Diagrams on GPU
https://doi.org/10.1145/3730868
[ "Cyprien Plateau-Holleville", "Benjamin Stamm", "Vincent Nivoliers", "Maxime Maria", "Stéphane Mérillou" ]
We present a novel comprehensive construction algorithm of Apollonius diagrams designed for GPUs. Efficient and robust algorithms have been proposed for the computation of Voronoi diagrams or Power diagrams. In contrast, Apollonius cells are neither convex nor bounded by straight boundaries, making their computation co...
journal
10.1145/3730868
official
null
null
10.1145/3730853
Claycode: Stylable and Deformable 2D Scannable Codes
https://doi.org/10.1145/3730853
[ "Marco Maida", "Alberto Crescini", "Marco Perronet", "Elena Camuffo" ]
This paper introduces Claycode, a novel 2D scannable code designed for extensive stylization and deformation. Unlike traditional matrix-based codes (e.g. , QR codes), Claycodes encode their message in a tree structure. During the encoding process, bits are mapped into a topology tree, which is then depicted as a nestin...
journal
10.1145/3730853
official
2505.08666
title_snapshot
10.1145/3731149
RigAnything: Template-Free Autoregressive Rigging for Diverse 3D Assets
https://doi.org/10.1145/3731149
[ "Isabella Liu", "Zhan Xu", "Wang Yifan", "Hao Tan", "Zexiang Xu", "Xiaolong Wang", "Hao Su", "Zifan Shi" ]
We present RigAnything , a novel autoregressive transformer-based model, which makes 3D assets rig-ready by probabilistically generating joints and skeleton topologies and assigning skinning weights in a template-free manner. Unlike most existing auto-rigging methods, which rely on predefined skeleton templates and are...
journal
10.1145/3731149
official
2502.09615
title_snapshot
10.1145/3730913
On-the-fly Reconstruction for Large-Scale Novel View Synthesis from Unposed Images
https://doi.org/10.1145/3730913
[ "Andreas Meuleman", "Ishaan Shah", "Alexandre Lanvin", "Bernhard Kerbl", "George Drettakis" ]
Radiance field methods such as 3D Gaussian Splatting (3DGS) allow easy reconstruction from photos, enabling free-viewpoint navigation. Nonetheless, pose estimation using Structure from Motion and 3DGS optimization can still each take between minutes and hours of computation after capture is complete. SLAM methods combi...
journal
10.1145/3730913
official
2506.05558
title_snapshot
10.1145/3731428
Variable Shared Template for Consistent Non-rigid ICP
https://doi.org/10.1145/3731428
[ "Yucheol Jung", "Hyomin Kim", "Hyejeong Yoon", "Yoonha Hwang", "Seungyong Lee" ]
Non-rigid registration of 3D shape collections using a template mesh is essential for constructing 3D datasets. Traditional non-rigid Iterative Closest Point (ICP) methods rely on manually selected template meshes, which can result in inconsistent registrations when applied to diverse shape collections. This inconsiste...
journal
10.1145/3731428
official
null
null
10.1145/3731160
Generating Past and Future in Digital Painting Processes
https://doi.org/10.1145/3731160
[ "Lvmin Zhang", "Chuan Yan", "Yuwei Guo", "Jinbo Xing", "Maneesh Agrawala" ]
We present a framework to generate past and future processes for drawing process videos. Given a canvas image uploaded by a user, the framework can generate both preceding and succeeding states of the drawing process, and the generated states can be reused as inputs for further state generation. We observe that the use...
journal
10.1145/3731160
official
null
null
10.1145/3731203
Putting Rigid Bodies to Rest
https://doi.org/10.1145/3731203
[ "Hossein Baktash", "Nicholas Sharp", "Qingnan Zhou", "Alec Jacobson", "Keenan Crane" ]
This paper explores the analysis and design of the resting configurations of a rigid body, without the use of physical simulation. In particular, given a rigid body in R 3 , we identify all possible stationary points, as well as the probability that the body will stop at these points, assuming a random initial orientat...
journal
10.1145/3731203
official
null
null
10.1145/3731164
GenAnalysis: Joint Shape Analysis by Learning Man-Made Shape Generators with Deformation Regularizations
https://doi.org/10.1145/3731164
[ "Yuezhi Yang", "Haitao Yang", "Kiyohiro Nakayama", "Xiangru Huang", "Leonidas Guibas", "Qixing Huang" ]
We present GenAnalysis, an implicit shape generation framework that allows joint analysis of man-made shapes, including shape matching and joint shape segmentation. The key idea is to enforce an as-affine-as-possible (AAAP) deformation between synthetic shapes of the implicit generator that are close to each other in t...
journal
10.1145/3731164
official
2503.00807
title_snapshot
10.1145/3730935
WishGI: Lightweight Static Global Illumination Baking via Spherical Harmonics Fitting
https://doi.org/10.1145/3730935
[ "Junke Zhu", "Zehan Wu", "Qixing Zhang", "Cheng Liao", "Zhangjin Huang" ]
Global illumination combines direct and indirect lighting to create realistic lighting effects, bringing virtual scenes closer to reality. Static global illumination is a crucial component of virtual scene rendering, leveraging precomputation and baking techniques to significantly reduce runtime computational costs. Un...
journal
10.1145/3730935
official
2506.01288
title_snapshot
10.1145/3730866
Piecewise Ruled Approximation for Freeform Mesh Surfaces
https://doi.org/10.1145/3730866
[ "Yiling Pan", "Zhixin Xu", "Bin Wang", "Bailin Deng" ]
A ruled surface is a shape swept out by moving a line in 3D space. Due to their simple geometric forms, ruled surfaces have applications in various domains such as architecture and engineering. In the past, various approaches have been proposed to approximate a target shape using developable surfaces, which are special...
journal
10.1145/3730866
official
2501.15258
title_snapshot
10.1145/3730899
Moment Bounds are Differentiable: Efficiently Approximating Measures in Inverse Rendering
https://doi.org/10.1145/3730899
[ "Markus Worchel", "Marc Alexa" ]
All rendering methods aim at striking a balance between realism and efficiency. This is particularly relevant for differentiable rendering, where the additional aspect of differentiablity w.r.t. scene parameters causes increased computational complexity while, on the other hand, in the common application of inverse ren...
journal
10.1145/3730899
official
null
null
10.1145/3731193
EDGE: Epsilon-Difference Gradient Evolution for Buffer-Free Flow Maps
https://doi.org/10.1145/3731193
[ "Zhiqi Li", "Ruicheng Wang", "Junlin Li", "Duowen Chen", "Sinan Wang", "Bo Zhu" ]
We propose the Epsilon Difference Gradient Evolution (EDGE) method for accurate flow-map calculation on grids via Hermite interpolation without using velocity buffers. Our key idea is to integrate Gradient Evolution for accurate first-order derivatives and a tetrahedron-based Epsilon Difference scheme to compute higher...
journal
10.1145/3731193
official
null
null
10.1145/3731163
Gaussian Wave Splatting for Computer-Generated Holography
https://doi.org/10.1145/3731163
[ "Suyeon Choi", "Brian Chao", "Jacqueline Yang", "Manu Gopakumar", "Gordon Wetzstein" ]
State-of-the-art neural rendering methods optimize Gaussian scene representations from a few photographs for novel-view synthesis. Building on these representations, we develop an efficient algorithm, dubbed Gaussian Wave Splatting, to turn these Gaussians into holograms. Unlike existing computergenerated holography (C...
journal
10.1145/3731163
official
2505.06582
title_snapshot
10.1145/3731152
Solving partial differential equations in participating media
https://doi.org/10.1145/3731152
[ "Bailey Miller", "Rohan Sawhney", "Keenan Crane", "Ioannis Gkioulekas" ]
We consider the problem of solving partial differential equations (PDEs) in domains with complex microparticle geometry that is impractical, or intractable, to model explicitly. Drawing inspiration from volume rendering, we propose tackling this problem by treating the domain as a participating medium that models micro...
journal
10.1145/3731152
official
2506.08237
title_snapshot
10.1145/3730937
Transformer IMU Calibrator: Dynamic On-body IMU Calibration for Inertial Motion Capture
https://doi.org/10.1145/3730937
[ "Chengxu Zuo", "Jiawei Huang", "Xiao Jiang", "Yuan Yao", "Xiangren Shi", "Rui Cao", "Xinyu Yi", "Feng Xu", "Shihui Guo", "Yipeng Qin" ]
In this paper, we propose a novel dynamic calibration method for sparse inertial motion capture systems, which is the first to break the restrictive absolute static assumption in IMU calibration, i.e., the coordinate drift R G′ G and measurement offset R BS remain constant during the entire motion, thereby significantl...
journal
10.1145/3730937
official
2506.10580
title_snapshot
10.1145/3730872
A Versatile Quaternion-Based Constrained Rigid Body Dynamics
https://doi.org/10.1145/3730872
[ "Guirec Maloisel", "Ruben Grandia", "Christian Schumacher", "Espen Knoop", "Moritz Bächer" ]
We present a constrained Rigid Body Dynamics (RBD) that guarantees satisfaction of kinematic constraints, enabling direct simulation of complex mechanical systems with arbitrary kinematic structures. To ensure constraint satisfaction, we use an implicit integration scheme. For this purpose, we derive compatible dynamic...
journal
10.1145/3730872
official
null
null
10.1145/3730926
MonetGPT: Solving Puzzles Enhances MLLMs' Image Retouching Skills
https://doi.org/10.1145/3730926
[ "Niladri Shekhar Dutt", "Duygu Ceylan", "Niloy J. Mitra" ]
Retouching is an essential task in post-manipulation of raw photographs. Generative editing, guided by text or strokes, provides a new tool accessible to users but can easily change the identity of the original objects in unacceptable and unpredictable ways. In contrast, although traditional procedural edits, as common...
journal
10.1145/3730926
official
2505.06176
title_snapshot
10.1145/3730929
Tiny is not small enough: High quality, low-resource facial animation models through hybrid knowledge distillation
https://doi.org/10.1145/3730929
[ "Zhen Han", "Mattias Teye", "Derek Yadgaroff", "Judith Bütepage" ]
The training of high-quality, robust machine learning models for speech-driven 3D facial animation requires a large, diverse dataset of high-quality audio-animation pairs. To overcome the lack of such a dataset, recent work has introduced large pre-trained speech encoders that are robust to variations in the input audi...
journal
10.1145/3730929
official
2507.18352
title_snapshot
10.1145/3731192
Fluid Simulation on Compressible Flow Maps
https://doi.org/10.1145/3731192
[ "Duowen Chen", "Zhiqi Li", "Taiyuan Zhang", "Jinjin He", "Junwei Zhou", "Bart G. van Bloemen Waanders", "Bo Zhu" ]
This paper presents a unified compressible flow map framework designed to accommodate diverse compressible flow systems, including high-Mach-number flows (e.g., shock waves and supersonic aircraft), weakly compressible systems (e.g., smoke plumes and ink diffusion), and incompressible systems evolving through compressi...
journal
10.1145/3731192
official
null
null
10.1145/3730879
Streaming-Aware Neural Monte Carlo Rendering Framework with Unified Denoising-Compression and Client Collaboration
https://doi.org/10.1145/3730879
[ "Hangming Fan", "Yuchi Huo", "Chuankun Zheng", "Chonghao Hu", "Yazhen Yuan", "Rui Wang" ]
Recent advances in cloud rendering have brought us a promising alternative for interactive photorealistic rendering on lightweight devices, which used to be only available on high-end platforms equipped with powerful graphic cards. This technique enables users to perform rendering-related creative tasks, such as 3D pro...
journal
10.1145/3730879
official
null
null
10.1145/3731172
MyTimeMachine: Personalized Facial Age Transformation
https://doi.org/10.1145/3731172
[ "Luchao Qi", "Jiaye Wu", "Bang Gong", "Annie N. Wang", "David W. Jacobs", "Roni Sengupta" ]
Facial aging is a complex process, highly dependent on multiple factors like gender, ethnicity, lifestyle, etc., making it extremely challenging to learn a global aging prior to predict aging for any individual accurately. Existing techniques often produce realistic and plausible aging results, but the re-aged images o...
journal
10.1145/3731172
official
2411.14521
title_snapshot
10.1145/3731143
Single Edge Collapse Quad-Dominant Mesh Reduction
https://doi.org/10.1145/3731143
[ "Julian Knodt" ]
Mesh reduction using quadric error metrics is the industry standard for producing level-of-detail (LOD) geometry for meshes. Although industry tools produce visually excellent LODs, mesh topology is often ruined during decimation. This is because tools focus on triangle simplification and preserving rendered appearance...
journal
10.1145/3731143
official
2411.16874
title_snapshot
10.1145/3731177
Dress-1-to-3: Single Image to Simulation-Ready 3D Outfit with Diffusion Prior and Differentiable Physics
https://doi.org/10.1145/3731177
[ "Xuan Li", "Chang Yu", "Wenxin Du", "Ying Jiang", "Tianyi Xie", "Yunuo Chen", "Yin Yang", "Chenfanfu Jiang" ]
Recent advances in large models have significantly advanced image-to-3D reconstruction. However, the generated models are often fused into a single piece, limiting their applicability in downstream tasks. This paper focuses on 3D garment generation, a key area for applications like virtual try-on with dynamic garment a...
journal
10.1145/3731177
official
2502.03449
title_snapshot
10.1145/3731173
IntrinsicEdit: Precise generative image manipulation in intrinsic space
https://doi.org/10.1145/3731173
[ "Linjie Lyu", "Valentin Deschaintre", "Yannick Hold-Geoffroy", "Miloš Hašan", "Jae Shin Yoon", "Thomas Leimkühler", "Christian Theobalt", "Iliyan Georgiev" ]
Generative diffusion models have advanced image editing by delivering high-quality results through intuitive interfaces such as prompts, scribbles, and semantic drawing. However, these interfaces lack precise control, and associated editing methods often specialize in a single task. We introduce a versatile workflow fo...
journal
10.1145/3731173
official
2505.08889
title_snapshot
10.1145/3731205
Offset Geometric Contact
https://doi.org/10.1145/3731205
[ "Anka He Chen", "Jerry Hsu", "Ziheng Liu", "Miles Macklin", "Yin Yang", "Cem Yuksel" ]
We present a novel contact model, termed Offset Geometric Contact (OGC), for guaranteed penetration-free simulation of codimensional objects with minimal computational overhead. Our method is based on constructing a volumetric shape by offsetting each face along its normal direction, ensuring orthogonal contact forces,...
journal
10.1145/3731205
official
null
null
10.1145/3731148
Shape Space Spectra
https://doi.org/10.1145/3731148
[ "Yue Chang", "Otman Benchekroun", "Maurizio M. Chiaramonte", "Peter Yichen Chen", "Eitan Grinspun" ]
Eigenanalysis of differential operators, such as the Laplace operator or elastic energy Hessian, is typically restricted to a single shape and its discretization, limiting reduced order modeling (ROM). We introduce the first eigenanalysis method for continuously parameterized shape families. Given a parametric shape, o...
journal
10.1145/3731148
official
2408.10099
title_snapshot
10.1145/3730825
Facial Appearance Capture at Home with Patch-Level Reflectance Prior
https://doi.org/10.1145/3730825
[ "Yuxuan Han", "Junfeng Lyu", "Kuan Sheng", "Minghao Que", "Qixuan Zhang", "Lan Xu", "Feng Xu" ]
Existing facial appearance capture methods can reconstruct plausible facial reflectance from smartphone-recorded videos. However, the reconstruction quality is still far behind the ones based on studio recordings. This paper fills the gap by developing a novel daily-used solution with a co-located smartphone and flashl...
journal
10.1145/3730825
official
2506.03478
title_snapshot
10.1145/3730922
Neural Co-Optimization of Structural Topology, Manufacturable Layers, and Path Orientations for Fiber-Reinforced Composites
https://doi.org/10.1145/3730922
[ "Tao Liu", "Tianyu Zhang", "Yongxue Chen", "Weiming Wang", "Yu Jiang", "Yuming Huang", "Charlie C. L. Wang" ]
We propose a neural network-based computational framework for the simultaneous optimization of structural topology, curved layers, and path orientations to achieve strong anisotropic strength in fiber-reinforced thermoplastic composites while ensuring manufacturability. Our framework employs three implicit neural field...
journal
10.1145/3730922
official
2505.03779
title_snapshot
10.1145/3731189
4D Gaussian Videos with Motion Layering
https://doi.org/10.1145/3731189
[ "Pinxuan Dai", "Peiquan Zhang", "Zheng Dong", "Ke Xu", "Yifan Peng", "Dandan Ding", "Yujun Shen", "Yin Yang", "Xinguo Liu", "Rynson W. H. Lau", "Weiwei Xu" ]
Online free-view navigation in volumetric videos requires high-quality rendering and real-time streaming in order to provide immersive user experiences. However, existing methods ( e.g. , dynamic NeRF and 3DGS) may not handle dynamic scenes with complex motions, and their models may not be streamable due to storage and...
journal
10.1145/3731189
official
null
null
10.1145/3731154
VR-Doh: Hands-on 3D Modeling in Virtual Reality
https://doi.org/10.1145/3731154
[ "Zhaofeng Luo", "Zhitong Cui", "Shijian Luo", "Mengyu Chu", "Minchen Li" ]
We introduce VR-Doh, an open-source, hands-on 3D modeling system that enables intuitive creation and manipulation of elastoplastic objects in Virtual Reality (VR). By customizing the Material Point Method (MPM) for real-time simulation of hand-induced large deformations and enhancing 3D Gaussian Splatting for seamless ...
journal
10.1145/3731154
official
2412.00814
title_snapshot
10.1145/3731210
IMLS-Splatting: Efficient Mesh Reconstruction from Multi-view Images via Point Representation
https://doi.org/10.1145/3731210
[ "Kaizhi Yang", "Liu Dai", "Isabella Liu", "Xiaoshuai Zhang", "Xiaoyan Sun", "Xuejin Chen", "Zexiang Xu", "Hao Su" ]
Multi-view mesh reconstruction has long been a challenging problem in graphics and computer vision. In contrast to recent volumetric rendering methods that generate meshes through post-processing, we propose an end-to-end mesh optimization approach called IMLS-Splatting. Our method leverages the sparsity and flexibilit...
journal
10.1145/3731210
official
null
null
10.1145/3731168
Transforming Unstructured Hair Strands into Procedural Hair Grooms
https://doi.org/10.1145/3731168
[ "Wesley Chang", "Andrew L. Russell", "Stephane Grabli", "Matt Jen-Yuan Chiang", "Christophe Hery", "Doug Roble", "Ravi Ramamoorthi", "Tzu-Mao Li", "Olivier Maury" ]
In recent years, reconstruction methods have been developed that can recover strand-level hair geometry from images. However, these methods recover a vast number of individual hair strands that are difficult to edit and simulate. Many methods also rely on neural priors to infer non-visible inner hair, which can result ...
journal
10.1145/3731168
official
null
null
10.1145/3730836
Hand-Shadow Poser
https://doi.org/10.1145/3730836
[ "Hao Xu", "Yinqiao Wang", "Niloy J. Mitra", "Shuaicheng Liu", "Pheng-Ann Heng", "Chi-Wing Fu" ]
Hand shadow art is a captivating art form, creatively using hand shadows to reproduce expressive shapes on the wall. In this work, we study an inverse problem: given a target shape, find the poses of left and right hands that together best produce a shadow resembling the input. This problem is nontrivial, since the des...
journal
10.1145/3730836
official
2505.07012
title_snapshot
10.1145/3730824
Learning to Assemble with Alternative Plans
https://doi.org/10.1145/3730824
[ "Ziqi Wang", "Wenjun Liu", "Jingwen Wang", "Gabriel Vallat", "Fan Shi", "Stefana Parascho", "Maryam Kamgarpour" ]
We present a reinforcement learning framework for constructing assemblies composed of rigid parts, which are commonly seen in many historical masonry buildings and bridges. Traditional construction methods for such structures often depend on dense scaffolding to stabilize their intermediate assembly steps, making the p...
journal
10.1145/3730824
official
null
null
10.1145/3731151
C 5 D: Sequential Continuous Convex Collision Detection Using Cone Casting
https://doi.org/10.1145/3731151
[ "Xiaodi Yuan", "Fanbo Xiang", "Yin Yang", "Hao Su" ]
In physics-based simulation of rigid or nearly rigid objects, collisions often become the primary performance bottleneck, particularly when enforcing intersection-free constraints. Previous simulation frameworks rely on primitive-level CCD algorithms. Due to the large number of colliding surface primitives to process, ...
journal
10.1145/3731151
official
null
null
10.1145/3731200
Collaborative On-Sensor Array Cameras
https://doi.org/10.1145/3731200
[ "Jipeng Sun", "Kaixuan Wei", "Thomas Eboli", "Congli Wang", "Cheng Zheng", "Zhihao Zhou", "Arka Majumdar", "Wolfgang Heidrich", "Felix Heide" ]
Modern nanofabrication techniques have enabled us to manipulate the wave-front of light with sub-wavelength-scale structures, offering the potential to replace bulky refractive surfaces in conventional optics with ultrathin metasurfaces. In theory, arrays of nanoposts provide unprecedented control over manipulating the...
journal
10.1145/3731200
official
2506.04061
title_snapshot
10.1145/3730889
Field Smoothness-Controlled Partition for Quadrangulation
https://doi.org/10.1145/3730889
[ "Zhongxuan Liang", "Wei Du", "Xiao-Ming Fu" ]
We propose a novel partition method for reliable feature-aligned quadrangulation. The core insight of the partition is that smooth streamlines distant from singularities are more suitable as patch boundaries. This allows singularities to be enclosed within patches, resulting in straighter patch boundaries and reducing ...
journal
10.1145/3730889
official
null
null
10.1145/3730891
Revisiting Tradition and Beyond: A Customized Bilateral Filtering Framework for Point Cloud Denoising
https://doi.org/10.1145/3730891
[ "Peng Li", "Zeyong Wei", "Honghua Chen", "Xuefeng Yan", "Mingqiang Wei" ]
Deep learning-based methods have become the dominant solution for point cloud denoising, offering strong generalization capabilities through data-driven training. However, traditional methods, despite their drawbacks of heavy parameter tuning and weak generalization, retain unique advantages in interpretability and the...
journal
10.1145/3730891
official
null
null
10.1145/3731191
Variational Surface Reconstruction Using Natural Neighbors
https://doi.org/10.1145/3731191
[ "Jianjun Xia", "Tao Ju" ]
Surface reconstruction from points is a fundamental problem in computer graphics. While numerous methods have been proposed, it remains challenging to reconstruct from sparse and non-uniform point distributions, particularly when normals are absent. We present a robust and scalable method for reconstructing an implicit...
journal
10.1145/3731191
official
null
null
10.1145/3731181
Designing 3D Anisotropic Frame Fields with Odeco Tensors
https://doi.org/10.1145/3731181
[ "Haikuan Zhu", "Hongbo Li", "Hsueh-Ti Derek Liu", "Wenping Wang", "Jing Hua", "Zichun Zhong" ]
This paper introduces a method to synthesize a 3D tensor field within a constrained geometric domain represented as a tetrahedral mesh. Whereas previous techniques optimize for isotropic fields, we focus on anisotropic tensor fields that are smooth and aligned with the domain boundary or user guidance. The key ingredie...
journal
10.1145/3731181
official
2505.05639
title_snapshot
10.1145/3731421
Variational Green and Biharmonic Coordinates for 2D Polynomial Cages
https://doi.org/10.1145/3731421
[ "Élie Michel", "Alec Jacobson", "Siddhartha Chaudhuri", "Jean-Marc Thiery" ]
We present closed-form expressions for Green and biharmonic coordinates with respect to polynomial curved 2D cages, enabling reliable cage-based image deformation both to and from a curved cage. We further provide closed-form expressions for first- and second-order derivatives of these coordinates with respect to the e...
journal
10.1145/3731421
official
null
null
10.1145/3730840
BANG: Dividing 3D Assets via Generative Exploded Dynamics
https://doi.org/10.1145/3730840
[ "Longwen Zhang", "Qixuan Zhang", "Haoran Jiang", "Yinuo Bai", "Wei Yang", "Lan Xu", "Jingyi Yu" ]
3D creation has always been a unique human strength, driven by our ability to deconstruct and reassemble objects using our eyes, mind and hand. However, current 3D design tools struggle to replicate this natural process, requiring considerable artistic expertise and manual labor. This paper introduces BANG, a novel gen...
journal
10.1145/3730840
official
2507.21493
title_snapshot
10.1145/3731216
Feature-Aligned Parametrization in Penner Coordinates
https://doi.org/10.1145/3731216
[ "Ryan Capouellez", "Rodrigo Singh", "Martin Heistermann", "David Bommes", "Denis Zorin" ]
Parametrization is a key element of many geometric modeling tasks. Seamless parametrization, in particular, is needed as a starting point for many algorithms for quadrangulation and conversion to high-order patches, as well as for the construction of seamless texture maps and displacement maps. Seamless parametrization...
journal
10.1145/3731216
official
null
null
10.1145/3730843
TokenVerse: Versatile Multi-concept Personalization in Token Modulation Space
https://doi.org/10.1145/3730843
[ "Daniel Garibi", "Shahar Yadin", "Roni Paiss", "Omer Tov", "Shiran Zada", "Ariel Ephrat", "Tomer Michaeli", "Inbar Mosseri", "Tali Dekel" ]
We present TokenVerse - a method for multi-concept personalization, leveraging a pre-trained text-to-image diffusion model. Our framework can disentangle complex visual elements and attributes from as little as a single image, while enabling seamless plug-and-play generation of combinations of concepts extracted from m...
journal
10.1145/3730843
official
2501.12224
title_snapshot
10.1145/3730943
NAM: Neural Adjoint Maps for refining shape correspondences
https://doi.org/10.1145/3730943
[ "Giulio Viganò", "Maks Ovsjanikov", "Simone Melzi" ]
In this paper, we propose a novel approach to refine 3D shape correspondences by leveraging multi-layer perceptions within the framework of functional maps. Central to our contribution is the concept of Neural Adjoint Maps , a novel neural representation that generalizes the traditional solution of functional maps for ...
journal
10.1145/3730943
official
null
null
10.1145/3731170
Controllable Complex Freezing Dynamics Simulation on Thin Films
https://doi.org/10.1145/3731170
[ "Yijie Liu", "Taiyuan Zhang", "Xiaoxiao Yan", "Nuoming Liu", "Bo Ren" ]
The freezing of thin films is a mesmerizing natural phenomenon, inspiring photographers to capture its beauty through their lenses and digital artists to recreate its allure using effects tools. In this paper, we present a novel method for physically simulating the intricate freezing dynamics on thin films. By accounti...
journal
10.1145/3731170
official
null
null
10.1145/3731201
Arenite: A Physics-based Sandstone Simulator
https://doi.org/10.1145/3731201
[ "Zhanyu Yang", "Aryamaan Jain", "Guillaume Cordonnier", "Marie-Paule Cani", "Zhaopeng Wang", "Bedrich Benes" ]
We introduce Arenite, a novel physics-based approach for modeling sandstone structures. The key insight of our work is that simulating a combination of stress and multi-factor erosion enables the generation of a wide variety of sandstone structures observed in nature. We isolate the key shape-forming phenomena: multi-p...
journal
10.1145/3731201
official
null
null
10.1145/3730880
Designing Pin-pression Gripper and Learning its Dexterous Grasping with Online In-hand Adjustment
https://doi.org/10.1145/3730880
[ "Hewen Xiao", "Xiuping Liu", "Hang Zhao", "Jian Liu", "Kai Xu" ]
We introduce a novel design of parallel-jaw grippers drawing inspiration from pin-pression toys. The proposed pin-pression gripper features a distinctive mechanism in which each finger integrates a 2D array of pins capable of independent extension and retraction. This unique design allows the gripper to instantaneously...
journal
10.1145/3730880
official
2505.18994
title_snapshot
10.1145/3731183
JGS2: Near Second-order Converging Jacobi/Gauss-Seidel for GPU Elastodynamics
https://doi.org/10.1145/3731183
[ "Lei Lan", "Zixuan Lu", "Chun Yuan", "Weiwei Xu", "Hao Su", "Huamin Wang", "Chenfanfu Jiang", "Yin Yang" ]
In parallel simulation, convergence and parallelism are often seen as inherently conflicting objectives. Improved parallelism typically entails lighter local computation and weaker coupling, which unavoidably slow the global convergence. This paper presents a novel GPU algorithm that achieves convergence rates comparab...
journal
10.1145/3731183
official
2506.06494
title_snapshot
10.1145/3731424
ViSA: Physics-based Virtual Stunt Actors for Ballistic Stunts
https://doi.org/10.1145/3731424
[ "Minseok Kim", "Wonjeong Seo", "Sung-Hee Lee", "Jungdam Won" ]
We introduce ViSA (Virtual Stunt Actors), an interactive animation system designed to create realistic ballistic stunt actions frequently seen in filmmaking and TV production. By providing spatial constraints suitable for the desired stunt scene, our system generates physically plausible motions satisfying the given co...
journal
10.1145/3731424
official
null
null
10.1145/3731207
MiSo: A DSL for Robust and Efficient Solve and MInimize Problems
https://doi.org/10.1145/3731207
[ "Federico Sichetti", "Enrico Puppo", "Zizhou Huang", "Marco Attene", "Denis Zorin", "Daniele Panozzo" ]
Many problems in computer graphics can be formulated as finding the global minimum of a function subject to a set of non-linear constraints (Minimize), or finding all solutions of a system of non-linear constraints (Solve). We introduce MiSo, a domain-specific language and compiler for generating efficient C++ code for...
journal
10.1145/3731207
official
null
null
10.1145/3731206
Diffuse-CLoC: Guided Diffusion for Physics-based Character Look-ahead Control
https://doi.org/10.1145/3731206
[ "Xiaoyu Huang", "Takara Truong", "Yunbo Zhang", "Fangzhou Yu", "Jean Pierre Sleiman", "Jessica Hodgins", "Koushil Sreenath", "Farbod Farshidian" ]
We present Diffuse-CLoC, a guided diffusion framework for physics-based look-ahead control that enables intuitive, steerable, and physically realistic motion generation. While existing kinematics motion generation with diffusion models offer intuitive steering capabilities with inference-time conditioning, they often f...
journal
10.1145/3731206
official
2503.11801
title_snapshot
10.1145/3730826
Fast Subspace Fluid Simulation with a Temporally-Aware Basis
https://doi.org/10.1145/3730826
[ "Siyuan Chen", "Yixin Chen", "Jonathan Panuelos", "Otman Benchekroun", "Yue Chang", "Eitan Grinspun", "Zhecheng Wang" ]
We present a novel reduced-order fluid simulation technique leveraging Dynamic Mode Decomposition (DMD) to achieve fast, memory-efficient, and user-controllable subspace simulation. We demonstrate that our approach combines the strengths of both spatial reduced order models (ROMs) as well as spectral decompositions. By...
journal
10.1145/3730826
official
2502.05339
title_snapshot
10.1145/3731429
Light Pipe Holographic Display: Bandwidth-preserved Kaleidoscopic Guiding for AR Glasses
https://doi.org/10.1145/3731429
[ "Minseok Chae", "Chun Chen", "Seung-Woo Nam", "Yoonchan Jeong" ]
In this paper, we present a holographic display using a light pipe for augmented reality, and the hologram rendering method via bandwidth-preserved kaleidoscopic guiding method. Conventional augmented reality displays typically share optical architectures where the light engine and image combiner are adjacent. Minimizi...
journal
10.1145/3731429
official
2507.04374
title_snapshot
10.1145/3730928
Multi-Dimensional Procedural Wave Noise
https://doi.org/10.1145/3730928
[ "Pascal Guehl", "Rémi Allègre", "Guillaume Gilet", "Basile Sauvage", "Marie-Paule Cani", "Jean-Michel Dischler" ]
While precise spectral control can be achieved through sparse convolution, corresponding state of the art noise models are typically too expensive for solid noise. We introduce an alternative, wave-based procedural noise model, fast enough to be used in any dimension. We express the noise in the spectral domain and the...
journal
10.1145/3730928
official
null
null
10.1145/3731212
Faraday Cage Estimation of Normals for Point Clouds and Ribbon Sketches
https://doi.org/10.1145/3731212
[ "Daniel Scrivener", "Daniel Cui", "Ellis Coldren", "S. Mazdak Abulnaga", "Mikhail Bessmeltsev", "Edward Chien" ]
We propose a novel method (FaCE) for normal estimation of unoriented point clouds and VR ribbon sketches that leverages a modeling of the Faraday cage effect. Input points, or a sampling of the ribbons, form a conductive cage and shield the interior from external fields. The gradient of the maximum field strength over ...
journal
10.1145/3731212
official
null
null
10.1145/3731426
A Deep Learning-based Virtual Oculoplastic Surgery Simulator
https://doi.org/10.1145/3731426
[ "Seonghyeon Kim", "Chang Wook Seo", "Kwanggyoon Seo", "Seung Han Song", "Junyong Noh" ]
Oculoplastic surgery is a critical treatment for various eye conditions, such as ptosis, which can cause both aesthetic and functional issues. Due to the anxiety about the outcome, patients are often hesitant to undergo the necessary procedures required for the surgery. Virtual oculoplastic surgery simulation technolog...
journal
10.1145/3731426
official
null
null
10.1145/3731159
NeurCross: A Neural Approach to Computing Cross Fields for Quad Mesh Generation
https://doi.org/10.1145/3731159
[ "Qiujie Dong", "Huibiao Wen", "Rui Xu", "Shuangmin Chen", "Jiaran Zhou", "Shiqing Xin", "Changhe Tu", "Taku Komura", "Wenping Wang" ]
Quadrilateral mesh generation plays a crucial role in numerical simulations within Computer-Aided Design and Engineering (CAD/E). Producing high-quality quadrangulation typically requires satisfying four key criteria. First, the quadrilateral mesh should closely align with principal curvature directions. Second, singul...
journal
10.1145/3731159
official
2405.13745
title_snapshot
10.1145/3731179
Adaptive Algebraic Reuse of Reordering in Cholesky Factorizations with Dynamic Sparsity Patterns
https://doi.org/10.1145/3731179
[ "Behrooz Zarebavani", "Danny M. Kaufman", "David I. W. Levin", "Maryam Mehri Dehnavi" ]
We introduce Parth, a fill-reducing ordering method for sparse Cholesky solvers with dynamic sparsity patterns (e.g., in physics simulations with contact or geometry processing with local remeshing). Parth facilitates the selective reuse of fill-reducing orderings when sparsity patterns exhibit temporal coherence, avoi...
journal
10.1145/3731179
official
2501.04011
title_judge
10.1145/3731199
MaterialPicker: Multi-Modal DiT-Based Material Generation
https://doi.org/10.1145/3731199
[ "Xiaohe Ma", "Valentin Deschaintre", "Miloš Hašan", "Fujun Luan", "Kun Zhou", "Hongzhi Wu", "Yiwei Hu" ]
High-quality material generation is key for virtual environment authoring and inverse rendering. We propose MaterialPicker, a multi-modal material generator leveraging a Diffusion Transformer (DiT) architecture, improving and simplifying the creation of high-quality materials from text prompts and/or photographs. Our m...
journal
10.1145/3731199
official
2412.03225
title_snapshot
10.1145/3730944
Painless Differentiable Rotation Dynamics
https://doi.org/10.1145/3730944
[ "Magí Romanyà-Serrasolsas", "Juan J. Casafranca", "Miguel A. Otaduy" ]
We propose the formulation of forward and differentiable rigid-body dynamics using Lie-algebra rotation derivatives. In particular, we show how this approach can easily be applied to incremental-potential formulations of forward dymamics, and we introduce a novel definition of adjoints for differentiable dynamics. In c...
journal
10.1145/3730944
official
null
null
10.1145/3731155
CK-MPM: A Compact-Kernel Material Point Method
https://doi.org/10.1145/3731155
[ "Michael Liu", "Xinlei Wang", "Minchen Li" ]
The Material Point Method (MPM) has become a cornerstone of physics-based simulation, widely used in geomechanics and computer graphics for modeling phenomena such as granular flows, viscoelasticity, fracture mechanics, etc. Despite its versatility, the original MPM suffers from cell-crossing instabilities caused by di...
journal
10.1145/3731155
official
2412.10399
title_snapshot
10.1145/3731158
AlignTex: Pixel-Precise Texture Generation from Multi-view Artwork
https://doi.org/10.1145/3731158
[ "Yuqing Zhang", "Hao Xu", "Yiqian Wu", "Sirui Chen", "Sirui Lin", "Xiang Li", "Xifeng Gao", "Xiaogang Jin" ]
Current 3D asset creation pipelines typically consist of three stages: creating multi-view concept art, producing 3D meshes based on the artwork, and painting textures for the meshes—an often labor-intensive process. Automated texture generation offers significant acceleration, but prior methods, which fine-tune 2D dif...
journal
10.1145/3731158
official
null
null
10.1145/3730908
Boolean Operation for CAD Models Using a Hybrid Representation
https://doi.org/10.1145/3730908
[ "Yingyu Yang", "Xiaohong Jia", "Bolun Wang", "Jieyin Yang", "Shiqing Xin", "Dong-Ming Yan" ]
Boolean operations for Boundary Representation (B-Rep) models are among the most commonly used functions in Computer Aided Design (CAD) systems. They are also one of the most delicate soft modules, with challenges arising from complex algorithmic flows and efficiency and accuracy issues, especially in extreme cases. Co...
journal
10.1145/3730908
official
null
null
10.1145/3730858
Order Matters: Learning Element Ordering for Graphic Design Generation
https://doi.org/10.1145/3730858
[ "Bo Yang", "Ying Cao" ]
The past few years have witnessed an emergent interest in building generative models for the graphic design domain. For adoption of powerful deep generative models with Transformer-based neural backbones, prior approaches formulate designs as ordered sequences of elements, and simply order the elements in a random or r...
journal
10.1145/3730858
official
null
null
10.1145/3731147
Linear-Time Transport with Rectified Flows
https://doi.org/10.1145/3731147
[ "Khoa Do", "David Coeurjolly", "Pooran Memari", "Nicolas Bonneel" ]
Matching probability distributions allows to compare or interpolate them, or model their manifold. Optimal transport is a tool that solves this matching problem. However, despite the development of numerous exact and approximate algorithms, these approaches remain too slow for large datasets due to the inherent challen...
journal
10.1145/3731147
official
null
null
10.1145/3730933
C-Tubes: Design and Optimization of Tubular Structures Composed of Developable Strips
https://doi.org/10.1145/3730933
[ "Michele Vidulis", "Klara Mundilova", "Quentin Becker", "Florin Isvoranu", "Mark Pauly" ]
We introduce C-tubes , 3D tubular structures composed of developable surface strips. C-tubes can be understood as a generalization of Monge surfaces—a special class of sweep surfaces—towards the recently introduced conenets. This observation allows formulating a constructive algorithm to create tubular structures that ...
journal
10.1145/3730933
official
null
null
10.1145/3731162
Dynamic Mesh Processing on the GPU
https://doi.org/10.1145/3731162
[ "Ahmed H. Mahmoud", "Serban D. Porumbescu", "John D. Owens" ]
We present a system for dynamic triangle mesh processing entirely on the GPU. Our system features an efficient data structure that enables rapid updates to mesh connectivity and attributes. By partitioning the mesh into small patches, we process all dynamic updates for each patch within the GPU's fast shared memory. Th...
journal
10.1145/3731162
official
null
null
10.1145/3730855
Practical Inverse Rendering of Textured and Translucent Appearance
https://doi.org/10.1145/3730855
[ "Philippe Weier", "Jérémy Riviere", "Ruslan Guseinov", "Stephan Garbin", "Philipp Slusallek", "Bernd Bickel", "Thabo Beeler", "Delio Vicini" ]
Inverse rendering has emerged as a standard tool to reconstruct the parameters of appearance models from images (e.g., textured BSDFs). In this work, we present several novel contributions motivated by the practical challenges of recovering high-resolution surface appearance textures, including spatially-varying subsur...
journal
10.1145/3730855
official
null
null
10.1145/3731214
Echoes of the Coliseum: Towards 3D Live streaming of Sports Events
https://doi.org/10.1145/3731214
[ "Junkai Huang", "Saswat Subhajyoti Mallick", "Alejandro Amat", "Marc Ruiz Olle", "Albert Mosella-Montoro", "Bernhard Kerbl", "Francisco Vicente Carrasco", "Fernando De la Torre" ]
Human-centered live events have always played a pivotal role in shaping culture and fostering social connections. Traditional 2D live transmissions fail to replicate the immersive quality of physical attendance. Addressing this gap, this paper proposes LiveSplats , a framework towards real-time, photo-realistic 3D reco...
journal
10.1145/3731214
official
null
null
10.1145/3731174
Unbiased Differential Visibility Using Fixed-Step Walk-on-Spherical-Caps And Closest Silhouettes
https://doi.org/10.1145/3731174
[ "Lifan Wu", "Nathan Morrical", "Sai Praveen Bangaru", "Rohan Sawhney", "Shuang Zhao", "Chris Wyman", "Ravi Ramamoorthi", "Aaron Lefohn" ]
Computing derivatives of path integrals under evolving scene geometry is a fundamental problem in physics-based differentiable rendering, which requires differentiating discontinuities in the visibility function. Warped-area reparameterization is a powerful technique to compute differential visibility, and key is const...
journal
10.1145/3731174
official
null
null
10.1145/3731178
Predicting Fabric Appearance Through Thread Scattering and Inversion
https://doi.org/10.1145/3731178
[ "Mengqi (Mandy) Xia", "Zhaoyang Zhang", "Sumit Chaturvedi", "Yutong Yi", "Rundong Wu", "Holly Rushmeier", "Julie Dorsey" ]
The fashion industry has a real need to preview fabric designs using the actual threads they intend to use, ensuring that the designs they envisage can be physically realized. Unfortunately, today's fabric rendering relies on either hand-tuned parameters or parameters acquired from already fabricated cloth. Furthermore...
journal
10.1145/3731178
official
null
null
10.1145/3730842
HoLa: B-Rep Generation using a Holistic Latent Representation
https://doi.org/10.1145/3730842
[ "Yilin Liu", "Duoteng Xu", "Xingyao Yu", "Xiang Xu", "Daniel Cohen-Or", "Hao Zhang", "Hui Huang" ]
We introduce a novel representation for learning and generating Computer-Aided Design (CAD) models in the form of boundary representations (B-Reps). Our representation unifies the continuous geometric properties of B-Rep primitives in different orders (e.g., surfaces and curves) and their discrete topological relations...
journal
10.1145/3730842
official
2504.14257
title_snapshot
10.1145/3731176
Rectangular Surface Parameterization
https://doi.org/10.1145/3731176
[ "Etienne Corman", "Keenan Crane" ]
This paper describes a method for computing surface parameterizations that map infinitesimal axis-aligned squares in the plane to infinitesimal rectangles on the surface. Such rectangular parameterizations are needed for a broad range of tasks, from physical simulation to geometric modeling to computational fabrication...
journal
10.1145/3731176
official
null
null
10.1145/3730834
Fast But Accurate: A Real-Time Hyperelastic Simulator with Robust Frictional Contact
https://doi.org/10.1145/3730834
[ "Ziqiu Zeng", "Siyuan Luo", "Fan Shi", "Zhongkai Zhang" ]
We present a GPU-friendly framework for real-time implicit simulation of elastic material in the presence of frictional contacts. The integration of hyperelasticity, non-interpenetration contact, and friction in real-time simulations presents formidable nonlinear and non-smooth problems, which are highly challenging to...
journal
10.1145/3730834
official
2503.15078
title_snapshot
10.1145/3730942
Conformal First Passage for Epsilon-free Walk-on-Spheres
https://doi.org/10.1145/3730942
[ "Paul Himmler", "Tobias Günther" ]
In recent years, grid-free Monte Carlo methods have gained increasing popularity for solving fundamental partial differential equations. For a given point in the domain, the Walk-on-Spheres method solves a boundary integral equation by integrating recursively over the largest possible sphere. When the walks approach bo...
journal
10.1145/3730942
official
null
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