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10.1145/3272127.3275030
Selective guided sampling with complete light transport paths
https://doi.org/10.1145/3272127.3275030
[ "Florian Reibold", "Johannes Hanika", "Alisa Jung", "Carsten Dachsbacher" ]
Finding good global importance sampling strategies for Monte Carlo light transport is challenging. While estimators using local methods (such as BSDF sampling or next event estimation) often work well in the majority of a scene, small regions in path space can be sampled insufficiently (e.g. a reflected caustic). We pr...
journal
10.1145/3272127.3275030
null
null
10.1145/3272127.3275016
Practical multiple scattering for rough surfaces
https://doi.org/10.1145/3272127.3275016
[ "Joo Ho Lee", "Adrian Jarabo", "Daniel S. Jeon", "Diego Gutierrez", "Min H. Kim" ]
Microfacet theory concisely models light transport over rough surfaces. Specular reflection is the result of single mirror reflections on each facet, while exact computation of multiple scattering is either neglected, or modeled using costly importance sampling techniques. Practical but accurate simulation of multiple ...
journal
10.1145/3272127.3275016
null
null
10.1145/3272127.3275041
Depth from motion for smartphone AR
https://doi.org/10.1145/3272127.3275041
[ "Julien Valentin", "Adarsh Kowdle", "Jonathan T. Barron", "Neal Wadhwa", "Max Dzitsiuk", "Michael Schoenberg", "Vivek Verma", "Ambrus Csaszar", "Eric Turner", "Ivan Dryanovski", "Joao Afonso", "Jose Pascoal", "Konstantine Tsotsos", "Mira Leung", "Mirko Schmidt", "Onur Guleryuz", "Sam...
Augmented reality (AR) for smartphones has matured from a technology for earlier adopters, available only on select high-end phones, to one that is truly available to the general public. One of the key breakthroughs has been in low-compute methods for six degree of freedom (6DoF) tracking on phones using only the exist...
journal
10.1145/3272127.3275041
null
null
10.1145/3272127.3275074
Learning a shared shape space for multimodal garment design
https://doi.org/10.1145/3272127.3275074
[ "Tuanfeng Y. Wang", "Duygu Ceylan", "Jovan Popović", "Niloy J. Mitra" ]
Designing real and virtual garments is becoming extremely demanding with rapidly changing fashion trends and increasing need for synthesizing realisticly dressed digital humans for various applications. This necessitates creating simple and effective workflows to facilitate authoring sewing patterns customized to garme...
journal
10.1145/3272127.3275074
1806.11335
title_snapshot
10.1145/3272127.3275015
Towards multifocal displays with dense focal stacks
https://doi.org/10.1145/3272127.3275015
[ "Jen-Hao Rick Chang", "B. V. K. Vijaya Kumar", "Aswin C. Sankaranarayanan" ]
We present a virtual reality display that is capable of generating a dense collection of depth/focal planes. This is achieved by driving a focus-tunable lens to sweep a range of focal lengths at a high frequency and, subsequently, tracking the focal length precisely at microsecond time resolutions using an optical modu...
journal
10.1145/3272127.3275015
1805.10664
title_snapshot
10.1145/3272127.3275022
Flycon: real-time environment-independent multi-view human pose estimation with aerial vehicles
https://doi.org/10.1145/3272127.3275022
[ "Tobias Nägeli", "Samuel Oberholzer", "Silvan Plüss", "Javier Alonso-Mora", "Otmar Hilliges" ]
We propose a real-time method for the infrastructure-free estimation of articulated human motion. The approach leverages a swarm of camera-equipped flying robots and jointly optimizes the swarm's and skeletal states, which include the 3D joint positions and a set of bones. Our method allows to track the motion of human...
journal
10.1145/3272127.3275022
null
null
10.1145/3272127.3275086
Real-time viscous thin films
https://doi.org/10.1145/3272127.3275086
[ "Orestis Vantzos", "Saar Raz", "Mirela Ben-Chen" ]
We propose a novel discrete scheme for simulating viscous thin films at real-time frame rates. Our scheme is based on a new formulation of the gradient flow approach, that leads to a discretization based on local stencils that are easily computable on the GPU. Our approach has physical fidelity, as the total mass is gu...
journal
10.1145/3272127.3275086
null
null
10.1145/3272127.3275077
Acquiring spatially varying appearance of printed holographic surfaces
https://doi.org/10.1145/3272127.3275077
[ "Antoine Toisoul", "Daljit Singh Dhillon", "Abhijeet Ghosh" ]
We present two novel and complimentary approaches to measure diffraction effects in commonly found planar spatially varying holographic surfaces. Such surfaces are increasingly found in various decorative materials such as gift bags, holographic papers, clothing and security holograms, and produce impressive visual eff...
journal
10.1145/3272127.3275077
null
null
10.1145/3272127.3275052
Multi-chart generative surface modeling
https://doi.org/10.1145/3272127.3275052
[ "Heli Ben-Hamu", "Haggai Maron", "Itay Kezurer", "Gal Avineri", "Yaron Lipman" ]
This paper introduces a 3D shape generative model based on deep neural networks. A new image-like ( i.e. , tensor) data representation for genus-zero 3D shapes is devised. It is based on the observation that complicated shapes can be well represented by multiple parameterizations (charts), each focusing on a different ...
journal
10.1145/3272127.3275052
1806.02143
title_snapshot
10.1145/3272127.3275095
Hybrid grains: adaptive coupling of discrete and continuum simulations of granular media
https://doi.org/10.1145/3272127.3275095
[ "Yonghao Yue", "Breannan Smith", "Peter Yichen Chen", "Maytee Chantharayukhonthorn", "Ken Kamrin", "Eitan Grinspun" ]
We propose a technique to simulate granular materials that exploits the dual strengths of discrete and continuum treatments. Discrete element simulations provide unmatched levels of detail and generality, but prove excessively costly when applied to large scale systems. Continuum approaches are computationally tractabl...
journal
10.1145/3272127.3275095
null
null
10.1145/3272127.3275009
Learning to group and label fine-grained shape components
https://doi.org/10.1145/3272127.3275009
[ "Xiaogang Wang", "Bin Zhou", "Haiyue Fang", "Xiaowu Chen", "Qinping Zhao", "Kai Xu" ]
A majority of stock 3D models in modern shape repositories are assembled with many fine-grained components. The main cause of such data form is the component-wise modeling process widely practiced by human modelers. These modeling components thus inherently reflect some function-based shape decomposition the artist had...
journal
10.1145/3272127.3275009
1809.05050
title_snapshot
10.1145/3272127.3275072
Layered fields for natural tessellations on surfaces
https://doi.org/10.1145/3272127.3275072
[ "Rhaleb Zayer", "Daniel Mlakar", "Markus Steinberger", "Hans-Peter Seidel" ]
Mimicking natural tessellation patterns is a fascinating multi-disciplinary problem. Geometric methods aiming at reproducing such partitions on surface meshes are commonly based on the Voronoi model and its variants, and are often faced with challenging issues such as metric estimation, geometric, topological complicat...
journal
10.1145/3272127.3275072
1804.09152
title_snapshot
10.1145/3272127.3275084
Deep blending for free-viewpoint image-based rendering
https://doi.org/10.1145/3272127.3275084
[ "Peter Hedman", "Julien Philip", "True Price", "Jan-Michael Frahm", "George Drettakis", "Gabriel Brostow" ]
Free-viewpoint image-based rendering (IBR) is a standing challenge. IBR methods combine warped versions of input photos to synthesize a novel view. The image quality of this combination is directly affected by geometric inaccuracies of multi-view stereo (MVS) reconstruction and by view- and image-dependent effects that...
journal
10.1145/3272127.3275084
null
null
10.1145/3272127.3275007
Canonical Möbius subdivision
https://doi.org/10.1145/3272127.3275007
[ "Amir Vaxman", "Christian Müller", "Ofir Weber" ]
We present a novel framework for creating Möbius-invariant subdivision operators with a simple conversion of existing linear subdivision operators. By doing so, we create a wide variety of subdivision surfaces that have properties derived from Möbius geometry; namely, reproducing spheres, circular arcs, and Möbius regu...
journal
10.1145/3272127.3275007
null
null
10.1145/3272127.3275109
Differentiable Monte Carlo ray tracing through edge sampling
https://doi.org/10.1145/3272127.3275109
[ "Tzu-Mao Li", "Miika Aittala", "Frédo Durand", "Jaakko Lehtinen" ]
Gradient-based methods are becoming increasingly important for computer graphics, machine learning, and computer vision. The ability to compute gradients is crucial to optimization, inverse problems, and deep learning. In rendering, the gradient is required with respect to variables such as camera parameters, light sou...
journal
10.1145/3272127.3275109
null
null
10.1145/3272127.3275079
Crowd space: a predictive crowd analysis technique
https://doi.org/10.1145/3272127.3275079
[ "Ioannis Karamouzas", "Nick Sohre", "Ran Hu", "Stephen J. Guy" ]
Over the last two decades there has been a proliferation of methods for simulating crowds of humans. As the number of different methods and their complexity increases, it becomes increasingly unrealistic to expect researchers and users to keep up with all the possible options and trade-offs. We therefore see the need f...
journal
10.1145/3272127.3275079
null
null
10.1145/3272127.3275069
Holographic near-eye display with expanded eye-box
https://doi.org/10.1145/3272127.3275069
[ "Changwon Jang", "Kiseung Bang", "Gang Li", "Byoungho Lee" ]
Holographic displays have great potential to realize mixed reality by modulating the wavefront of light in a fundamental manner. As a computational display, holographic displays offer a large degree of freedom, such as focus cue generation and vision correction. However, the limited bandwidth of spatial light modulator...
journal
10.1145/3272127.3275069
null
null
10.1145/3272127.3275098
Appearance capture and modeling of human teeth
https://doi.org/10.1145/3272127.3275098
[ "Zdravko Velinov", "Marios Papas", "Derek Bradley", "Paulo Gotardo", "Parsa Mirdehghan", "Steve Marschner", "Jan Novák", "Thabo Beeler" ]
Recreating the appearance of humans in virtual environments for the purpose of movie, video game, or other types of production involves the acquisition of a geometric representation of the human body and its scattering parameters which express the interaction between the geometry and light propagated throughout the sce...
journal
10.1145/3272127.3275098
null
null
10.1145/3272127.3275054
Efficient palette-based decomposition and recoloring of images via RGBXY-space geometry
https://doi.org/10.1145/3272127.3275054
[ "Jianchao Tan", "Jose Echevarria", "Yotam Gingold" ]
We introduce an extremely scalable and efficient yet simple palette-based image decomposition algorithm. Given an RGB image and set of palette colors, our algorithm decomposes the image into a set of additive mixing layers, each of which corresponds to a palette color applied with varying weight. Our approach is based ...
journal
10.1145/3272127.3275054
null
null
10.1145/3272127.3275034
DESIA: a general framework for designing interlocking assemblies
https://doi.org/10.1145/3272127.3275034
[ "Ziqi Wang", "Peng Song", "Mark Pauly" ]
Interlocking assemblies have a long history in the design of puzzles, furniture, architecture, and other complex geometric structures. The key defining property of interlocking assemblies is that all component parts are immobilized by their geometric arrangement, preventing the assembly from falling apart. Computer gra...
journal
10.1145/3272127.3275034
null
null
10.1145/3272127.3275047
P aparazzi: surface editing by way of multi-view image processing
https://doi.org/10.1145/3272127.3275047
[ "Hsueh-Ti Derek Liu", "Michael Tao", "Alec Jacobson" ]
The image processing pipeline boasts a wide variety of complex filters and effects. Translating an individual effect to operate on 3D surface geometry inevitably results in a bespoke algorithm. Instead, we propose a general-purpose back-end optimization that allows users to edit an input 3D surface by simply selecting ...
journal
10.1145/3272127.3275047
null
null
10.1145/3272127.3275065
FrankenGAN: guided detail synthesis for building mass models using style-synchonized GANs
https://doi.org/10.1145/3272127.3275065
[ "Tom Kelly", "Paul Guerrero", "Anthony Steed", "Peter Wonka", "Niloy J. Mitra" ]
Coarse building mass models are now routinely generated at scales ranging from individual buildings to whole cities. Such models can be abstracted from raw measurements, generated procedurally, or created manually. However, these models typically lack any meaningful geometric or texture details, making them unsuitable ...
journal
10.1145/3272127.3275065
1806.07179
title_snapshot
10.1145/3272127.3275031
A system for acquiring, processing, and rendering panoramic light field stills for virtual reality
https://doi.org/10.1145/3272127.3275031
[ "Ryan S. Overbeck", "Daniel Erickson", "Daniel Evangelakos", "Matt Pharr", "Paul Debevec" ]
We present a system for acquiring, processing, and rendering panoramic light field still photography for display in Virtual Reality (VR). We acquire spherical light field datasets with two novel light field camera rigs designed for portable and efficient light field acquisition. We introduce a novel real-time light fie...
journal
10.1145/3272127.3275031
1810.08860
title_snapshot
10.1145/3272127.3275010
Aerial path planning for urban scene reconstruction: a continuous optimization method and benchmark
https://doi.org/10.1145/3272127.3275010
[ "Neil Smith", "Nils Moehrle", "Michael Goesele", "Wolfgang Heidrich" ]
Small unmanned aerial vehicles (UAVs) are ideal capturing devices for high-resolution urban 3D reconstructions using multi-view stereo. Nevertheless, practical considerations such as safety usually mean that access to the scan target is often only available for a short amount of time, especially in urban environments. ...
journal
10.1145/3272127.3275010
null
null
10.1145/3272127.3275011
Accurate dissipative forces in optimization integrators
https://doi.org/10.1145/3272127.3275011
[ "George E. Brown", "Matthew Overby", "Zahra Forootaninia", "Rahul Narain" ]
We propose a method for accurately simulating dissipative forces in deformable bodies when using optimization-based integrators. We represent such forces using dissipation functions which may be nonlinear in both positions and velocities, enabling us to model a range of dissipative effects including Coulomb friction, R...
journal
10.1145/3272127.3275011
null
null
10.1145/3272127.3275021
Inexact descent methods for elastic parameter optimization
https://doi.org/10.1145/3272127.3275021
[ "Guowei Yan", "Wei Li", "Ruigang Yang", "Huamin Wang" ]
Elastic parameter optimization has revealed its importance in 3D modeling, virtual reality, and additive manufacturing in recent years. Unfortunately, it is known to be computationally expensive, especially if there are many parameters and data samples. To address this challenge, we propose to introduce the inexactness...
journal
10.1145/3272127.3275021
null
null
10.1145/3272127.3275101
Deep incremental learning for efficient high-fidelity face tracking
https://doi.org/10.1145/3272127.3275101
[ "Chenglei Wu", "Takaaki Shiratori", "Yaser Sheikh" ]
In this paper, we present an incremental learning framework for efficient and accurate facial performance tracking. Our approach is to alternate the modeling step, which takes tracked meshes and texture maps to train our deep learning-based statistical model, and the tracking step, which takes predictions of geometry a...
journal
10.1145/3272127.3275101
null
null
10.1145/3272127.3275057
Deep multispectral painting reproduction via multi-layer, custom-ink printing
https://doi.org/10.1145/3272127.3275057
[ "Liang Shi", "Vahid Babaei", "Changil Kim", "Michael Foshey", "Yuanming Hu", "Pitchaya Sitthi-Amorn", "Szymon Rusinkiewicz", "Wojciech Matusik" ]
We propose a workflow for spectral reproduction of paintings, which captures a painting's spectral color, invariant to illumination, and reproduces it using multi-material 3D printing. We take advantage of the current 3D printers' capabilities of combining highly concentrated inks with a large number of layers, to expa...
journal
10.1145/3272127.3275057
null
null
10.1145/3272127.3275038
Deep motifs and motion signatures
https://doi.org/10.1145/3272127.3275038
[ "Andreas Aristidou", "Daniel Cohen-Or", "Jessica K. Hodgins", "Yiorgos Chrysanthou", "Ariel Shamir" ]
Many analysis tasks for human motion rely on high-level similarity between sequences of motions, that are not an exact matches in joint angles, timing, or ordering of actions. Even the same movements performed by the same person can vary in duration and speed. Similar motions are characterized by similar sets of action...
journal
10.1145/3272127.3275038
null
null
10.1145/3272127.3275068
Delaunay mesh simplification with differential evolution
https://doi.org/10.1145/3272127.3275068
[ "Ran Yi", "Yong-Jin Liu", "Ying He" ]
Delaunay meshes (DM) are a special type of manifold triangle meshes --- where the local Delaunay condition holds everywhere --- and find important applications in digital geometry processing. This paper addresses the general DM simplification problem: given an arbitrary manifold triangle mesh M with n vertices and the ...
journal
10.1145/3272127.3275068
null
null
10.1145/3272127.3275044
GPU optimization of material point methods
https://doi.org/10.1145/3272127.3275044
[ "Ming Gao", "Xinlei Wang", "Kui Wu", "Andre Pradhana", "Eftychios Sifakis", "Cem Yuksel", "Chenfanfu Jiang" ]
The Material Point Method (MPM) has been shown to facilitate effective simulations of physically complex and topologically challenging materials, with a wealth of emerging applications in computational engineering and visual computing. Borne out of the extreme importance of regularity, MPM is given attractive paralleli...
journal
10.1145/3272127.3275044
null
null
10.1145/3272127.3275042
OptCuts: joint optimization of surface cuts and parameterization
https://doi.org/10.1145/3272127.3275042
[ "Minchen Li", "Danny M. Kaufman", "Vladimir G. Kim", "Justin Solomon", "Alla Sheffer" ]
Low-distortion mapping of three-dimensional surfaces to the plane is a critical problem in geometry processing. The intrinsic distortion introduced by these UV mappings is highly dependent on the choice of surface cuts that form seamlines which break mapping continuity. Parameterization applications typically require U...
journal
10.1145/3272127.3275042
null
null
10.1145/3272127.3275005
I-cloth: incremental collision handling for GPU-based interactive cloth simulation
https://doi.org/10.1145/3272127.3275005
[ "Min Tang", "tongtong wang", "Zhongyuan Liu", "Ruofeng Tong", "Dinesh Manocha" ]
We present an incremental collision handling algorithm for GPU-based interactive cloth simulation. Our approach exploits the spatial and temporal coherence between successive iterations of an optimization-based solver for collision response computation. We present an incremental continuous collision detection algorithm...
journal
10.1145/3272127.3275005
null
null
10.1145/3272127.3275071
Interactive character animation by learning multi-objective control
https://doi.org/10.1145/3272127.3275071
[ "Kyungho Lee", "Seyoung Lee", "Jehee Lee" ]
We present an approach that learns to act from raw motion data for interactive character animation. Our motion generator takes a continuous stream of control inputs and generates the character's motion in an online manner. The key insight is modeling rich connections between a multitude of control objectives and a larg...
journal
10.1145/3272127.3275071
null
null
10.1145/3272127.3275019
3D hair synthesis using volumetric variational autoencoders
https://doi.org/10.1145/3272127.3275019
[ "Shunsuke Saito", "Liwen Hu", "Chongyang Ma", "Hikaru Ibayashi", "Linjie Luo", "Hao Li" ]
Recent advances in single-view 3D hair digitization have made the creation of high-quality CG characters scalable and accessible to end-users, enabling new forms of personalized VR and gaming experiences. To handle the complexity and variety of hair structures, most cutting-edge techniques rely on the successful retrie...
journal
10.1145/3272127.3275019
null
null
10.1145/3272127.3275078
Multiple scattering from distributions of specular v-grooves
https://doi.org/10.1145/3272127.3275078
[ "Feng Xie", "Pat Hanrahan" ]
Microfacet-based reflection models are the most common way to represent reflection from rough surfaces. However, a major current limitation of these models is that they only account for single scattering. Unfortunately, single scattering models do not preserve energy. In this paper, we develop a microfacet BRDF for spe...
journal
10.1145/3272127.3275078
null
null
10.1145/3272127.3275056
Light in power: a general and parameter-free algorithm for caustic design
https://doi.org/10.1145/3272127.3275056
[ "Jocelyn Meyron", "Quentin Mérigot", "Boris Thibert" ]
We present in this paper a generic and parameter-free algorithm to efficiently build a wide variety of optical components, such as mirrors or lenses, that satisfy some light energy constraints. In all of our problems, one is given a collimated or point light source and a desired illumination after reflection or refract...
journal
10.1145/3272127.3275056
1708.04820
title_snapshot
10.1145/3272127.3275045
MIDAS projection: markerless and modelless dynamic projection mapping for material representation
https://doi.org/10.1145/3272127.3275045
[ "Leo Miyashita", "Yoshihiro Watanabe", "Masatoshi Ishikawa" ]
The visual appearance of an object can be disguised by projecting virtual shading as if overwriting the material. However, conventional projection-mapping methods depend on markers on a target or a model of the target shape, which limits the types of targets and the visual quality. In this paper, we focus on the fact t...
journal
10.1145/3272127.3275045
null
null
10.1145/3272127.3275088
The shape space of discrete orthogonal geodesic nets
https://doi.org/10.1145/3272127.3275088
[ "Michael Rabinovich", "Tim Hoffmann", "Olga Sorkine-Hornung" ]
Discrete orthogonal geodesic nets (DOGs) are a quad mesh analogue of developable surfaces. In this work we study continuous deformations on these discrete objects. Our main theoretical contribution is the characterization of the shape space of DOGs for a given net connectivity. We show that generally, this space is loc...
journal
10.1145/3272127.3275088
null
null
10.1145/3272127.3275104
Relighting humans: occlusion-aware inverse rendering for full-body human images
https://doi.org/10.1145/3272127.3275104
[ "Yoshihiro Kanamori", "Yuki Endo" ]
Relighting of human images has various applications in image synthesis. For relighting, we must infer albedo, shape, and illumination from a human portrait. Previous techniques rely on human faces for this inference, based on spherical harmonics (SH) lighting. However, because they often ignore light occlusion, inferre...
journal
10.1145/3272127.3275104
1908.02714
title_snapshot
10.1145/3272127.3275048
Learning to dress: synthesizing human dressing motion via deep reinforcement learning
https://doi.org/10.1145/3272127.3275048
[ "Alexander Clegg", "Wenhao Yu", "Jie Tan", "C. Karen Liu", "Greg Turk" ]
Creating animation of a character putting on clothing is challenging due to the complex interactions between the character and the simulated garment. We take a model-free deep reinforcement learning (deepRL) approach to automatically discovering robust dressing control policies represented by neural networks. While dee...
journal
10.1145/3272127.3275048
null
null
10.1145/3272127.3275100
Ambient sound propagation
https://doi.org/10.1145/3272127.3275100
[ "Zechen Zhang", "Nikunj Raghuvanshi", "John Snyder", "Steve Marschner" ]
Ambient sounds arise from a massive superposition of chaotic events distributed over a large area or volume, such as waves breaking on a beach or rain hitting the ground. The directionality and loudness of these sounds as they propagate in complex 3D scenes vary with listener location, providing cues that distinguish i...
journal
10.1145/3272127.3275100
null
null
10.1145/3272127.3275090
Two-stage sketch colorization
https://doi.org/10.1145/3272127.3275090
[ "Lvmin Zhang", "Chengze Li", "Tien-Tsin Wong", "Yi Ji", "Chunping Liu" ]
Sketch or line art colorization is a research field with significant market demand. Different from photo colorization which strongly relies on texture information, sketch colorization is more challenging as sketches may not have texture. Even worse, color, texture, and gradient have to be generated from the abstract sk...
journal
10.1145/3272127.3275090
null
null
10.1145/3272127.3275043
Warp-guided GANs for single-photo facial animation
https://doi.org/10.1145/3272127.3275043
[ "Jiahao Geng", "Tianjia Shao", "Youyi Zheng", "Yanlin Weng", "Kun Zhou" ]
This paper introduces a novel method for realtime portrait animation in a single photo. Our method requires only a single portrait photo and a set of facial landmarks derived from a driving source (e.g., a photo or a video sequence), and generates an animated image with rich facial details. The core of our method is a ...
journal
10.1145/3272127.3275043
null
null
10.1145/3272127.3275050
Adaptive O-CNN: a patch-based deep representation of 3D shapes
https://doi.org/10.1145/3272127.3275050
[ "Peng-Shuai Wang", "Chun-Yu Sun", "Yang Liu", "Xin Tong" ]
We present an Adaptive Octree-based Convolutional Neural Network (Adaptive O-CNN) for efficient 3D shape encoding and decoding. Different from volumetric-based or octree-based CNN methods that represent a 3D shape with voxels in the same resolution, our method represents a 3D shape adaptively with octants at different ...
journal
10.1145/3272127.3275050
1809.07917
title_snapshot
10.1145/3272127.3275106
Geometry-aware metropolis light transport
https://doi.org/10.1145/3272127.3275106
[ "Hisanari Otsu", "Johannes Hanika", "Toshiya Hachisuka", "Carsten Dachsbacher" ]
Markov chain Monte Carlo (MCMC) rendering utilizes a sequence of correlated path samples which is obtained by iteratively mutating the current state to the next. The efficiency of MCMC rendering depends on how well the mutation strategy is designed to adapt to the local structure of the state space. We present a novel ...
journal
10.1145/3272127.3275106
null
null
10.1145/3272127.3275039
Modeling hair from an RGB-D camera
https://doi.org/10.1145/3272127.3275039
[ "Meng Zhang", "Pan Wu", "Hongzhi Wu", "Yanlin Weng", "Youyi Zheng", "Kun Zhou" ]
Creating realistic 3D hairs that closely match the real-world inputs remains challenging. With the increasing popularity of lightweight depth cameras featured in devices such as iPhone X, Intel RealSense and DJI drones, depth cues can be very helpful in consumer applications, for example, the Animated Emoji. In this pa...
journal
10.1145/3272127.3275039
null
null
10.1145/3272127.3275097
C urve F usion: reconstructing thin structures from RGBD sequences
https://doi.org/10.1145/3272127.3275097
[ "Lingjie Liu", "Nenglun Chen", "Duygu Ceylan", "Christian Theobalt", "Wenping Wang", "Niloy J. Mitra" ]
We introduce C urve F usion , the first approach for high quality scanning of thin structures at interactive rates using a handheld RGBD camera. Thin filament-like structures are mathematically just 1D curves embedded in R 3 , and integration-based reconstruction works best when depth sequences (from the thin structure...
journal
10.1145/3272127.3275097
2107.05284
title_judge
10.1145/3272127.3275063
Mean value coordinates for quad cages in 3D
https://doi.org/10.1145/3272127.3275063
[ "Jean-Marc Thiery", "Pooran Memari", "Tamy Boubekeur" ]
Space coordinates offer an elegant, scalable and versatile framework to propagate (multi-)scalar functions from the boundary vertices of a 3-manifold, often called a cage , within its volume. These generalizations of the barycentric coordinate system have progressively expanded the range of eligible cages to triangle a...
journal
10.1145/3272127.3275063
null
null
10.1145/3272127.3275080
Invertible grayscale
https://doi.org/10.1145/3272127.3275080
[ "Menghan Xia", "Xueting Liu", "Tien-Tsin Wong" ]
Once a color image is converted to grayscale, it is a common belief that the original color cannot be fully restored, even with the state-of-the-art colorization methods. In this paper, we propose an innovative method to synthesize invertible grayscale. It is a grayscale image that can fully restore its original color....
journal
10.1145/3272127.3275080
null
null
10.1145/3272127.3275073
Practical dynamic facial appearance modeling and acquisition
https://doi.org/10.1145/3272127.3275073
[ "Paulo Gotardo", "Jérémy Riviere", "Derek Bradley", "Abhijeet Ghosh", "Thabo Beeler" ]
We present a method to acquire dynamic properties of facial skin appearance, including dynamic diffuse albedo encoding blood flow, dynamic specular intensity, and per-frame high resolution normal maps for a facial performance sequence. The method reconstructs these maps from a purely passive multi-camera setup, without...
journal
10.1145/3272127.3275073
null
null
10.1145/3272127.3275049
Fabricable eulerian wires for 3D shape abstraction
https://doi.org/10.1145/3272127.3275049
[ "Wallace Lira", "Chi-Wing Fu", "Hao Zhang" ]
We present a fully automatic method that finds a small number of machine fabricable wires with minimal overlap to reproduce a wire sculpture design as a 3D shape abstraction. Importantly, we consider non-planar wires, which can be fabricated by a wire bending machine, to enable efficient construction of complex 3D scul...
journal
10.1145/3272127.3275049
null
null
10.1145/3272127.3275062
The need 4 speed in real-time dense visual tracking
https://doi.org/10.1145/3272127.3275062
[ "Adarsh Kowdle", "Christoph Rhemann", "Sean Fanello", "Andrea Tagliasacchi", "Jonathan Taylor", "Philip Davidson", "Mingsong Dou", "Kaiwen Guo", "Cem Keskin", "Sameh Khamis", "David Kim", "Danhang Tang", "Vladimir Tankovich", "Julien Valentin", "Shahram Izadi" ]
The advent of consumer depth cameras has incited the development of a new cohort of algorithms tackling challenging computer vision problems. The primary reason is that depth provides direct geometric information that is largely invariant to texture and illumination. As such, substantial progress has been made in human...
journal
10.1145/3272127.3275062
null
null
10.1145/3272127.3275110
Monte Carlo convolution for learning on non-uniformly sampled point clouds
https://doi.org/10.1145/3272127.3275110
[ "Pedro Hermosilla", "Tobias Ritschel", "Pere-Pau Vázquez", "Àlvar Vinacua", "Timo Ropinski" ]
Deep learning systems extensively use convolution operations to process input data. Though convolution is clearly defined for structured data such as 2D images or 3D volumes, this is not true for other data types such as sparse point clouds. Previous techniques have developed approximations to convolutions for restrict...
journal
10.1145/3272127.3275110
1806.01759
title_snapshot
10.1145/3272127.3275037
There are 174 subdivisions of the hexahedron into tetrahedra
https://doi.org/10.1145/3272127.3275037
[ "Jeanne Pellerin", "Kilian Verhetsel", "Jean-FranÇois Remacle" ]
This article answers an important theoretical question: How many different subdivisions of the hexahedron into tetrahedra are there? It is well known that the cube has five subdivisions into 6 tetrahedra and one subdivision into 5 tetrahedra. However, all hexahedra are not cubes and moving the vertex positions increase...
journal
10.1145/3272127.3275037
1801.01288
title_snapshot
10.1145/3272127.3275085
Set-in-stone: worst-case optimization of structures weak in tension
https://doi.org/10.1145/3272127.3275085
[ "Christian Schumacher", "Jonas Zehnder", "Moritz Bächer" ]
Large-scale binder jetting provides a promising alternative to manual sculpting of sandstone. The weak build material, however, severely limits its use in architectural ornamentation. We propose a structural optimization that jointly optimizes an ornament's strength-to-weight ratio and balance under self-weight, therma...
journal
10.1145/3272127.3275085
null
null
10.1145/3272127.3275092
Meshless voronoi on the GPU
https://doi.org/10.1145/3272127.3275092
[ "Nicolas Ray", "Dmitry Sokolov", "Sylvain Lefebvre", "Bruno Lévy" ]
We propose a GPU algorithm that computes a 3 D Voronoi diagram. Our algorithm is tailored for applications that solely make use of the geometry of the Voronoi cells, such as Lloyd's relaxation used in meshing, or some numerical schemes used in fluid simulations and astrophysics. Since these applications only require th...
journal
10.1145/3272127.3275092
null
null
10.1145/3272127.3275024
Semantic object reconstruction via casual handheld scanning
https://doi.org/10.1145/3272127.3275024
[ "Ruizhen Hu", "Cheng Wen", "Oliver Van Kaick", "Luanmin Chen", "Di Lin", "Daniel Cohen-Or", "Hui Huang" ]
We introduce a learning-based method to reconstruct objects acquired in a casual handheld scanning setting with a depth camera. Our method is based on two core components. First, a deep network that provides a semantic segmentation and labeling of the frames of an input RGBD sequence. Second, an alignment and reconstru...
journal
10.1145/3272127.3275024
null
null
10.1145/3272127.3275025
Global-to-local generative model for 3D shapes
https://doi.org/10.1145/3272127.3275025
[ "Hao Wang", "Nadav Schor", "Ruizhen Hu", "Haibin Huang", "Daniel Cohen-Or", "Hui Huang" ]
We introduce a generative model for 3D man-made shapes. The presented method takes a global-to-local (G2L) approach. An adversarial network (GAN) is built first to construct the overall structure of the shape, segmented and labeled into parts. A novel conditional auto-encoder (AE) is then augmented to act as a part-lev...
journal
10.1145/3272127.3275025
null
null
10.1145/3272127.3275029
Approximate convex decomposition and transfer for animated meshes
https://doi.org/10.1145/3272127.3275029
[ "Daniel Thul", "L'ubor Ladický", "Sohyeon Jeong", "Marc Pollefeys" ]
Many geometric quantities can be computed efficiently for convex meshes. For general meshes, methods for approximate convex decomposition have been developed that decompose a static, non-convex object into a small set of approximately convex parts. The convex hulls of those parts can then be used as a piecewise convex ...
journal
10.1145/3272127.3275029
null
null
10.1145/3272127.3275083
Fast depth densification for occlusion-aware augmented reality
https://doi.org/10.1145/3272127.3275083
[ "Aleksander Holynski", "Johannes Kopf" ]
Current AR systems only track sparse geometric features but do not compute depth for all pixels. For this reason, most AR effects are pure overlays that can never be occluded by real objects. We present a novel algorithm that propagates sparse depth to every pixel in near realtime. The produced depth maps are spatio-te...
journal
10.1145/3272127.3275083
null
null
10.1145/3272127.3275107
Factor once: reusing cholesky factorizations on sub-meshes
https://doi.org/10.1145/3272127.3275107
[ "Philipp Herholz", "Marc Alexa" ]
A common operation in geometry processing is solving symmetric and positive semi-definite systems on a subset of a mesh, with conditions for the vertices at the boundary of the region. This is commonly done by setting up the linear system for the sub-mesh, factorizing the system (potentially applying preordering to imp...
journal
10.1145/3272127.3275107
null
null
10.1145/3272127.3275032
DeepFocus: learned image synthesis for computational displays
https://doi.org/10.1145/3272127.3275032
[ "Lei Xiao", "Anton Kaplanyan", "Alexander Fix", "Matthew Chapman", "Douglas Lanman" ]
Addressing vergence-accommodation conflict in head-mounted displays (HMDs) requires resolving two interrelated problems. First, the hardware must support viewing sharp imagery over the full accommodation range of the user. Second, HMDs should accurately reproduce retinal defocus blur to correctly drive accommodation. A...
journal
10.1145/3272127.3275032
null
null
10.1145/3272127.3275093
Stabilized real-time face tracking via a learned dynamic rigidity prior
https://doi.org/10.1145/3272127.3275093
[ "Chen Cao", "Menglei Chai", "Oliver Woodford", "Linjie Luo" ]
Despite the popularity of real-time monocular face tracking systems in many successful applications, one overlooked problem with these systems is rigid instability. It occurs when the input facial motion can be explained by either head pose change or facial expression change, creating ambiguities that often lead to jit...
journal
10.1145/3272127.3275093
null
null
10.1145/3272127.3275055
Learning to reconstruct shape and spatially-varying reflectance from a single image
https://doi.org/10.1145/3272127.3275055
[ "Zhengqin Li", "Zexiang Xu", "Ravi Ramamoorthi", "Kalyan Sunkavalli", "Manmohan Chandraker" ]
Reconstructing shape and reflectance properties from images is a highly under-constrained problem, and has previously been addressed by using specialized hardware to capture calibrated data or by assuming known (or highly constrained) shape or reflectance. In contrast, we demonstrate that we can recover non-Lambertian,...
journal
10.1145/3272127.3275055
null
null
10.1145/3272127.3275035
Language-driven synthesis of 3D scenes from scene databases
https://doi.org/10.1145/3272127.3275035
[ "Rui Ma", "Akshay Gadi Patil", "Matthew Fisher", "Manyi Li", "Sören Pirk", "Binh-Son Hua", "Sai-Kit Yeung", "Xin Tong", "Leonidas Guibas", "Hao Zhang" ]
We introduce a novel framework for using natural language to generate and edit 3D indoor scenes, harnessing scene semantics and text-scene grounding knowledge learned from large annotated 3D scene databases. The advantage of natural language editing interfaces is strongest when performing semantic operations at the sub...
journal
10.1145/3272127.3275035
null
null
10.1145/3272127.3275064
Dynamical optimal transport on discrete surfaces
https://doi.org/10.1145/3272127.3275064
[ "Hugo Lavenant", "Sebastian Claici", "Edward Chien", "Justin Solomon" ]
We propose a technique for interpolating between probability distributions on discrete surfaces, based on the theory of optimal transport. Unlike previous attempts that use linear programming, our method is based on a dynamical formulation of quadratic optimal transport proposed for flat domains by Benamou and Brenier ...
journal
10.1145/3272127.3275064
1809.07083
title_snapshot
10.1145/3272127.3275075
paGAN: real-time avatars using dynamic textures
https://doi.org/10.1145/3272127.3275075
[ "Koki Nagano", "Jaewoo Seo", "Jun Xing", "Lingyu Wei", "Zimo Li", "Shunsuke Saito", "Aviral Agarwal", "Jens Fursund", "Hao Li" ]
With the rising interest in personalized VR and gaming experiences comes the need to create high quality 3D avatars that are both low-cost and variegated. Due to this, building dynamic avatars from a single unconstrained input image is becoming a popular application. While previous techniques that attempt this require ...
journal
10.1145/3272127.3275075
null
null
10.1145/3272127.3275108
Deep inertial poser: learning to reconstruct human pose from sparse inertial measurements in real time
https://doi.org/10.1145/3272127.3275108
[ "Yinghao Huang", "Manuel Kaufmann", "Emre Aksan", "Michael J. Black", "Otmar Hilliges", "Gerard Pons-Moll" ]
We demonstrate a novel deep neural network capable of reconstructing human full body pose in real-time from 6 Inertial Measurement Units (IMUs) worn on the user's body. In doing so, we address several difficult challenges. First, the problem is severely under-constrained as multiple pose parameters produce the same IMU...
journal
10.1145/3272127.3275108
1810.04703
title_snapshot
10.1145/3272127.3275081
Image smoothing via unsupervised learning
https://doi.org/10.1145/3272127.3275081
[ "Qingnan Fan", "Jiaolong Yang", "David Wipf", "Baoquan Chen", "Xin Tong" ]
Image smoothing represents a fundamental component of many disparate computer vision and graphics applications. In this paper, we present a unified unsupervised (label-free) learning framework that facilitates generating flexible and high-quality smoothing effects by directly learning from data using deep convolutional...
journal
10.1145/3272127.3275081
1811.02804
title_snapshot
10.1145/3272127.3275089
Bend-it: design and fabrication of kinetic wire characters
https://doi.org/10.1145/3272127.3275089
[ "Hongyi Xu", "Espen Knoop", "Stelian Coros", "Moritz Bächer" ]
Elastically deforming wire structures are lightweight, durable, and can be bent within minutes using CNC bending machines. We present a computational technique for the design of kinetic wire characters, tailored for fabrication on consumer-grade hardware. Our technique takes as input a network of curves or a skeletal a...
journal
10.1145/3272127.3275089
null
null
10.1145/3272127.3275014
SFV: reinforcement learning of physical skills from videos
https://doi.org/10.1145/3272127.3275014
[ "Xue Bin Peng", "Angjoo Kanazawa", "Jitendra Malik", "Pieter Abbeel", "Sergey Levine" ]
Data-driven character animation based on motion capture can produce highly naturalistic behaviors and, when combined with physics simulation, can provide for natural procedural responses to physical perturbations, environmental changes, and morphological discrepancies. Motion capture remains the most popular source of ...
journal
10.1145/3272127.3275014
1810.03599
title_snapshot
10.1145/3272127.3275082
Deep unsupervised pixelization
https://doi.org/10.1145/3272127.3275082
[ "Chu Han", "Qiang Wen", "Shengfeng He", "Qianshu Zhu", "Yinjie Tan", "Guoqiang Han", "Tien-Tsin Wong" ]
In this paper, we present a novel unsupervised learning method for pixelization. Due to the difficulty in creating pixel art, preparing the paired training data for supervised learning is impractical. Instead, we propose an unsupervised learning framework to circumvent such difficulty. We leverage the dual nature of th...
journal
10.1145/3272127.3275082
null
null
10.1145/3272127.3275091
Instant transport maps on 2D grids
https://doi.org/10.1145/3272127.3275091
[ "Georges Nader", "Gael Guennebaud" ]
In this paper, we introduce a novel and extremely fast algorithm to compute continuous transport maps between 2D probability densities discretized on uniform grids. The core of our method is a novel iterative solver computing the L 2 optimal transport map from a grid to the uniform density in the 2D Euclidean plane. A ...
journal
10.1145/3272127.3275091
null
null
10.1145/3272127.3275067
Decoupling simulation accuracy from mesh quality
https://doi.org/10.1145/3272127.3275067
[ "Teseo Schneider", "Yixin Hu", "Jérémie Dumas", "Xifeng Gao", "Daniele Panozzo", "Denis Zorin" ]
For a given PDE problem, three main factors affect the accuracy of FEM solutions: basis order, mesh resolution, and mesh element quality. The first two factors are easy to control, while controlling element shape quality is a challenge, with fundamental limitations on what can be achieved. We propose to use p -refineme...
journal
10.1145/3272127.3275067
null
null
10.1145/3272127.3275070
Multi-view wire art
https://doi.org/10.1145/3272127.3275070
[ "Kai-Wen Hsiao", "Jia-Bin Huang", "Hung-Kuo Chu" ]
Wire art is the creation of three-dimensional sculptural art using wire strands. As the 2D projection of a 3D wire sculpture forms line drawing patterns, it is possible to craft multi-view wire sculpture art --- a static sculpture with multiple (potentially very different) interpretations when perceived at different vi...
journal
10.1145/3272127.3275070
null
null
10.1145/3272127.3275018
Simultaneous acquisition of polarimetric SVBRDF and normals
https://doi.org/10.1145/3272127.3275018
[ "Seung-Hwan Baek", "Daniel S. Jeon", "Xin Tong", "Min H. Kim" ]
Capturing appearance often requires dense sampling in light-view space, which is often achieved in specialized, expensive hardware setups. With the aim of realizing a compact acquisition setup without multiple angular samples of light and view, we sought to leverage an alternative optical property of light, polarizatio...
journal
10.1145/3272127.3275018
null
null
10.1145/3272127.3275087
Shading atlas streaming
https://doi.org/10.1145/3272127.3275087
[ "Joerg H. Mueller", "Philip Voglreiter", "Mark Dokter", "Thomas Neff", "Mina Makar", "Markus Steinberger", "Dieter Schmalstieg" ]
Streaming high quality rendering for virtual reality applications requires minimizing perceived latency. We introduce Shading Atlas Streaming (SAS), a novel object-space rendering framework suitable for streaming virtual reality content. SAS decouples server-side shading from client-side rendering, allowing the client ...
journal
10.1145/3272127.3275087
null
null
10.1145/3272127.3275076
FlexMaps: computational design of flat flexible shells for shaping 3D objects
https://doi.org/10.1145/3272127.3275076
[ "Luigi Malomo", "Jesús Pérez", "Emmanuel Iarussi", "Nico Pietroni", "Eder Miguel", "Paolo Cignoni", "Bernd Bickel" ]
We propose FlexMaps, a novel framework for fabricating smooth shapes out of flat, flexible panels with tailored mechanical properties. We start by mapping the 3D surface onto a 2D domain as in traditional UV mapping to design a set of deformable flat panels called FlexMaps. For these panels, we design and obtain specif...
journal
10.1145/3272127.3275076
null
null
10.1145/3272127.3275099
LookinGood: enhancing performance capture with real-time neural re-rendering
https://doi.org/10.1145/3272127.3275099
[ "Ricardo Martin-Brualla", "Rohit Pandey", "Shuoran Yang", "Pavel Pidlypenskyi", "Jonathan Taylor", "Julien Valentin", "Sameh Khamis", "Philip Davidson", "Anastasia Tkach", "Peter Lincoln", "Adarsh Kowdle", "Christoph Rhemann", "Dan B Goldman", "Cem Keskin", "Steve Seitz", "Shahram Izad...
Motivated by augmented and virtual reality applications such as telepresence, there has been a recent focus in real-time performance capture of humans under motion. However, given the real-time constraint, these systems often suffer from artifacts in geometry and texture such as holes and noise in the final rendering, ...
journal
10.1145/3272127.3275099
1811.05029
title_snapshot
10.1145/3272127.3275053
Position-free monte carlo simulation for arbitrary layered BSDFs
https://doi.org/10.1145/3272127.3275053
[ "Yu Guo", "Miloš Hašan", "Shuang Zhao" ]
Real-world materials are often layered: metallic paints, biological tissues, and many more. Variation in the interface and volumetric scattering properties of the layers leads to a rich diversity of material appearances from anisotropic highlights to complex textures and relief patterns. However, simulating light-layer...
journal
10.1145/3272127.3275053
null
null
10.1145/3272127.3275061
Construction and fabrication of reversible shape transforms
https://doi.org/10.1145/3272127.3275061
[ "Shuhua Li", "Ali Mahdavi-Amiri", "Ruizhen Hu", "Han Liu", "Changqing Zou", "Oliver Van Kaick", "Xiuping Liu", "Hui Huang", "Hao Zhang" ]
We study a new and elegant instance of geometric dissection of 2D shapes: reversible hinged dissection, which corresponds to a dual transform between two shapes where one of them can be dissected in its interior and then inverted inside-out , with hinges on the shape boundary, to reproduce the other shape, and vice ver...
journal
10.1145/3272127.3275061
null
null
10.1145/3272127.3275051
Robust flow-guided neural prediction for sketch-based freeform surface modeling
https://doi.org/10.1145/3272127.3275051
[ "Changjian Li", "Hao Pan", "Yang Liu", "Xin Tong", "Alla Sheffer", "Wenping Wang" ]
Sketching provides an intuitive user interface for communicating free form shapes. While human observers can easily envision the shapes they intend to communicate, replicating this process algorithmically requires resolving numerous ambiguities. Existing sketch-based modeling methods resolve these ambiguities by either...
journal
10.1145/3272127.3275051
null
null
10.1145/3272127.3275017
Practical SVBRDF acquisition of 3D objects with unstructured flash photography
https://doi.org/10.1145/3272127.3275017
[ "Giljoo Nam", "Joo Ho Lee", "Diego Gutierrez", "Min H. Kim" ]
Capturing spatially-varying bidirectional reflectance distribution functions (SVBRDFs) of 3D objects with just a single, hand-held camera (such as an off-the-shelf smartphone or a DSLR camera) is a difficult, open problem. Previous works are either limited to planar geometry, or rely on previously scanned 3D geometry, ...
journal
10.1145/3272127.3275017
null
null
10.1145/3272127.3275027
Deep part induction from articulated object pairs
https://doi.org/10.1145/3272127.3275027
[ "Li Yi", "Haibin Huang", "Difan Liu", "Evangelos Kalogerakis", "Hao Su", "Leonidas Guibas" ]
Object functionality is often expressed through part articulation - as when the two rigid parts of a scissor pivot against each other to perform the cutting function. Such articulations are often similar across objects within the same functional category. In this paper we explore how the observation of different articu...
journal
10.1145/3272127.3275027
1809.07417
title_snapshot
10.1145/3272127.3275105
Interactive design of periodic yarn-level cloth patterns
https://doi.org/10.1145/3272127.3275105
[ "Jonathan Leaf", "Rundong Wu", "Eston Schweickart", "Doug L. James", "Steve Marschner" ]
We describe an interactive design tool for authoring, simulating, and adjusting yarn-level patterns for knitted and woven cloth. To achieve interactive performance for notoriously slow yarn-level simulations, we propose two acceleration schemes: (a) yarn-level periodic boundary conditions that enable the restricted sim...
journal
10.1145/3272127.3275105
null
null
10.1145/3272127.3275026
Connecting measured BRDFs to analytic BRDFs by data-driven diffuse-specular separation
https://doi.org/10.1145/3272127.3275026
[ "Tiancheng Sun", "Henrik Wann Jensen", "Ravi Ramamoorthi" ]
The bidirectional reflectance distribution function (BRDF) is crucial for modeling the appearance of real-world materials. In production rendering, analytic BRDF models are often used to approximate the surface appearance since they are compact and flexible. Measured BRDFs usually have a more realistic appearance, but ...
journal
10.1145/3272127.3275026
null
null
10.1145/3272127.3275013
DeepLens: shallow depth of field from a single image
https://doi.org/10.1145/3272127.3275013
[ "Lijun Wang", "Xiaohui Shen", "Jianming Zhang", "Oliver Wang", "Zhe Lin", "Chih-Yao Hsieh", "Sarah Kong", "Huchuan Lu" ]
We aim to generate high resolution shallow depth-of-field (DoF) images from a single all-in-focus image with controllable focal distance and aperture size. To achieve this, we propose a novel neural network model comprised of a depth prediction module, a lens blur module, and a guided upsampling module. All modules are...
journal
10.1145/3272127.3275013
1810.08100
title_snapshot
10.1145/3272127.3275103
A radiative transfer framework for non-exponential media
https://doi.org/10.1145/3272127.3275103
[ "Benedikt Bitterli", "Srinath Ravichandran", "Thomas Müller", "Magnus Wrenninge", "Jan Novák", "Steve Marschner", "Wojciech Jarosz" ]
We develop a new theory of volumetric light transport for media with non-exponential free-flight distributions. Recent insights from atmospheric sciences and neutron transport demonstrate that such distributions arise in the presence of correlated scatterers, which are naturally produced by processes such as cloud cond...
journal
10.1145/3272127.3275103
null
null
10.1145/3272127.3275066
PhotoShape: photorealistic materials for large-scale shape collections
https://doi.org/10.1145/3272127.3275066
[ "Keunhong Park", "Konstantinos Rematas", "Ali Farhadi", "Steven M. Seitz" ]
Existing online 3D shape repositories contain thousands of 3D models but lack photorealistic appearance. We present an approach to automatically assign high-quality, realistic appearance models to large scale 3D shape collections. The key idea is to jointly leverage three types of online data - shape collections, mater...
journal
10.1145/3272127.3275066
1809.09761
title_snapshot
10.1145/3272127.3275059
An adaptive parameterization for efficient material acquisition and rendering
https://doi.org/10.1145/3272127.3275059
[ "Jonathan Dupuy", "Wenzel Jakob" ]
One of the key ingredients of any physically based rendering system is a detailed specification characterizing the interaction of light and matter of all materials present in a scene, typically via the Bidirectional Reflectance Distribution Function (BRDF). Despite their utility, access to real-world BRDF datasets rema...
journal
10.1145/3272127.3275059
null
null
10.1145/3272127.3275060
Image super-resolution via deterministic-stochastic synthesis and local statistical rectification
https://doi.org/10.1145/3272127.3275060
[ "Weifeng Ge", "Bingchen Gong", "Yizhou Yu" ]
Single image superresolution has been a popular research topic in the last two decades and has recently received a new wave of interest due to deep neural networks. In this paper, we approach this problem from a different perspective. With respect to a downsampled low resolution image, we model a high resolution image ...
journal
10.1145/3272127.3275060
1809.06557
title_snapshot
10.1145/3272127.3275046
CariGANs: unpaired photo-to-caricature translation
https://doi.org/10.1145/3272127.3275046
[ "Kaidi Cao", "Jing Liao", "Lu Yuan" ]
Facial caricature is an art form of drawing faces in an exaggerated way to convey humor or sarcasm. In this paper, we propose the first Generative Adversarial Network (GAN) for unpaired photo-to-caricature translation, which we call "CariGANs". It explicitly models geometric exaggeration and appearance stylization usin...
journal
10.1145/3272127.3275046
1811.00222
title_snapshot
10.1145/3272127.3275028
Automatic unpaired shape deformation transfer
https://doi.org/10.1145/3272127.3275028
[ "Lin Gao", "Jie Yang", "Yi-Ling Qiao", "Yu-Kun Lai", "Paul L. Rosin", "Weiwei Xu", "Shihong Xia" ]
Transferring deformation from a source shape to a target shape is a very useful technique in computer graphics. State-of-the-art deformation transfer methods require either point-wise correspondences between source and target shapes, or pairs of deformed source and target shapes with corresponding deformations. However...
journal
10.1145/3272127.3275028
null
null
10.1145/3272127.3275033
3D fabrication with universal building blocks and pyramidal shells
https://doi.org/10.1145/3272127.3275033
[ "Xuelin Chen", "Honghua Li", "Chi-Wing Fu", "Hao Zhang", "Daniel Cohen-Or", "Baoquan Chen" ]
We introduce a computational solution for cost-efficient 3D fabrication using universal building blocks. Our key idea is to employ a set of universal blocks, which can be massively prefabricated at a low cost, to quickly assemble and constitute a significant internal core of the target object, so that only the residual...
journal
10.1145/3272127.3275033
null
null
10.1145/3272127.3275036
Inverse elastic shell design with contact and friction
https://doi.org/10.1145/3272127.3275036
[ "Mickaël Ly", "Romain Casati", "Florence Bertails-Descoubes", "Mélina Skouras", "Laurence Boissieux" ]
We propose an inverse strategy for modeling thin elastic shells physically, just from the observation of their geometry. Our algorithm takes as input an arbitrary target mesh, and interprets this configuration automatically as a stable equilibrium of a shell simulator under gravity and frictional contact constraints wi...
journal
10.1145/3272127.3275036
null
null
10.1145/3272127.3275008
SCORES: shape composition with recursive substructure priors
https://doi.org/10.1145/3272127.3275008
[ "Chenyang Zhu", "Kai Xu", "Siddhartha Chaudhuri", "Renjiao Yi", "Hao Zhang" ]
We introduce SCORES, a recursive neural network for shape composition. Our network takes as input sets of parts from two or more source 3D shapes and a rough initial placement of the parts. It outputs an optimized part structure for the composed shape, leading to high-quality geometry construction. A unique feature of ...
journal
10.1145/3272127.3275008
1809.05398
title_snapshot
10.1145/3272127.3275006
InverseCSG: automatic conversion of 3D models to CSG trees
https://doi.org/10.1145/3272127.3275006
[ "Tao Du", "Jeevana Priya Inala", "Yewen Pu", "Andrew Spielberg", "Adriana Schulz", "Daniela Rus", "Armando Solar-Lezama", "Wojciech Matusik" ]
While computer-aided design is a major part of many modern manufacturing pipelines, the design files typically generated describe raw geometry. Lost in this representation is the procedure by which these designs were generated. In this paper, we present a method for reverse-engineering the process by which 3D models ma...
journal
10.1145/3272127.3275006
null
null
10.1145/3272127.3275096
Real-time compression and streaming of 4D performances
https://doi.org/10.1145/3272127.3275096
[ "Danhang Tang", "Mingsong Dou", "Peter Lincoln", "Philip Davidson", "Kaiwen Guo", "Jonathan Taylor", "Sean Fanello", "Cem Keskin", "Adarsh Kowdle", "Sofien Bouaziz", "Shahram Izadi", "Andrea Tagliasacchi" ]
We introduce a realtime compression architecture for 4D performance capture that is two orders of magnitude faster than current state-of-the-art techniques, yet achieves comparable visual quality and bitrate. We note how much of the algorithmic complexity in traditional 4D compression arises from the necessity to encod...
journal
10.1145/3272127.3275096
null
null
10.1145/3272127.3275020
Video to fully automatic 3D hair model
https://doi.org/10.1145/3272127.3275020
[ "Shu Liang", "Xiufeng Huang", "Xianyu Meng", "Kunyao Chen", "Linda G. Shapiro", "Ira Kemelmacher-Shlizerman" ]
Imagine taking a selfie video with your mobile phone and getting as output a 3D model of your head (face and 3D hair strands) that can be later used in VR, AR, and any other domain. State of the art hair reconstruction methods allow either a single photo (thus compromising 3D quality) or multiple views, but they requir...
journal
10.1145/3272127.3275020
1809.04765
title_snapshot