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10.1145/3306346.3323005
Optimal transport-based polar interpolation of directional fields
https://doi.org/10.1145/3306346.3323005
[ "Justin Solomon", "Amir Vaxman" ]
We propose an algorithm that interpolates between vector and frame fields on triangulated surfaces, designed to complement field design methods in geometry processing and simulation. Our algorithm is based on a polar construction, leveraging a conservation law from the Hopf-Poincaré theorem to match singular points usi...
journal
10.1145/3306346.3323005
official
null
null
10.1145/3306346.3322960
LayerCode: optical barcodes for 3D printed shapes
https://doi.org/10.1145/3306346.3322960
[ "Henrique Teles Maia", "Dingzeyu Li", "Yuan Yang", "Changxi Zheng" ]
With the advance of personal and customized fabrication techniques, the capability to embed information in physical objects becomes evermore crucial. We present LayerCode , a tagging scheme that embeds a carefully designed barcode pattern in 3D printed objects as a deliberate byproduct of the 3D printing process. The L...
journal
10.1145/3306346.3322960
official
null
null
10.1145/3306346.3322937
Wave-based non-line-of-sight imaging using fast f-k migration
https://doi.org/10.1145/3306346.3322937
[ "David B. Lindell", "Gordon Wetzstein", "Matthew O'Toole" ]
Imaging objects outside a camera's direct line of sight has important applications in robotic vision, remote sensing, and many other domains. Time-of-flight-based non-line-of-sight (NLOS) imaging systems have recently demonstrated impressive results, but several challenges remain. Image formation and inversion models h...
journal
10.1145/3306346.3322937
official
null
null
10.1145/3306346.3323031
Fractional gaussian fields for modeling and rendering of spatially-correlated media
https://doi.org/10.1145/3306346.3323031
[ "Jie Guo", "Yanjun Chen", "Bingyang Hu", "Ling-Qi Yan", "Yanwen Guo", "Yuntao Liu" ]
Transmission of radiation through spatially-correlated media has demonstrated deviations from the classical exponential law of the corresponding uncorrelated media. In this paper, we propose a general, physically-based method for modeling such correlated media with non-exponential decay of transmittance. We describe sp...
journal
10.1145/3306346.3323031
official
null
null
10.1145/3306346.3322981
Volume-aware design of composite molds
https://doi.org/10.1145/3306346.3322981
[ "Thomas Alderighi", "Luigi Malomo", "Daniela Giorgi", "Bernd Bickel", "Paolo Cignoni", "Nico Pietroni" ]
We propose a novel technique for the automatic design of molds to cast highly complex shapes. The technique generates composite, two-piece molds. Each mold piece is made up of a hard plastic shell and a flexible silicone part. Thanks to the thin, soft, and smartly shaped silicone part, which is kept in place by a hard ...
journal
10.1145/3306346.3322981
official
null
null
10.1145/3306346.3322983
Hand modeling and simulation using stabilized magnetic resonance imaging
https://doi.org/10.1145/3306346.3322983
[ "Bohan Wang", "George Matcuk", "Jernej Barbič" ]
We demonstrate how to acquire complete human hand bone anatomy (meshes) in multiple poses using magnetic resonance imaging (MRI). Such acquisition was previously difficult because MRI scans must be long for high-precision results (over 10 minutes) and because humans cannot hold the hand perfectly still in non-trivial a...
journal
10.1145/3306346.3322983
official
null
null
10.1145/3306346.3322969
NeuroSkinning: automatic skin binding for production characters with deep graph networks
https://doi.org/10.1145/3306346.3322969
[ "Lijuan Liu", "Youyi Zheng", "Di Tang", "Yi Yuan", "Changjie Fan", "Kun Zhou" ]
We present a deep-learning-based method to automatically compute skin weights for skeleton-based deformation of production characters. Given a character mesh and its associated skeleton hierarchy in rest pose, our method constructs a graph for the mesh, each node of which encodes the mesh-skeleton attributes of a verte...
journal
10.1145/3306346.3322969
official
null
null
10.1145/3306346.3323020
Neural volumes: learning dynamic renderable volumes from images
https://doi.org/10.1145/3306346.3323020
[ "Stephen Lombardi", "Tomas Simon", "Jason Saragih", "Gabriel Schwartz", "Andreas Lehrmann", "Yaser Sheikh" ]
Modeling and rendering of dynamic scenes is challenging, as natural scenes often contain complex phenomena such as thin structures, evolving topology, translucency, scattering, occlusion, and biological motion. Mesh-based reconstruction and tracking often fail in these cases, and other approaches (e.g., light field vid...
journal
10.1145/3306346.3323020
official
1906.07751
title_snapshot
10.1145/3306346.3322953
Spectral coarsening of geometric operators
https://doi.org/10.1145/3306346.3322953
[ "Hsueh-Ti Derek Liu", "Alec Jacobson", "Maks Ovsjanikov" ]
We introduce a novel approach to measure the behavior of a geometric operator before and after coarsening. By comparing eigenvectors of the input operator and its coarsened counterpart, we can quantitatively and visually analyze how well the spectral properties of the operator are maintained. Using this measure, we sho...
journal
10.1145/3306346.3322953
official
1905.05161
title_snapshot
10.1145/3306346.3322966
Synthesis of biologically realistic human motion using joint torque actuation
https://doi.org/10.1145/3306346.3322966
[ "Yifeng Jiang", "Tom Van Wouwe", "Friedl De Groote", "C. Karen Liu" ]
Using joint actuators to drive the skeletal movements is a common practice in character animation, but the resultant torque patterns are often unnatural or infeasible for real humans to achieve. On the other hand, physiologically-based models explicitly simulate muscles and tendons and thus produce more human-like move...
journal
10.1145/3306346.3322966
official
1904.13041
title_snapshot
10.1145/3306346.3322965
Warp-and-project tomography for rapidly deforming objects
https://doi.org/10.1145/3306346.3322965
[ "Guangming Zang", "Ramzi Idoughi", "Ran Tao", "Gilles Lubineau", "Peter Wonka", "Wolfgang Heidrich" ]
Computed tomography has emerged as the method of choice for scanning complex shapes as well as interior structures of stationary objects. Recent progress has also allowed the use of CT for analyzing deforming objects and dynamic phenomena, although the deformations have been constrained to be either slow or periodic mo...
journal
10.1145/3306346.3322965
official
null
null
10.1145/3306346.3322954
Sample-based Monte Carlo denoising using a kernel-splatting network
https://doi.org/10.1145/3306346.3322954
[ "Michaël Gharbi", "Tzu-Mao Li", "Miika Aittala", "Jaakko Lehtinen", "Frédo Durand" ]
Denoising has proven to be useful to efficiently generate high-quality Monte Carlo renderings. Traditional pixel-based denoisers exploit summary statistics of a pixel's sample distributions, which discards much of the samples' information and limits their denoising power. On the other hand, sample-based techniques tend...
journal
10.1145/3306346.3322954
official
null
null
10.1145/3306346.3323043
Weaving geodesic foliations
https://doi.org/10.1145/3306346.3323043
[ "Josh Vekhter", "Jiacheng Zhuo", "Luisa F Gil Fandino", "Qixing Huang", "Etienne Vouga" ]
We study discrete geodesic foliations of surfaces---foliations whose leaves are all approximately geodesic curves---and develop several new variational algorithms for computing such foliations. Our key insight is a relaxation of vector field integrability in the discrete setting, which allows us to optimize for curl-fr...
journal
10.1145/3306346.3323043
official
null
null
10.1145/3306346.3323034
Vibration-minimizing motion retargeting for robotic characters
https://doi.org/10.1145/3306346.3323034
[ "Shayan Hoshyari", "Hongyi Xu", "Espen Knoop", "Stelian Coros", "Moritz Bächer" ]
Creating animations for robotic characters is very challenging due to the constraints imposed by their physical nature. In particular, the combination of fast motions and unavoidable structural deformations leads to mechanical oscillations that negatively affect their performances. Our goal is to automatically transfer...
journal
10.1145/3306346.3323034
official
null
null
10.1145/3306346.3322956
SAGNet: structure-aware generative network for 3D-shape modeling
https://doi.org/10.1145/3306346.3322956
[ "Zhijie Wu", "Xiang Wang", "Di Lin", "Dani Lischinski", "Daniel Cohen-Or", "Hui Huang" ]
We present SAGNet, a structure-aware generative model for 3D shapes. Given a set of segmented objects of a certain class, the geometry of their parts and the pairwise relationships between them (the structure) are jointly learned and embedded in a latent space by an autoencoder. The encoder intertwines the geometry and...
journal
10.1145/3306346.3322956
official
1808.03981
title_snapshot
10.1145/3306346.3323037
A symmetric objective function for ICP
https://doi.org/10.1145/3306346.3323037
[ "Szymon Rusinkiewicz" ]
The Iterative Closest Point (ICP) algorithm, commonly used for alignment of 3D models, has previously been defined using either a point-to-point or point-to-plane objective. Alternatively, researchers have proposed computationally-expensive methods that directly minimize the distance function between surfaces. We intro...
journal
10.1145/3306346.3323037
official
null
null
10.1145/3306346.3323000
Computational peeling art design
https://doi.org/10.1145/3306346.3323000
[ "Hao Liu", "Xiao-Teng Zhang", "Xiao-Ming Fu", "Zhi-Chao Dong", "Ligang Liu" ]
Some artists peel citrus fruits into a variety of elegant 2D shapes, depicting animals, plants, and cartoons. It is a creative art form, called Citrus Peeling Art. This art form follows the conservation principle, i.e., each shape must be created using one entire peel. Central to this art is finding optimal cut lines s...
journal
10.1145/3306346.3323000
official
null
null
10.1145/3306346.3323015
Synthetic defocus and look-ahead autofocus for casual videography
https://doi.org/10.1145/3306346.3323015
[ "Xuaner Zhang", "Kevin Matzen", "Vivien Nguyen", "Dillon Yao", "You Zhang", "Ren Ng" ]
In cinema, large camera lenses create beautiful shallow depth of field (DOF), but make focusing difficult and expensive. Accurate cinema focus usually relies on a script and a person to control focus in realtime. Casual videographers often crave cinematic focus, but fail to achieve it. We either sacrifice shallow DOF, ...
journal
10.1145/3306346.3323015
official
1905.06326
title_snapshot
10.1145/3306346.3323013
Multi-view relighting using a geometry-aware network
https://doi.org/10.1145/3306346.3323013
[ "Julien Philip", "Michaël Gharbi", "Tinghui Zhou", "Alexei A. Efros", "George Drettakis" ]
We propose the first learning-based algorithm that can relight images in a plausible and controllable manner given multiple views of an outdoor scene. In particular, we introduce a geometry-aware neural network that utilizes multiple geometry cues (normal maps, specular direction, etc.) and source and target shadow mas...
journal
10.1145/3306346.3323013
official
null
null
10.1145/3306346.3323022
CurviSlicer: slightly curved slicing for 3-axis printers
https://doi.org/10.1145/3306346.3323022
[ "Jimmy Etienne", "Nicolas Ray", "Daniele Panozzo", "Samuel Hornus", "Charlie C. L. Wang", "Jonàs Martínez", "Sara McMains", "Marc Alexa", "Brian Wyvill", "Sylvain Lefebvre" ]
Most additive manufacturing processes fabricate objects by stacking planar layers of solidified material. As a result, produced parts exhibit a so-called staircase effect, which results from sampling slanted surfaces with parallel planes. Using thinner slices reduces this effect, but it always remains visible where lay...
journal
10.1145/3306346.3323022
official
null
null
10.1145/3306346.3322991
Wallpaper pattern alignment along garment seams
https://doi.org/10.1145/3306346.3322991
[ "Katja Wolff", "Olga Sorkine-Hornung" ]
Despite recent developments towards on-demand, individualized garment design and fabrication, the majority of processes in the fashion industry are still inefficient and heavily dependent on manual work. A significant amount of recent research in this area has been focused on supporting designers to digitally create se...
journal
10.1145/3306346.3322991
official
null
null
10.1145/3306346.3322944
Tensor maps for synchronizing heterogeneous shape collections
https://doi.org/10.1145/3306346.3322944
[ "Qixing Huang", "Zhenxiao Liang", "Haoyun Wang", "Simiao Zuo", "Chandrajit Bajaj" ]
Establishing high-quality correspondence maps between geometric shapes has been shown to be the fundamental problem in managing geometric shape collections. Prior work has focused on computing efficient maps between pairs of shapes, and has shown a quantifiable benefit of joint map synchronization, where a collection o...
journal
10.1145/3306346.3322944
official
null
null
10.1145/3306346.3322936
Accurate appearance preserving prefiltering for rendering displacement-mapped surfaces
https://doi.org/10.1145/3306346.3322936
[ "Lifan Wu", "Shuang Zhao", "Ling-Qi Yan", "Ravi Ramamoorthi" ]
Prefiltering the reflectance of a displacement-mapped surface while preserving its overall appearance is challenging, as smoothing a displacement map causes complex changes of illumination effects such as shadowing-masking and interreflection. In this paper, we introduce a new method that prefilters displacement maps a...
journal
10.1145/3306346.3322936
official
null
null
10.1145/3306346.3322942
Multi-robot collaborative dense scene reconstruction
https://doi.org/10.1145/3306346.3322942
[ "Siyan Dong", "Kai Xu", "Qiang Zhou", "Andrea Tagliasacchi", "Shiqing Xin", "Matthias Nießner", "Baoquan Chen" ]
We present an autonomous scanning approach which allows multiple robots to perform collaborative scanning for dense 3D reconstruction of unknown indoor scenes. Our method plans scanning paths for several robots, allowing them to efficiently coordinate with each other such that the collective scanning coverage and recon...
journal
10.1145/3306346.3322942
official
null
null
10.1145/3306346.3322989
Star-shaped metrics for mechanical metamaterial design
https://doi.org/10.1145/3306346.3322989
[ "Jonàs Martínez", "Mélina Skouras", "Christian Schumacher", "Samuel Hornus", "Sylvain Lefebvre", "Bernhard Thomaszewski" ]
We present a method for designing mechanical metamaterials based on the novel concept of Voronoi diagrams induced by star-shaped metrics. As one of its central advantages, our approach supports interpolation between arbitrary metrics. This capability opens up a rich space of structures with interesting aesthetics and a...
journal
10.1145/3306346.3322989
official
null
null
10.1145/3306346.3323017
Finding hexahedrizations for small quadrangulations of the sphere
https://doi.org/10.1145/3306346.3323017
[ "Kilian Verhetsel", "Jeanne Pellerin", "Jean-François Remacle" ]
This paper tackles the challenging problem of constrained hexahedral meshing. An algorithm is introduced to build combinatorial hexahedral meshes whose boundary facets exactly match a given quadrangulation of the topological sphere. This algorithm is the first practical solution to the problem. It is able to compute sm...
journal
10.1145/3306346.3323017
official
1904.11229
title_snapshot
10.1145/3306346.3323036
A similarity measure for material appearance
https://doi.org/10.1145/3306346.3323036
[ "Manuel Lagunas", "Sandra Malpica", "Ana Serrano", "Elena Garces", "Diego Gutierrez", "Belen Masia" ]
We present a model to measure the similarity in appearance between different materials, which correlates with human similarity judgments. We first create a database of 9,000 rendered images depicting objects with varying materials, shape and illumination. We then gather data on perceived similarity from crowdsourced ex...
journal
10.1145/3306346.3323036
official
1905.01562
title_snapshot
10.1145/3306346.3322961
iMapper: interaction-guided scene mapping from monocular videos
https://doi.org/10.1145/3306346.3322961
[ "Aron Monszpart", "Paul Guerrero", "Duygu Ceylan", "Ersin Yumer", "Niloy J. Mitra" ]
Next generation smart and augmented reality systems demand a computational understanding of monocular footage that captures humans in physical spaces to reveal plausible object arrangements and human-object interactions. Despite recent advances, both in scene layout and human motion analysis, the above setting remains ...
journal
10.1145/3306346.3322961
official
1806.07889
title_judge
10.1145/3306346.3322943
Vidgets: modular mechanical widgets for mobile devices
https://doi.org/10.1145/3306346.3322943
[ "Chang Xiao", "Karl Bayer", "Changxi Zheng", "Shree K. Nayar" ]
We present Vidgets , a family of mechanical widgets, specifically push buttons and rotary knobs that augment mobile devices with tangible user interfaces. When these widgets are attached to a mobile device and a user interacts with them, the widgets' nonlinear mechanical response shifts the device slightly and quickly,...
journal
10.1145/3306346.3322943
official
null
null
10.1145/3306346.3322971
Content-aware generative modeling of graphic design layouts
https://doi.org/10.1145/3306346.3322971
[ "Xinru Zheng", "Xiaotian Qiao", "Ying Cao", "Rynson W. H. Lau" ]
Layout is fundamental to graphic designs. For visual attractiveness and efficient communication of messages and ideas, graphic design layouts often have great variation, driven by the contents to be presented. In this paper, we study the problem of content-aware graphic design layout generation. We propose a deep gener...
journal
10.1145/3306346.3322971
official
null
null
10.1145/3306346.3322941
PlanIT: planning and instantiating indoor scenes with relation graph and spatial prior networks
https://doi.org/10.1145/3306346.3322941
[ "Kai Wang", "Yu-An Lin", "Ben Weissmann", "Manolis Savva", "Angel X. Chang", "Daniel Ritchie" ]
We present a new framework for interior scene synthesis that combines a high-level relation graph representation with spatial prior neural networks. We observe that prior work on scene synthesis is divided into two camps: object-oriented approaches (which reason about the set of objects in a scene and their configurati...
journal
10.1145/3306346.3322941
official
null
null
10.1145/3306346.3322962
On bubble rings and ink chandeliers
https://doi.org/10.1145/3306346.3322962
[ "Marcel Padilla", "Albert Chern", "Felix Knöppel", "Ulrich Pinkall", "Peter Schröder" ]
We introduce variable thickness, viscous vortex filaments. These can model such varied phenomena as underwater bubble rings or the intricate "chandeliers" formed by ink dropping into fluid. Treating the evolution of such filaments as an instance of Newtonian dynamics on a Riemannian configuration manifold we are able t...
journal
10.1145/3306346.3322962
official
null
null
10.1145/3306346.3322976
KleinPAT: optimal mode conflation for time-domain precomputation of acoustic transfer
https://doi.org/10.1145/3306346.3322976
[ "Jui-Hsien Wang", "Doug L. James" ]
We propose a new modal sound synthesis method that rapidly estimates all acoustic transfer fields of a linear modal vibration model, and greatly reduces preprocessing costs. Instead of performing a separate frequency-domain Helmholtz radiation analysis for each mode, our method partitions vibration modes into chords us...
journal
10.1145/3306346.3322976
official
null
null
10.1145/3306346.3322974
A learned shape-adaptive subsurface scattering model
https://doi.org/10.1145/3306346.3322974
[ "Delio Vicini", "Vladlen Koltun", "Wenzel Jakob" ]
Subsurface scattering, in which light refracts into a translucent material to interact with its interior, is the dominant mode of light transport in many types of organic materials. Accounting for this phenomenon is thus crucial for visual realism, but explicit simulation of the complex internal scattering process is o...
journal
10.1145/3306346.3322974
official
null
null
10.1145/3306346.3323016
Ellipsoidal path connections for time-gated rendering
https://doi.org/10.1145/3306346.3323016
[ "Adithya Pediredla", "Ashok Veeraraghavan", "Ioannis Gkioulekas" ]
During the last decade, we have been witnessing the continued development of new time-of-flight imaging devices, and their increased use in numerous and varied applications. However, physics-based rendering techniques that can accurately simulate these devices are still lacking: while existing algorithms are adequate f...
journal
10.1145/3306346.3323016
official
null
null
10.1145/3306346.3322993
TileGAN: synthesis of large-scale non-homogeneous textures
https://doi.org/10.1145/3306346.3322993
[ "Anna Frühstück", "Ibraheem Alhashim", "Peter Wonka" ]
We tackle the problem of texture synthesis in the setting where many input images are given and a large-scale output is required. We build on recent generative adversarial networks and propose two extensions in this paper. First, we propose an algorithm to combine outputs of GANs trained on a smaller resolution to prod...
journal
10.1145/3306346.3322993
official
1904.12795
title_snapshot
10.1145/3306346.3323025
A null-scattering path integral formulation of light transport
https://doi.org/10.1145/3306346.3323025
[ "Bailey Miller", "Iliyan Georgiev", "Wojciech Jarosz" ]
Unbiased rendering of general, heterogeneous participating media currently requires using null-collision approaches for estimating transmittance and generating free-flight distances. A long-standing limitation of these approaches, however, is that the corresponding path pdfs cannot be computed due to the black-box natu...
journal
10.1145/3306346.3323025
official
null
null
10.1145/3306346.3323033
Perceptual rasterization for head-mounted display image synthesis
https://doi.org/10.1145/3306346.3323033
[ "Sebastian Friston", "Tobias Ritschel", "Anthony Steed" ]
We suggest a rasterization pipeline tailored towards the needs of HMDs, where latency and field-of-view requirements pose new challenges beyond those of traditional desktop displays. Instead of image warping for low latency, or using multiple passes for foveation, we show how both can be produced directly in a single p...
journal
10.1145/3306346.3323033
official
1806.05385
title_snapshot
10.1145/3306346.3322938
Tangent-space optimization for interactive animation control
https://doi.org/10.1145/3306346.3322938
[ "Loïc Ciccone", "Cengiz Öztireli", "Robert W. Sumner" ]
Character animation tools are based on a keyframing metaphor where artists pose characters at selected keyframes and the software automatically interpolates the frames inbetween. Although the quality of the interpolation is critical for achieving a fluid and engaging animation, the tools available to adjust the result ...
journal
10.1145/3306346.3322938
official
null
null
10.1145/3306346.3322987
Foveated AR: dynamically-foveated augmented reality display
https://doi.org/10.1145/3306346.3322987
[ "Jonghyun Kim", "Youngmo Jeong", "Michael Stengel", "Kaan Akşit", "Rachel Albert", "Ben Boudaoud", "Trey Greer", "Joohwan Kim", "Ward Lopes", "Zander Majercik", "Peter Shirley", "Josef Spjut", "Morgan McGuire", "David Luebke" ]
We present a near-eye augmented reality display with resolution and focal depth dynamically driven by gaze tracking. The display combines a traveling microdisplay relayed off a concave half-mirror magnifier for the high-resolution foveal region, with a wide field-of-view peripheral display using a projector-based Maxwe...
journal
10.1145/3306346.3322987
official
null
null
10.1145/3306346.3323021
SPOT: sliced partial optimal transport
https://doi.org/10.1145/3306346.3323021
[ "Nicolas Bonneel", "David Coeurjolly" ]
Optimal transport research has surged in the last decade with wide applications in computer graphics. In most cases, however, it has focused on the special case of the so-called "balanced" optimal transport problem, that is, the problem of optimally matching positive measures of equal total mass. While this approach is...
journal
10.1145/3306346.3323021
official
null
null
10.1145/3306346.3323018
Hierarchical russian roulette for vertex connections
https://doi.org/10.1145/3306346.3323018
[ "Yusuke Tokuyoshi", "Takahiro Harada" ]
While bidirectional path tracing is a well-established light transport algorithm, many samples are required to obtain high-quality results for specular-diffuse-glossy or glossy-diffuse-glossy reflections especially when they are highly glossy. To improve the efficiency for such light path configurations, we propose a h...
journal
10.1145/3306346.3323018
official
null
null
10.1145/3306346.3322947
Mixing sauces: a viscosity blending model for shear thinning fluids
https://doi.org/10.1145/3306346.3322947
[ "Kentaro Nagasawa", "Takayuki Suzuki", "Ryohei Seto", "Masato Okada", "Yonghao Yue" ]
The materials around us usually exist as mixtures of constituents, each constituent with possibly a different elasto-viscoplastic property. How can we describe the material property of such a mixture is the core question of this paper. We propose a nonlinear blending model that can capture intriguing flowing behaviors ...
journal
10.1145/3306346.3322947
official
null
null
10.1145/3306346.3323026
Gaussian-product subdivision surfaces
https://doi.org/10.1145/3306346.3323026
[ "Reinhold Preiner", "Tamy Boubekeur", "Michael Wimmer" ]
Probabilistic distribution models like Gaussian mixtures have shown great potential for improving both the quality and speed of several geometric operators. This is largely due to their ability to model large fuzzy data using only a reduced set of atomic distributions, allowing for large compression rates at minimal in...
journal
10.1145/3306346.3323026
official
null
null
10.1145/3306346.3322948
Distortion-free wide-angle portraits on camera phones
https://doi.org/10.1145/3306346.3322948
[ "YiChang Shih", "Wei-Sheng Lai", "Chia-Kai Liang" ]
Photographers take wide-angle shots to enjoy expanding views, group portraits that never miss anyone, or composite subjects with spectacular scenery background. In spite of the rapid proliferation of wide-angle cameras on mobile phones, a wider field-of-view (FOV) introduces a stronger perspective distortion. Most nota...
journal
10.1145/3306346.3322948
official
null
null
10.1145/3306346.3322996
Hyperparameter optimization in black-box image processing using differentiable proxies
https://doi.org/10.1145/3306346.3322996
[ "Ethan Tseng", "Felix Yu", "Yuting Yang", "Fahim Mannan", "Karl ST. Arnaud", "Derek Nowrouzezahrai", "Jean-François Lalonde", "Felix Heide" ]
Nearly every commodity imaging system we directly interact with, or indirectly rely on, leverages power efficient, application-adjustable black-box hardware image signal processing (ISPs) units, running either in dedicated hardware blocks, or as proprietary software modules on programmable hardware. The configuration p...
journal
10.1145/3306346.3322996
official
null
null
10.1145/3306346.3322939
An adaptive variational finite difference framework for efficient symmetric octree viscosity
https://doi.org/10.1145/3306346.3322939
[ "Ryan Goldade", "Yipeng Wang", "Mridul Aanjaneya", "Christopher Batty" ]
While pressure forces are often the bottleneck in (near-)inviscid fluid simulations, viscosity can impose orders of magnitude greater computational costs at lower Reynolds numbers. We propose an implicit octree finite difference discretization that significantly accelerates the solution of the free surface viscosity eq...
journal
10.1145/3306346.3322939
official
null
null
10.1145/3306346.3322967
Learning to optimize halide with tree search and random programs
https://doi.org/10.1145/3306346.3322967
[ "Andrew Adams", "Karima Ma", "Luke Anderson", "Riyadh Baghdadi", "Tzu-Mao Li", "Michaël Gharbi", "Benoit Steiner", "Steven Johnson", "Kayvon Fatahalian", "Frédo Durand", "Jonathan Ragan-Kelley" ]
We present a new algorithm to automatically schedule Halide programs for high-performance image processing and deep learning. We significantly improve upon the performance of previous methods, which considered a limited subset of schedules. We define a parameterization of possible schedules much larger than prior metho...
journal
10.1145/3306346.3322967
official
null
null
10.1145/3306346.3323039
Synthetic silviculture: multi-scale modeling of plant ecosystems
https://doi.org/10.1145/3306346.3323039
[ "Miłosz Makowski", "Torsten Hädrich", "Jan Scheffczyk", "Dominik L. Michels", "Sören Pirk", "Wojtek Pałubicki" ]
Due to the enormous amount of detail and the interplay of various biological phenomena, modeling realistic ecosystems of trees and other plants is a challenging and open problem. Previous research on modeling plant ecologies has focused on representations to handle this complexity, mostly through geometric simplificati...
journal
10.1145/3306346.3323039
official
null
null
10.1145/3306346.3323014
Anisotropic elasticity for inversion-safety and element rehabilitation
https://doi.org/10.1145/3306346.3323014
[ "Theodore Kim", "Fernando De Goes", "Hayley Iben" ]
We present an analysis of anisotropic hyperelasticity, specifically transverse isotropy, that obtains closed-form expressions for the eigendecompositions of many common energies. We then use these to build fast and concise Newton implementations. We leverage our analysis in two separate applications. First, we show tha...
journal
10.1145/3306346.3323014
official
null
null
10.1145/3306346.3322972
Scalable muscle-actuated human simulation and control
https://doi.org/10.1145/3306346.3322972
[ "Seunghwan Lee", "Moonseok Park", "Kyoungmin Lee", "Jehee Lee" ]
Many anatomical factors, such as bone geometry and muscle condition, interact to affect human movements. This work aims to build a comprehensive musculoskeletal model and its control system that reproduces realistic human movements driven by muscle contraction dynamics. The variations in the anatomic model generate a s...
journal
10.1145/3306346.3322972
official
null
null
10.1145/3306346.3322994
Variational implicit point set surfaces
https://doi.org/10.1145/3306346.3322994
[ "Zhiyang Huang", "Nathan Carr", "Tao Ju" ]
We propose a new method for reconstructing an implicit surface from an un-oriented point set. While existing methods often involve non-trivial heuristics and require additional constraints, such as normals or labelled points, we introduce a direct definition of the function from the points as the solution to a constrai...
journal
10.1145/3306346.3322994
official
null
null
10.1145/3306346.3322964
Using moments to represent bounded signals for spectral rendering
https://doi.org/10.1145/3306346.3322964
[ "Christoph Peters", "Sebastian Merzbach", "Johannes Hanika", "Carsten Dachsbacher" ]
We present a compact and efficient representation of spectra for accurate rendering using more than three dimensions. While tristimulus color spaces are sufficient for color display, a spectral renderer has to simulate light transport per wavelength. Consequently, emission spectra and surface albedos need to be known a...
journal
10.1145/3306346.3322964
official
null
null
10.1145/3306346.3323003
PuppetMaster: robotic animation of marionettes
https://doi.org/10.1145/3306346.3323003
[ "Simon Zimmermann", "Roi Poranne", "James M. Bern", "Stelian Coros" ]
We present a computational framework for robotic animation of real-world string puppets. Also known as marionettes, these articulated figures are typically brought to life by human puppeteers. The puppeteer manipulates rigid handles that are attached to the puppet from above via strings. The motions of the marionette a...
journal
10.1145/3306346.3323003
official
null
null
10.1145/3306346.3323045
Physically-based statistical simulation of rain sound
https://doi.org/10.1145/3306346.3323045
[ "Shiguang Liu", "Haonan Cheng", "Yiying Tong" ]
A typical rainfall scenario contains tens of thousands of dynamic sound sources. A characteristic of the large-scale scene is the strong randomness in raindrop distribution, which makes it notoriously expensive to synthesize such sounds with purely physical methods. Moreover, the raindrops hitting different surfaces (l...
journal
10.1145/3306346.3323045
official
null
null
10.1145/3306346.3322975
Visual smoothness of polyhedral surfaces
https://doi.org/10.1145/3306346.3322975
[ "Davide Pellis", "Martin Kilian", "Felix Dellinger", "Johannes Wallner", "Helmut Pottmann" ]
Representing smooth geometric shapes by polyhedral meshes can be quite difficult in situations where the variation of edges and face normals is prominently visible. Especially problematic are saddle-shaped areas of the mesh, where typical vertices with six incident edges are ill suited to emulate the more symmetric smo...
journal
10.1145/3306346.3322975
official
null
null
10.1145/3306346.3322988
Computational design of fabric formwork
https://doi.org/10.1145/3306346.3322988
[ "Xiaoting Zhang", "Guoxin Fang", "Melina Skouras", "Gwenda Gieseler", "Charlie C. L. Wang", "Emily Whiting" ]
We present an inverse design tool for fabric formwork - a process where flat panels are sewn together to form a fabric container for casting a plaster sculpture. Compared to 3D printing techniques, the benefit of fabric formwork is its properties of low-cost and easy transport. The process of fabric formwork is akin to...
journal
10.1145/3306346.3322988
official
null
null
10.1145/3306346.3323032
Beyond trilinear interpolation: higher quality for free
https://doi.org/10.1145/3306346.3323032
[ "Balázs Csébfalvi" ]
In volume-rendering applications, it is a de facto standard to reconstruct the underlying continuous function by using trilinear interpolation, and to estimate the gradients for the shading computations by calculating central differences on the fly. In a GPU implementation, this requires seven trilinear texture samples...
journal
10.1145/3306346.3323032
official
null
null
10.1145/3306346.3322957
Interactive hand pose estimation using a stretch-sensing soft glove
https://doi.org/10.1145/3306346.3322957
[ "Oliver Glauser", "Shihao Wu", "Daniele Panozzo", "Otmar Hilliges", "Olga Sorkine-Hornung" ]
We propose a stretch-sensing soft glove to interactively capture hand poses with high accuracy and without requiring an external optical setup. We demonstrate how our device can be fabricated and calibrated at low cost, using simple tools available in most fabrication labs. To reconstruct the pose from the capacitive s...
journal
10.1145/3306346.3322957
official
null
null
10.1145/3306346.3323029
Symmetric moving frames
https://doi.org/10.1145/3306346.3323029
[ "Etienne Corman", "Keenan Crane" ]
A basic challenge in field-guided hexahedral meshing is to find a spatially-varying frame that is adapted to the domain geometry and is continuous up to symmetries of the cube. We introduce a fundamentally new representation of such 3D cross fields based on Cartan's method of moving frames. Our key observation is that ...
journal
10.1145/3306346.3323029
official
null
null
10.1145/3306346.3323007
Deep view synthesis from sparse photometric images
https://doi.org/10.1145/3306346.3323007
[ "Zexiang Xu", "Sai Bi", "Kalyan Sunkavalli", "Sunil Hadap", "Hao Su", "Ravi Ramamoorthi" ]
The goal of light transport acquisition is to take images from a sparse set of lighting and viewing directions, and combine them to enable arbitrary relighting with changing view. While relighting from sparse images has received significant attention, there has been relatively less progress on view synthesis from a spa...
journal
10.1145/3306346.3323007
official
null
null
10.1145/3306346.3322997
Affine interpolation in a lie group framework
https://doi.org/10.1145/3306346.3322997
[ "Sumukh Bansal", "Aditya Tatu" ]
Affine transformations are of vital importance in many tasks pertaining to motion design and animation. Interpolation of affine transformations is non-trivial. Typically, the given affine transformation is decomposed into simpler components which are easier to interpolate. This may lead to unintuitive results, while in...
journal
10.1145/3306346.3322997
official
null
null
10.1145/3306346.3322992
Geometry-aware scattering compensation for 3D printing
https://doi.org/10.1145/3306346.3322992
[ "Denis Sumin", "Tobias Rittig", "Vahid Babaei", "Thomas Nindel", "Alexander Wilkie", "Piotr Didyk", "Bernd Bickel", "Jaroslav Křivánek", "Karol Myszkowski", "Tim Weyrich" ]
Commercially available full-color 3D printing allows for detailed control of material deposition in a volume, but an exact reproduction of a target surface appearance is hampered by the strong subsurface scattering that causes nontrivial volumetric cross-talk at the print surface. Previous work showed how an iterative ...
journal
10.1145/3306346.3322992
official
null
null
10.1145/3306346.3323002
Fundamental solutions for water wave animation
https://doi.org/10.1145/3306346.3323002
[ "Camille Schreck", "Christian Hafner", "Chris Wojtan" ]
This paper investigates the use of fundamental solutions for animating detailed linear water surface waves. We first propose an analytical solution for efficiently animating circular ripples in closed form. We then show how to adapt the method of fundamental solutions (MFS) to create ambient waves interacting with comp...
journal
10.1145/3306346.3323002
official
null
null
10.1145/3306346.3322951
Decomposed optimization time integrator for large-step elastodynamics
https://doi.org/10.1145/3306346.3322951
[ "Minchen Li", "Ming Gao", "Timothy Langlois", "Chenfanfu Jiang", "Danny M. Kaufman" ]
Simulation methods are rapidly advancing the accuracy, consistency and controllability of elastodynamic modeling and animation. Critical to these advances, we require efficient time step solvers that reliably solve all implicit time integration problems for elastica. While available time step solvers succeed admirably ...
journal
10.1145/3306346.3322951
official
null
null
10.1145/3306346.3322998
InteractionFusion: real-time reconstruction of hand poses and deformable objects in hand-object interactions
https://doi.org/10.1145/3306346.3322998
[ "Hao Zhang", "Zi-Hao Bo", "Jun-Hai Yong", "Feng Xu" ]
Hand-object interaction is challenging to reconstruct but important for many applications like HCI, robotics and so on. Previous works focus on either the hand or the object while we jointly track the hand poses, fuse the 3D object model and reconstruct its rigid and nonrigid motions, and perform all these tasks in rea...
journal
10.1145/3306346.3322998
official
null
null
10.1145/3306346.3323046
Interactive and automatic navigation for 360° video playback
https://doi.org/10.1145/3306346.3323046
[ "Kyoungkook Kang", "Sunghyun Cho" ]
A common way to view a 360° video on a 2D display is to crop and render a part of the video as a normal field-of-view (NFoV) video. While users can enjoy natural-looking NFoV videos using this approach, they need to constantly make manual adjustment of the viewing direction not to miss interesting events in the video. ...
journal
10.1145/3306346.3323046
official
null
null
10.1145/3306346.3323028
Text-based editing of talking-head video
https://doi.org/10.1145/3306346.3323028
[ "Ohad Fried", "Ayush Tewari", "Michael Zollhöfer", "Adam Finkelstein", "Eli Shechtman", "Dan B Goldman", "Kyle Genova", "Zeyu Jin", "Christian Theobalt", "Maneesh Agrawala" ]
Editing talking-head video to change the speech content or to remove filler words is challenging. We propose a novel method to edit talking-head video based on its transcript to produce a realistic output video in which the dialogue of the speaker has been modified, while maintaining a seamless audio-visual flow (i.e. ...
journal
10.1145/3306346.3323028
official
1906.01524
title_snapshot
10.1145/3306346.3323040
X-Shells: a new class of deployable beam structures
https://doi.org/10.1145/3306346.3323040
[ "J. Panetta", "M. Konaković-Luković", "F. Isvoranu", "E. Bouleau", "M. Pauly" ]
We present X-shells , a new class of deployable structures formed by an ensemble of elastically deforming beams coupled through rotational joints. An X-shell can be assembled conveniently in a flat configuration from standard elastic beam elements and then deployed through force actuation into the desired 3D target sta...
journal
10.1145/3306346.3323040
official
null
null
10.1145/3306346.3323012
Progressive embedding
https://doi.org/10.1145/3306346.3323012
[ "Hanxiao Shen", "Zhongshi Jiang", "Denis Zorin", "Daniele Panozzo" ]
Tutte embedding is one of the most common building blocks in geometry processing algorithms due to its simplicity and provable guarantees. Although provably correct in infinite precision arithmetic, it fails in challenging cases when implemented using floating point arithmetic, largely due to the induced exponential ar...
journal
10.1145/3306346.3323012
official
null
null
10.1145/3306346.3323042
Deep inverse rendering for high-resolution SVBRDF estimation from an arbitrary number of images
https://doi.org/10.1145/3306346.3323042
[ "DUAN GAO", "Xiao Li", "Yue Dong", "Pieter Peers", "Kun Xu", "Xin Tong" ]
In this paper we present a unified deep inverse rendering framework for estimating the spatially-varying appearance properties of a planar exemplar from an arbitrary number of input photographs, ranging from just a single photograph to many photographs. The precision of the estimated appearance scales from plausible wh...
journal
10.1145/3306346.3323042
official
null
null
10.1145/3306346.3322940
Learning to fly: computational controller design for hybrid UAVs with reinforcement learning
https://doi.org/10.1145/3306346.3322940
[ "Jie Xu", "Tao Du", "Michael Foshey", "Beichen Li", "Bo Zhu", "Adriana Schulz", "Wojciech Matusik" ]
Hybrid unmanned aerial vehicles (UAV) combine advantages of multicopters and fixed-wing planes: vertical take-off, landing, and low energy use. However, hybrid UAVs are rarely used because controller design is challenging due to its complex, mixed dynamics. In this paper, we propose a method to automate this design pro...
journal
10.1145/3306346.3322940
official
null
null
10.1145/3306346.3323041
Photon surfaces for robust, unbiased volumetric density estimation
https://doi.org/10.1145/3306346.3323041
[ "Xi Deng", "Shaojie Jiao", "Benedikt Bitterli", "Wojciech Jarosz" ]
We generalize photon planes to photon surfaces : a new family of unbiased volumetric density estimators which we combine using multiple importance sampling. To derive our new estimators, we start with the extended path integral which duplicates the vertex at the end of the camera and photon subpaths and couples them us...
journal
10.1145/3306346.3323041
official
null
null
10.1145/3306346.3322952
RedMax: efficient & flexible approach for articulated dynamics
https://doi.org/10.1145/3306346.3322952
[ "Ying Wang", "Nicholas J. Weidner", "Margaret A. Baxter", "Yura Hwang", "Danny M. Kaufman", "Shinjiro Sueda" ]
It is well known that the dynamics of articulated rigid bodies can be solved in O (n) time using a recursive method, where n is the number of joints. However, when elasticity is added between the bodies (e.g. , damped springs), with linearly implicit integration, the stiffness matrix in the equations of motion breaks t...
journal
10.1145/3306346.3322952
official
null
null
10.1145/3306346.3322999
Learning character-agnostic motion for motion retargeting in 2D
https://doi.org/10.1145/3306346.3322999
[ "Kfir Aberman", "Rundi Wu", "Dani Lischinski", "Baoquan Chen", "Daniel Cohen-Or" ]
Analyzing human motion is a challenging task with a wide variety of applications in computer vision and in graphics. One such application, of particular importance in computer animation, is the retargeting of motion from one performer to another. While humans move in three dimensions, the vast majority of human motions...
journal
10.1145/3306346.3322999
official
1905.01680
title_snapshot
10.1145/3306346.3323027
Deep reflectance fields: high-quality facial reflectance field inference from color gradient illumination
https://doi.org/10.1145/3306346.3323027
[ "Abhimitra Meka", "Christian Häne", "Rohit Pandey", "Michael Zollhöfer", "Sean Fanello", "Graham Fyffe", "Adarsh Kowdle", "Xueming Yu", "Jay Busch", "Jason Dourgarian", "Peter Denny", "Sofien Bouaziz", "Peter Lincoln", "Matt Whalen", "Geoff Harvey", "Jonathan Taylor", "Shahram Izadi"...
We present a novel technique to relight images of human faces by learning a model of facial reflectance from a database of 4D reflectance field data of several subjects in a variety of expressions and viewpoints. Using our learned model, a face can be relit in arbitrary illumination environments using only two original...
journal
10.1145/3306346.3323027
official
null
null
10.1145/3306346.3323024
Handheld multi-frame super-resolution
https://doi.org/10.1145/3306346.3323024
[ "Bartlomiej Wronski", "Ignacio Garcia-Dorado", "Manfred Ernst", "Damien Kelly", "Michael Krainin", "Chia-Kai Liang", "Marc Levoy", "Peyman Milanfar" ]
Compared to DSLR cameras, smartphone cameras have smaller sensors, which limits their spatial resolution; smaller apertures, which limits their light gathering ability; and smaller pixels, which reduces their signal-to-noise ratio. The use of color filter arrays (CFAs) requires demosaicing, which further degrades resol...
journal
10.1145/3306346.3323024
official
1905.03277
title_snapshot
10.1145/3306346.3322977
Designing chain reaction contraptions from causal graphs
https://doi.org/10.1145/3306346.3322977
[ "Robin Roussel", "Marie-Paule Cani", "Jean-Claude Léon", "Niloy J. Mitra" ]
Chain reaction contraptions, commonly referred to as Rube Goldberg machines, achieve simple tasks in an intentionally complex fashion via a cascading sequence of events. They are fun, engaging and satisfying to watch. Physically realizing them, however, involves hours or even days of manual trial-and-error effort. The ...
journal
10.1145/3306346.3322977
official
null
null
10.1145/3306346.3323004
Surface2Volume: surface segmentation conforming assemblable volumetric partition
https://doi.org/10.1145/3306346.3323004
[ "Chrystiano Araújo", "Daniela Cabiddu", "Marco Attene", "Marco Livesu", "Nicholas Vining", "Alla Sheffer" ]
Users frequently seek to fabricate objects whose outer surfaces consist of regions with different surface attributes, such as color or material. Manufacturing such objects in a single piece is often challenging or even impossible. The alternative is to partition them into single-attribute volumetric parts that can be f...
journal
10.1145/3306346.3323004
official
1904.10213
title_snapshot
10.1145/3306346.3322949
CD-MPM: continuum damage material point methods for dynamic fracture animation
https://doi.org/10.1145/3306346.3322949
[ "Joshuah Wolper", "Yu Fang", "Minchen Li", "Jiecong Lu", "Ming Gao", "Chenfanfu Jiang" ]
We present two new approaches for animating dynamic fracture involving large elastoplastic deformation. In contrast to traditional mesh-based techniques, where sharp discontinuity is introduced to split the continuum at crack surfaces, our methods are based on Continuum Damage Mechanics (CDM) with a variational energy-...
journal
10.1145/3306346.3322949
official
null
null
10.1145/3306346.3322980
Local light field fusion: practical view synthesis with prescriptive sampling guidelines
https://doi.org/10.1145/3306346.3322980
[ "Ben Mildenhall", "Pratul P. Srinivasan", "Rodrigo Ortiz-Cayon", "Nima Khademi Kalantari", "Ravi Ramamoorthi", "Ren Ng", "Abhishek Kar" ]
We present a practical and robust deep learning solution for capturing and rendering novel views of complex real world scenes for virtual exploration. Previous approaches either require intractably dense view sampling or provide little to no guidance for how users should sample views of a scene to reliably render high-...
journal
10.1145/3306346.3322980
official
1905.00889
title_snapshot
10.1145/3306346.3323011
TriWild: robust triangulation with curve constraints
https://doi.org/10.1145/3306346.3323011
[ "Yixin Hu", "Teseo Schneider", "Xifeng Gao", "Qingnan Zhou", "Alec Jacobson", "Denis Zorin", "Daniele Panozzo" ]
We propose a robust 2D meshing algorithm, TriWild , to generate curved triangles reproducing smooth feature curves, leading to coarse meshes designed to match the simulation requirements necessary by applications and avoiding the geometrical errors introduced by linear meshes. The robustness and effectiveness of our te...
journal
10.1145/3306346.3323011
official
null
null
10.1145/3306346.3323008
Single image portrait relighting
https://doi.org/10.1145/3306346.3323008
[ "Tiancheng Sun", "Jonathan T. Barron", "Yun-Ta Tsai", "Zexiang Xu", "Xueming Yu", "Graham Fyffe", "Christoph Rhemann", "Jay Busch", "Paul Debevec", "Ravi Ramamoorthi" ]
Lighting plays a central role in conveying the essence and depth of the subject in a portrait photograph. Professional photographers will carefully control the lighting in their studio to manipulate the appearance of their subject, while consumer photographers are usually constrained to the illumination of their enviro...
journal
10.1145/3306346.3323008
official
1905.00824
title_snapshot
10.1145/3306346.3322950
A Monte Carlo framework for rendering speckle statistics in scattering media
https://doi.org/10.1145/3306346.3322950
[ "Chen Bar", "Marina Alterman", "Ioannis Gkioulekas", "Anat Levin" ]
We present a Monte Carlo rendering framework for the physically-accurate simulation of speckle patterns arising from volumetric scattering of coherent waves. These noise-like patterns are characterized by strong statistical properties, such as the so-called memory effect. These properties are at the core of imaging tec...
journal
10.1145/3306346.3322950
official
1901.06931
title_snapshot
10.1145/3306346.3322970
SurfaceBrush: from virtual reality drawings to manifold surfaces
https://doi.org/10.1145/3306346.3322970
[ "Enrique Rosales", "Jafet Rodriguez", "ALLA SHEFFER" ]
Popular Virtual Reality (VR) tools allow users to draw varying-width, ribbonlike 3D brush strokes by moving a hand-held controller in 3D space. Artists frequently use dense collections of such strokes to draw virtual 3D shapes. We propose SurfaceBrush , a surfacing method that converts such VR drawings into user-intend...
journal
10.1145/3306346.3322970
official
1904.12297
title_snapshot
10.1145/3306346.3323019
Parametrization quantization with free boundaries for trimmed quad meshing
https://doi.org/10.1145/3306346.3323019
[ "Max Lyon", "Marcel Campen", "David Bommes", "Leif Kobbelt" ]
The generation of quad meshes based on surface parametrization techniques has proven to be a versatile approach. These techniques quantize an initial seamless parametrization so as to obtain an integer grid map implying a pure quad mesh. State-of-the-art methods following this approach have to assume that the surface t...
journal
10.1145/3306346.3323019
official
null
null
10.1145/3306346.3322979
Navigating intrinsic triangulations
https://doi.org/10.1145/3306346.3322979
[ "Nicholas Sharp", "Yousuf Soliman", "Keenan Crane" ]
We present a data structure that makes it easy to run a large class of algorithms from computational geometry and scientific computing on extremely poor-quality surface meshes. Rather than changing the geometry, as in traditional remeshing, we consider intrinsic triangulations which connect vertices by straight paths a...
journal
10.1145/3306346.3322979
official
null
null
10.1145/3306346.3322990
Procedural phasor noise
https://doi.org/10.1145/3306346.3322990
[ "Thibault Tricard", "Semyon Efremov", "Cédric Zanni", "Fabrice Neyret", "Jonàs Martínez", "Sylvain Lefebvre" ]
Procedural pattern synthesis is a fundamental tool of Computer Graphics, ubiquitous in games and special effects. By calling a single procedure in every pixel - or voxel - large quantities of details are generated at low cost, enhancing textures, producing complex structures within and along surfaces. Such procedures a...
journal
10.1145/3306346.3322990
official
null
null
10.1145/3306346.3323030
VR facial animation via multiview image translation
https://doi.org/10.1145/3306346.3323030
[ "Shih-En Wei", "Jason Saragih", "Tomas Simon", "Adam W. Harley", "Stephen Lombardi", "Michal Perdoch", "Alexander Hypes", "Dawei Wang", "Hernan Badino", "Yaser Sheikh" ]
A key promise of Virtual Reality (VR) is the possibility of remote social interaction that is more immersive than any prior telecommunication media. However, existing social VR experiences are mediated by inauthentic digital representations of the user (i.e., stylized avatars). These stylized representations have limit...
journal
10.1145/3306346.3323030
official
null
null
10.1145/3306346.3322985
Luminance-contrast-aware foveated rendering
https://doi.org/10.1145/3306346.3322985
[ "Okan Tarhan Tursun", "Elena Arabadzhiyska-Koleva", "Marek Wernikowski", "Radosław Mantiuk", "Hans-Peter Seidel", "Karol Myszkowski", "Piotr Didyk" ]
Current rendering techniques struggle to fulfill quality and power efficiency requirements imposed by new display devices such as virtual reality headsets. A promising solution to overcome these problems is foveated rendering, which exploits gaze information to reduce rendering quality for the peripheral vision where t...
journal
10.1145/3306346.3322985
official
null
null
10.1145/3306346.3322973
On the accurate large-scale simulation of ferrofluids
https://doi.org/10.1145/3306346.3322973
[ "Libo Huang", "Torsten Hädrich", "Dominik L. Michels" ]
We present an approach to the accurate and efficient large-scale simulation of the complex dynamics of ferrofluids based on physical principles. Ferrofluids are liquids containing magnetic particles that react to an external magnetic field without solidifying. In this contribution, we employ smooth magnets to simulate ...
journal
10.1145/3306346.3322973
official
null
null
10.1145/3306346.3322978
Creating impactful characters: correcting human impact accelerations using high rate IMUs in dynamic activities
https://doi.org/10.1145/3306346.3322978
[ "Calvin Kuo", "Ziheng Liang", "Ye Fan", "Jean-Sébastien Blouin", "Dinesh K. Pai" ]
Human motion capture using video-based or sensor-based methods gives animators the capability to directly translate complex human motions to create lifelike character animations. Advances in motion capture algorithms have improved their accuracy for estimating human generalized motion coordinates (joint angles and body...
journal
10.1145/3306346.3322978
official
null
null
10.1145/3306346.3322968
Silly rubber: an implicit material point method for simulating non-equilibrated viscoelastic and elastoplastic solids
https://doi.org/10.1145/3306346.3322968
[ "Yu Fang", "Minchen Li", "Ming Gao", "Chenfanfu Jiang" ]
Simulating viscoelastic polymers and polymeric fluids requires a robust and accurate capture of elasticity and viscosity. The computation is known to become very challenging under large deformations and high viscosity. Drawing inspirations from return mapping based elastoplasticity treatment for granular materials, we ...
journal
10.1145/3306346.3322968
official
null
null
10.1145/3306346.3323035
Deferred neural rendering: image synthesis using neural textures
https://doi.org/10.1145/3306346.3323035
[ "Justus Thies", "Michael Zollhöfer", "Matthias Nießner" ]
The modern computer graphics pipeline can synthesize images at remarkable visual quality; however, it requires well-defined, high-quality 3D content as input. In this work, we explore the use of imperfect 3D content, for instance, obtained from photo-metric reconstructions with noisy and incomplete surface geometry, wh...
journal
10.1145/3306346.3323035
official
1904.12356
title_snapshot
10.1145/3306346.3323038
Deep convolutional reconstruction for gradient-domain rendering
https://doi.org/10.1145/3306346.3323038
[ "Markus Kettunen", "Erik Härkönen", "Jaakko Lehtinen" ]
It has been shown that rendering in the gradient domain, i.e., estimating finite difference gradients of image intensity using correlated samples, and combining them with direct estimates of pixel intensities by solving a screened Poisson problem, often offers fundamental benefits over merely sampling pixel intensities...
journal
10.1145/3306346.3323038
official
null
null
10.1145/3306346.3322946
Compact snapshot hyperspectral imaging with diffracted rotation
https://doi.org/10.1145/3306346.3322946
[ "Daniel S. Jeon", "Seung-Hwan Baek", "Shinyoung Yi", "Qiang Fu", "Xiong Dun", "Wolfgang Heidrich", "Min H. Kim" ]
Traditional snapshot hyperspectral imaging systems include various optical elements: a dispersive optical element (prism), a coded aperture, several relay lenses, and an imaging lens, resulting in an impractically large form factor. We seek an alternative, minimal form factor of snapshot spectral imaging based on recen...
journal
10.1145/3306346.3322946
official
null
null
10.1145/3306346.3323009
Optimal multiple importance sampling
https://doi.org/10.1145/3306346.3323009
[ "Ivo Kondapaneni", "Petr Vevoda", "Pascal Grittmann", "Tomáš Skřivan", "Philipp Slusallek", "Jaroslav Křivánek" ]
Multiple Importance Sampling (MIS) is a key technique for achieving robustness of Monte Carlo estimators in computer graphics and other fields. We derive optimal weighting functions for MIS that provably minimize the variance of an MIS estimator, given a set of sampling techniques. We show that the resulting variance r...
journal
10.1145/3306346.3323009
official
null
null
10.1145/3306346.3322963
Physics-based full-body soccer motion control for dribbling and shooting
https://doi.org/10.1145/3306346.3322963
[ "Seokpyo Hong", "Daseong Han", "Kyungmin Cho", "Joseph S. Shin", "Junyong Noh" ]
Playing with a soccer ball is not easy even for a real human because of dynamic foot contacts with the moving ball while chasing and controlling it. The problem of online full-body soccer motion synthesis is challenging and has not been fully solved yet. In this paper, we present a novel motion control system that prod...
journal
10.1145/3306346.3322963
official
null
null
10.1145/3306346.3322945
Efficient and conservative fluids using bidirectional mapping
https://doi.org/10.1145/3306346.3322945
[ "Ziyin Qu", "Xinxin Zhang", "Ming Gao", "Chenfanfu Jiang", "Baoquan Chen" ]
In this paper, we introduce BiMocq 2 , an unconditionally stable, pure Eulerianbased advection scheme to efficiently preserve the advection accuracy of all physical quantities for long-term fluid simulations. Our approach is built upon the method of characteristic mapping (MCM). Instead of the costly evaluation of the ...
journal
10.1145/3306346.3322945
official
null
null
10.1145/3306346.3323023
Semantic photo manipulation with a generative image prior
https://doi.org/10.1145/3306346.3323023
[ "David Bau", "Hendrik Strobelt", "William Peebles", "Jonas Wulff", "Bolei Zhou", "Jun-Yan Zhu", "Antonio Torralba" ]
Despite the recent success of GANs in synthesizing images conditioned on inputs such as a user sketch, text, or semantic labels, manipulating the high-level attributes of an existing natural photograph with GANs is challenging for two reasons. First, it is hard for GANs to precisely reproduce an input image. Second, af...
journal
10.1145/3306346.3323023
official
2005.07727
title_snapshot