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Endless loops: detecting and animating periodic patterns in still images
https://doi.org/10.1145/3450626.3459935
[ "Tavi Halperin", "Hanit Hakim", "Orestis Vantzos", "Gershon Hochman", "Netai Benaim", "Lior Sassy", "Michael Kupchik", "Ofir Bibi", "Ohad Fried" ]
We present an algorithm for producing a seamless animated loop from a single image. The algorithm detects periodic structures, such as the windows of a building or the steps of a staircase, and generates a non-trivial displacement vector field that maps each segment of the structure onto a neighboring segment along a u...
journal
10.1145/3450626.3459935
2105.09374
title_snapshot
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Modeling and fabrication with specified discrete equivalence classes
https://doi.org/10.1145/3450626.3459843
[ "Zhong-Yuan Liu", "Zhan Zhang", "Di Zhang", "Chunyang Ye", "Ligang Liu", "Xiao-Ming Fu" ]
We propose a novel method to model and fabricate shapes using a small set of specified discrete equivalence classes of triangles. The core of our modeling technique is a fabrication-error-driven remeshing algorithm. Given a triangle and a template triangle, which are coplanar and have one-to-one corresponding vertices,...
journal
10.1145/3450626.3459843
null
null
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Learning skeletal articulations with neural blend shapes
https://doi.org/10.1145/3450626.3459852
[ "Peizhuo Li", "Kfir Aberman", "Rana Hanocka", "Libin Liu", "Olga Sorkine-Hornung", "Baoquan Chen" ]
Animating a newly designed character using motion capture (mocap) data is a long standing problem in computer animation. A key consideration is the skeletal structure that should correspond to the available mocap data, and the shape deformation in the joint regions, which often requires a tailored, pose-specific refine...
journal
10.1145/3450626.3459852
2105.02451
title_snapshot
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A generic framework for physical light transport
https://doi.org/10.1145/3450626.3459791
[ "Shlomi Steinberg", "Ling-Qi Yan" ]
Physically accurate rendering often calls for taking the wave nature of light into consideration. In computer graphics, this is done almost exclusively locally, i.e. on a micrometre scale where the diffractive phenomena arise. However, the statistical properties of light, that dictate its coherence characteristics and ...
journal
10.1145/3450626.3459791
null
null
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Path replay backpropagation: differentiating light paths using constant memory and linear time
https://doi.org/10.1145/3450626.3459804
[ "Delio Vicini", "Sébastien Speierer", "Wenzel Jakob" ]
Differentiable physically-based rendering has become an indispensable tool for solving inverse problems involving light. Most applications in this area jointly optimize a large set of scene parameters to minimize an objective function, in which case reverse-mode differentiation is the method of choice for obtaining par...
journal
10.1145/3450626.3459804
null
null
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Discovering diverse athletic jumping strategies
https://doi.org/10.1145/3450626.3459817
[ "Zhiqi Yin", "Zeshi Yang", "Michiel Van De Panne", "Kangkang Yin" ]
We present a framework that enables the discovery of diverse and natural-looking motion strategies for athletic skills such as the high jump. The strategies are realized as control policies for physics-based characters. Given a task objective and an initial character configuration, the combination of physics simulation...
journal
10.1145/3450626.3459817
2105.00371
title_snapshot
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Physical validation of simulators in computer graphics: a new framework dedicated to slender elastic structures and frictional contact
https://doi.org/10.1145/3450626.3459931
[ "Victor Romero", "Mickaël Ly", "Abdullah Haroon Rasheed", "Raphaël Charrondière", "Arnaud Lazarus", "Sébastien Neukirch", "Florence Bertails-Descoubes" ]
We introduce a selected set of protocols inspired from the Soft Matter Physics community in order to validate Computer Graphics simulators of slender elastic structures possibly subject to dry frictional contact. Although these simulators were primarily intended for feature film animation and visual effects, they are m...
journal
10.1145/3450626.3459931
null
null
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Unsupervised learning for cuboid shape abstraction via joint segmentation from point clouds
https://doi.org/10.1145/3450626.3459873
[ "Kaizhi Yang", "Xuejin Chen" ]
Representing complex 3D objects as simple geometric primitives, known as shape abstraction, is important for geometric modeling, structural analysis, and shape synthesis. In this paper, we propose an unsupervised shape abstraction method to map a point cloud into a compact cuboid representation. We jointly predict cubo...
journal
10.1145/3450626.3459873
2106.03437
title_snapshot
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An inverse method for the exploration of layered material appearance
https://doi.org/10.1145/3450626.3459857
[ "Mégane Bati", "Pascal Barla", "Romain Pacanowski" ]
Layered materials exhibit a wide range of appearance, due to the combined effects of absorption and scattering at and between interfaces. Yet most existing approaches let users set the physical parameters of all layers by hand, a process of trial and error. We introduce an inverse method that provides control over BRDF...
journal
10.1145/3450626.3459857
null
null
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Optimizing UI layouts for deformable face-rig manipulation
https://doi.org/10.1145/3450626.3459842
[ "Joonho Kim", "Karan Singh" ]
Complex deformable face-rigs have many independent parameters that control the shape of the object. A human face has upwards of 50 parameters (FACS Action Units), making conventional UI controls hard to find and operate. Animators address this problem by tediously hand-crafting in-situ layouts of UI controls that serve...
journal
10.1145/3450626.3459842
null
null
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The shape matching element method: direct animation of curved surface models
https://doi.org/10.1145/3450626.3459772
[ "Ty Trusty", "Honglin Chen", "David I. W. Levin" ]
We introduce a new method for direct physics-based animation of volumetric curved models, represented using NURBS surfaces. Our technical contribution is the Shape Matching Element Method (SEM). SEM is a completely meshless algorithm, the first to simultaneously be robust to gaps and overlaps in geometry, be compatible...
journal
10.1145/3450626.3459772
null
null
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Fast median filters using separable sorting networks
https://doi.org/10.1145/3450626.3459773
[ "Andrew Adams" ]
Median filters are a widely-used tool in graphics, imaging, machine learning, visual effects, and even audio processing. Currently, very-small-support median filters are performed using sorting networks, and large-support median filters are handled by O (1) histogram-based methods. However, the constant factor on these...
journal
10.1145/3450626.3459773
null
null
[ -0.016619140282273293, -0.003536389907822013, -0.015340359881520271, 0.023723121732473373, 0.024916501715779305, 0.04002527520060539, -0.01652706041932106, 0.008527395315468311, -0.05626269057393074, -0.08086469769477844, 0.005888361483812332, -0.03274746984243393, -0.06086115539073944, 0....
Using isometries for computational design and fabrication
https://doi.org/10.1145/3450626.3459839
[ "Caigui Jiang", "Hui Wang", "Victor Ceballos Inza", "Felix Dellinger", "Florian Rist", "Johannes Wallner", "Helmut Pottmann" ]
We solve the task of representing free forms by an arrangement of panels that are manufacturable by precise isometric bending of surfaces made from a small number of molds. In fact we manage to solve the paneling task with surfaces of constant Gaussian curvature alone. This includes the case of developable surfaces whi...
journal
10.1145/3450626.3459839
null
null
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Kelvin transformations for simulations on infinite domains
https://doi.org/10.1145/3450626.3459809
[ "Mohammad Sina Nabizadeh", "Ravi Ramamoorthi", "Albert Chern" ]
Solving partial differential equations (PDEs) on infinite domains has been a challenging task in physical simulations and geometry processing. We introduce a general technique to transform a PDE problem on an unbounded domain to a PDE problem on a bounded domain. Our method uses the Kelvin Transform, which essentially ...
journal
10.1145/3450626.3459809
null
null
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Fusion 360 gallery: a dataset and environment for programmatic CAD construction from human design sequences
https://doi.org/10.1145/3450626.3459818
[ "Karl D. D. Willis", "Yewen Pu", "Jieliang Luo", "Hang Chu", "Tao Du", "Joseph G. Lambourne", "Armando Solar-Lezama", "Wojciech Matusik" ]
Parametric computer-aided design (CAD) is a standard paradigm used to design manufactured objects, where a 3D shape is represented as a program supported by the CAD software. Despite the pervasiveness of parametric CAD and a growing interest from the research community, currently there does not exist a dataset of reali...
journal
10.1145/3450626.3459818
2010.02392
title_snapshot
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DAG amendment for inverse control of parametric shapes
https://doi.org/10.1145/3450626.3459823
[ "Élie Michel", "Tamy Boubekeur" ]
Parametric shapes model objects as programs producing a geometry based on a few semantic degrees of freedom, called hyper-parameters. These shapes are the typical output of non-destructive modeling, CAD modeling or rigging. However they suffer from the core issue of being manipulated only indirectly, through a series o...
journal
10.1145/3450626.3459823
null
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Video recoloring via spatial-temporal geometric palettes
https://doi.org/10.1145/3450626.3459675
[ "Zheng-Jun Du", "Kai-Xiang Lei", "Kun Xu", "Jianchao Tan", "Yotam Gingold" ]
Color correction and color grading are important steps in film production. Recent palette-based approaches to image recoloring have shown that a small set of representative colors provide an intuitive set of handles for color adjustment. However, a single, static palette cannot represent the time-varying colors in a vi...
journal
10.1145/3450626.3459675
null
null
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Weakly-supervised contrastive learning in path manifold for Monte Carlo image reconstruction
https://doi.org/10.1145/3450626.3459876
[ "In-Young Cho", "Yuchi Huo", "Sung-Eui Yoon" ]
Image-space auxiliary features such as surface normal have significantly contributed to the recent success of Monte Carlo (MC) reconstruction networks. However, path-space features, another essential piece of light propagation, have not yet been sufficiently explored. Due to the curse of dimensionality, information flo...
journal
10.1145/3450626.3459876
null
null
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Neural animation layering for synthesizing martial arts movements
https://doi.org/10.1145/3450626.3459881
[ "Sebastian Starke", "Yiwei Zhao", "Fabio Zinno", "Taku Komura" ]
Interactively synthesizing novel combinations and variations of character movements from different motion skills is a key problem in computer animation. In this paper, we propose a deep learning framework to produce a large variety of martial arts movements in a controllable manner from raw motion capture data. Our met...
journal
10.1145/3450626.3459881
null
null
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Surface multigrid via intrinsic prolongation
https://doi.org/10.1145/3450626.3459768
[ "Hsueh-Ti Derek Liu", "Jiayi Eris Zhang", "Mirela Ben-Chen", "Alec Jacobson" ]
This paper introduces a novel geometric multigrid solver for unstructured curved surfaces. Multigrid methods are highly efficient iterative methods for solving systems of linear equations. Despite the success in solving problems defined on structured domains, generalizing multigrid to unstructured curved domains remain...
journal
10.1145/3450626.3459768
2104.13755
title_snapshot
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A time-independent deformer for elastic contacts
https://doi.org/10.1145/3450626.3459879
[ "Camille Brunel", "Pierre Bénard", "Gaël Guennebaud" ]
We present a purely geometric, time-independent deformer resolving local contacts between elastic objects, including self-collisions between adjacent parts of the same object that often occur in character skinning animation. Starting from multiple meshes in intersection, our deformer first computes the parts of the sur...
journal
10.1145/3450626.3459879
null
null
[ -0.01032878179103136, 0.0068622468970716, 0.0013091540895402431, 0.0032072861213237047, 0.04045518860220909, 0.06719601899385452, -0.0024036888498812914, 0.02573907934129238, -0.032690562307834625, -0.09026231616735458, -0.017850877717137337, -0.012885740026831627, -0.032242998480796814, -...
Multiscale Cholesky preconditioning for ill-conditioned problems
https://doi.org/10.1145/3450626.3459851
[ "Jiong Chen", "Florian Schäfer", "Jin Huang", "Mathieu Desbrun" ]
Many computer graphics applications boil down to solving sparse systems of linear equations. While the current arsenal of numerical solvers available in various specialized libraries and for different computer architectures often allow efficient and scalable solutions to image processing, modeling and simulation applic...
journal
10.1145/3450626.3459851
null
null
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NeuMIP: multi-resolution neural materials
https://doi.org/10.1145/3450626.3459795
[ "Alexandr Kuznetsov", "Krishna Mullia", "Zexiang Xu", "Miloš Hašan", "Ravi Ramamoorthi" ]
We propose NeuMIP, a neural method for representing and rendering a variety of material appearances at different scales. Classical prefiltering (mipmapping) methods work well on simple material properties such as diffuse color, but fail to generalize to normals, self-shadowing, fibers or more complex microstructures an...
journal
10.1145/3450626.3459795
2104.02789
title_snapshot
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Acorn: adaptive coordinate networks for neural scene representation
https://doi.org/10.1145/3450626.3459785
[ "Julien N. P. Martel", "David B. Lindell", "Connor Z. Lin", "Eric R. Chan", "Marco Monteiro", "Gordon Wetzstein" ]
Neural representations have emerged as a new paradigm for applications in rendering, imaging, geometric modeling, and simulation. Compared to traditional representations such as meshes, point clouds, or volumes they can be flexibly incorporated into differentiable learning-based pipelines. While recent improvements to ...
journal
10.1145/3450626.3459785
2105.02788
title_snapshot
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General virtual sketching framework for vector line art
https://doi.org/10.1145/3450626.3459833
[ "Haoran Mo", "Edgar Simo-Serra", "Chengying Gao", "Changqing Zou", "Ruomei Wang" ]
Vector line art plays an important role in graphic design, however, it is tedious to manually create. We introduce a general framework to produce line drawings from a wide variety of images, by learning a mapping from raster image space to vector image space. Our approach is based on a recurrent neural network that dra...
journal
10.1145/3450626.3459833
null
null
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Monte Carlo estimators for differential light transport
https://doi.org/10.1145/3450626.3459807
[ "Tizian Zeltner", "Sébastien Speierer", "Iliyan Georgiev", "Wenzel Jakob" ]
Physically based differentiable rendering algorithms propagate derivatives through realistic light transport simulations and have applications in diverse areas including inverse reconstruction and machine learning. Recent progress has led to unbiased methods that can simultaneously compute derivatives with respect to m...
journal
10.1145/3450626.3459807
null
null
[ -0.009622899815440178, 0.019805775955319405, 0.012244122102856636, 0.04282749071717262, 0.05140575394034386, 0.015137293376028538, 0.013408194296061993, -0.017977390438318253, -0.02914363332092762, -0.0678483247756958, 0.010330777615308762, -0.011264917440712452, -0.04028092324733734, 0.03...
Designing actuation systems for animatronic figures via globally optimal discrete search
https://doi.org/10.1145/3450626.3459867
[ "Simon Huber", "Roi Poranne", "Stelian Coros" ]
We present an algorithmic approach to designing animatronic figures - expressive robotic characters whose movements are driven by a large number of actuators. The input to our design system provides a high-level specification of the space of motions the character should be able to perform. The output consists of a full...
journal
10.1145/3450626.3459867
null
null
[ -0.031668536365032196, -0.007386434823274612, -0.010580973699688911, 0.03872106969356537, 0.026882657781243324, 0.03838777169585228, 0.0001573469489812851, -0.011245820671319962, -0.02425714209675789, -0.04961349442601204, -0.03228307515382767, -0.020782874897122383, -0.05660345032811165, ...
A fitted radiance and attenuation model for realistic atmospheres
https://doi.org/10.1145/3450626.3459758
[ "Alexander Wilkie", "Petr Vevoda", "Thomas Bashford-Rogers", "Lukáš Hošek", "Tomáš Iser", "Monika Kolářová", "Tobias Rittig", "Jaroslav Křivánek" ]
We present a fitted model of sky dome radiance and attenuation for realistic terrestrial atmospheres. Using scatterer distribution data from atmospheric measurement data, our model considerably improves on the visual realism of existing analytical clear sky models, as well as of interactive methods that are based on ap...
journal
10.1145/3450626.3459758
null
null
[ 0.03372037038207054, -0.004963024985045195, -0.00007850984547985718, -0.011723844334483147, 0.04093612730503082, 0.026457058265805244, 0.0051773241721093655, 0.0029721271712332964, -0.04405627399682999, -0.07252214103937149, -0.04932250455021858, 0.007307303138077259, -0.0696273222565651, ...
Stream-guided smoke simulations
https://doi.org/10.1145/3450626.3459846
[ "Syuhei Sato", "Yoshinori Dobashi", "Theodore Kim" ]
High-resolution fluid simulations are computationally expensive, so many post-processing methods have been proposed to add turbulent details to low-resolution flows. Guiding methods are one promising approach for adding naturalistic, detailed motions as a post-process, but can be inefficient. Thus, we propose a novel, ...
journal
10.1145/3450626.3459846
null
null
[ -0.012029161676764488, 0.0016503713559359312, 0.004671372473239899, 0.028218716382980347, 0.039952121675014496, 0.024982541799545288, 0.0066049969755113125, -0.019897373393177986, -0.03542593494057655, -0.05713464319705963, -0.028998490422964096, -0.016371406614780426, -0.03874709829688072, ...
SWAGAN: a style-based wavelet-driven generative model
https://doi.org/10.1145/3450626.3459836
[ "Rinon Gal", "Dana Cohen Hochberg", "Amit Bermano", "Daniel Cohen-Or" ]
In recent years, considerable progress has been made in the visual quality of Generative Adversarial Networks (GANs). Even so, these networks still suffer from degradation in quality for high-frequency content, stemming from a spectrally biased architecture, and similarly unfavorable loss functions. To address this iss...
journal
10.1145/3450626.3459836
2102.06108
title_snapshot
[ -0.0016405372880399227, -0.04529714956879616, 0.016426103189587593, 0.03774801641702652, -0.0027690839488059282, 0.0019851201213896275, -0.0005891005857847631, -0.005822577979415655, -0.027194006368517876, -0.07201825082302094, -0.013741101138293743, 0.0034247590228915215, -0.057317439466714...
Eliminating topological errors in neural network rotation estimation using self-selecting ensembles
https://doi.org/10.1145/3450626.3459882
[ "Sitao Xiang" ]
Many problems in computer graphics and computer vision applications involves inferring a rotation from a variety of different forms of inputs. With the increasing use of deep learning, neural networks have been employed to solve such problems. However, the traditional representations for 3D rotations, the quaternions a...
journal
10.1145/3450626.3459882
null
null
[ -0.01406270731240511, 0.000970344350207597, -0.0029533097986131907, 0.0238222386687994, 0.009878454729914665, 0.04668745771050453, 0.019204720854759216, 0.007273293100297451, -0.02427329495549202, -0.057935409247875214, -0.02877761609852314, -0.014049418270587921, -0.07166609913110733, 0.0...
Constrained projective dynamics: real-time simulation of deformable objects with energy-momentum conservation
https://doi.org/10.1145/3450626.3459878
[ "Min Hyung Kee", "Kiwon Um", "Wooseok Jeong", "Junghyun Han" ]
This paper proposes a novel energy-momentum conserving integration method. Adopting Projective Dynamics, the proposed method extends its unconstrained minimization for time integration into the constrained form with the position-based energy-momentum constraints. This resolves the well-known problem of unwanted dissipa...
journal
10.1145/3450626.3459878
null
null
[ -0.04692414402961731, -0.00467609241604805, -0.0038068753201514482, 0.025201482698321342, 0.025256048887968063, 0.0303665678948164, -0.0014851221349090338, 0.017367713153362274, -0.05520717427134514, -0.06588295847177505, -0.029939914122223854, -0.044775646179914474, -0.05692175403237343, ...
Pareto gamuts: exploring optimal designs across varying contexts
https://doi.org/10.1145/3450626.3459750
[ "Liane Makatura", "Minghao Guo", "Adriana Schulz", "Justin Solomon", "Wojciech Matusik" ]
Manufactured parts are meticulously engineered to perform well with respect to several conflicting metrics, like weight, stress, and cost. The best achievable trade-offs reside on the Pareto front , which can be discovered via performance-driven optimization. The objectives that define this Pareto front often incorpora...
journal
10.1145/3450626.3459750
null
null
[ -0.01031782291829586, 0.008771887980401516, -0.006766754202544689, 0.025765109807252884, 0.042718298733234406, 0.0469529815018177, 0.0063577089458703995, 0.001483661588281393, -0.018779762089252472, -0.03741365671157837, -0.018342934548854828, 0.0038590573240071535, -0.03986285999417305, 0...
Tracing versus freehand for evaluating computer-generated drawings
https://doi.org/10.1145/3450626.3459819
[ "Zeyu Wang", "Sherry Qiu", "Nicole Feng", "Holly Rushmeier", "Leonard McMillan", "Julie Dorsey" ]
Non-photorealistic rendering (NPR) and image processing algorithms are widely assumed as a proxy for drawing. However, this assumption is not well assessed due to the difficulty in collecting and registering freehand drawings. Alternatively, tracings are easier to collect and register, but there is no quantitative eval...
journal
10.1145/3450626.3459819
null
null
[ 0.0008541035931557417, -0.016189198940992355, 0.005000792443752289, 0.010444391518831253, 0.03981366381049156, 0.006798093672841787, 0.02230970561504364, 0.025573687627911568, -0.048576805740594864, -0.07726191729307175, -0.0012973403790965676, -0.04278837516903877, -0.05499972775578499, 0...
Total relighting: learning to relight portraits for background replacement
https://doi.org/10.1145/3450626.3459872
[ "Rohit Pandey", "Sergio Orts Escolano", "Chloe Legendre", "Christian Häne", "Sofien Bouaziz", "Christoph Rhemann", "Paul Debevec", "Sean Fanello" ]
We propose a novel system for portrait relighting and background replacement, which maintains high-frequency boundary details and accurately synthesizes the subject's appearance as lit by novel illumination, thereby producing realistic composite images for any desired scene. Our technique includes foreground estimation...
journal
10.1145/3450626.3459872
null
null
[ 0.032342713326215744, -0.017125841230154037, -0.012378941290080547, 0.018967365846037865, 0.04269910231232643, 0.00027469315682537854, 0.032560236752033234, 0.015161831863224506, -0.04305955395102501, -0.06523612886667252, -0.05870895832777023, -0.014105663634836674, -0.0724526196718216, -...
Incompressible flow simulation on vortex segment clouds
https://doi.org/10.1145/3450626.3459865
[ "Shiying Xiong", "Rui Tao", "Yaorui Zhang", "Fan Feng", "Bo Zhu" ]
We propose a novel Lagrangian geometric representation using segment clouds to simulate incompressible fluid exhibiting strong anisotropic vortical features. The central component of our approach is a cloud of discrete segments enhanced by a set of local segment reseeding operations to facilitate both the geometrical e...
journal
10.1145/3450626.3459865
null
null
[ -0.01928437314927578, -0.028586704283952713, 0.011469698511064053, 0.039748333394527435, 0.022445572540163994, 0.021087488159537315, 0.026280643418431282, 0.02770427241921425, -0.05992674082517624, -0.06944632530212402, -0.03483707830309868, -0.07394042611122131, -0.045966051518917084, 0.0...
Neural complex luminaires: representation and rendering
https://doi.org/10.1145/3450626.3459798
[ "Junqiu Zhu", "Yaoyi Bai", "Zilin Xu", "Steve Bako", "Edgar Velázquez-Armendáriz", "Lu Wang", "Pradeep Sen", "Miloš Hašan", "Ling-Qi Yan" ]
Complex luminaires, such as grand chandeliers, can be extremely costly to render because the light-emitting sources are typically encased in complex refractive geometry, creating difficult light paths that require many samples to evaluate with Monte Carlo approaches. Previous work has attempted to speed up this process...
journal
10.1145/3450626.3459798
null
null
[ 0.0037432180251926184, 0.005171324126422405, 0.017154328525066376, 0.019394097849726677, 0.03668578714132309, 0.01577555201947689, -0.00832660123705864, 0.009349209256470203, -0.04334205389022827, -0.058589037507772446, -0.006275491323322058, -0.020682623609900475, -0.044711947441101074, 0...
Computational inverse design of surface-based inflatables
https://doi.org/10.1145/3450626.3459789
[ "Julian Panetta", "Florin Isvoranu", "Tian Chen", "Emmanuel Siéfert", "Benoît Roman", "Mark Pauly" ]
We present a computational inverse design method for a new class of surface-based inflatable structure. Our deployable structures are fabricated by fusing together two layers of inextensible sheet material along carefully selected curves. The fusing curves form a network of tubular channels that can be inflated with ai...
journal
10.1145/3450626.3459789
null
null
[ -0.00480270478874445, 0.0097114946693182, -0.01983041688799858, 0.0024910790380090475, 0.08110706508159637, 0.03727798908948898, -0.025735633447766304, -0.012956103309988976, -0.03776579722762108, -0.055243056267499924, -0.01115668285638094, -0.028061464428901672, -0.02527489699423313, 0.0...
Bistable auxetic surface structures
https://doi.org/10.1145/3450626.3459940
[ "Tian Chen", "Julian Panetta", "Max Schnaubelt", "Mark Pauly" ]
We present Bistable Auxetic Surface Structures , a novel deployable material system based on optimized bistable auxetic cells. Such a structure can be flat-fabricated from elastic sheet material, then deployed towards a desired double-curved target shape by activating the bistable mechanism of its component cells. A un...
journal
10.1145/3450626.3459940
null
null
[ -0.03075750544667244, 0.0063674296252429485, -0.01245372835546732, -0.0042674546130001545, 0.04162825644016266, 0.042055197060108185, 0.00762753002345562, -0.002116843592375517, -0.04555974528193474, -0.06849856674671173, 0.015320094302296638, -0.014223258942365646, -0.023448500782251358, ...
WRAPD: weighted rotation-aware ADMM for parameterization and deformation
https://doi.org/10.1145/3450626.3459942
[ "George E. Brown", "Rahul Narain" ]
Local-global solvers such as ADMM for elastic simulation and geometry optimization struggle to resolve large rotations such as bending and twisting modes, and large distortions in the presence of barrier energies. We propose two improvements to address these challenges. First, we introduce a novel local-global splittin...
journal
10.1145/3450626.3459942
null
null
[ -0.027667799964547157, -0.011684566736221313, 0.010965170338749886, 0.018621565774083138, 0.019507598131895065, 0.07380463182926178, 0.015001061372458935, -0.037474870681762695, -0.04038337245583534, -0.07426613569259644, -0.01314393337816, -0.02565845102071762, -0.04412781074643135, 0.002...
Thin-film smoothed particle hydrodynamics fluid
https://doi.org/10.1145/3450626.3459864
[ "Mengdi Wang", "Yitong Deng", "Xiangxin Kong", "Aditya H. Prasad", "Shiying Xiong", "Bo Zhu" ]
We propose a particle-based method to simulate thin-film fluid that jointly facilitates aggressive surface deformation and vigorous tangential flows. We build our dynamics model from the surface tension driven Navier-Stokes equation with the dimensionality reduced using the asymptotic lubrication theory and customize a...
journal
10.1145/3450626.3459864
2105.07656
title_snapshot
[ -0.028018740937113762, -0.001676010899245739, 0.03621673956513405, 0.0069593992084264755, 0.02692767232656479, 0.027492206543684006, -0.007400546222925186, -0.005785536952316761, -0.06053311750292778, -0.0652388334274292, -0.009582704864442348, -0.022132469341158867, -0.020763296633958817, ...
FovVideoVDP: a visible difference predictor for wide field-of-view video
https://doi.org/10.1145/3450626.3459831
[ "Rafał K. Mantiuk", "Gyorgy Denes", "Alexandre Chapiro", "Anton Kaplanyan", "Gizem Rufo", "Romain Bachy", "Trisha Lian", "Anjul Patney" ]
FovVideoVDP is a video difference metric that models the spatial, temporal, and peripheral aspects of perception. While many other metrics are available, our work provides the first practical treatment of these three central aspects of vision simultaneously. The complex interplay between spatial and temporal sensitivit...
journal
10.1145/3450626.3459831
null
null
[ 0.040212277323007584, 0.027938419952988625, 0.011675560846924782, 0.008335038088262081, 0.04375334829092026, -0.0013147933641448617, 0.013895696960389614, 0.02178487367928028, -0.036538902670145035, -0.045465391129255295, 0.00030383747071027756, 0.023434653878211975, -0.05306372791528702, ...
HodgeNet: learning spectral geometry on triangle meshes
https://doi.org/10.1145/3450626.3459797
[ "Dmitriy Smirnov", "Justin Solomon" ]
Constrained by the limitations of learning toolkits engineered for other applications, such as those in image processing, many mesh-based learning algorithms employ data flows that would be atypical from the perspective of conventional geometry processing. As an alternative, we present a technique for learning from mes...
journal
10.1145/3450626.3459797
2104.12826
title_snapshot
[ -0.011116559617221355, -0.007404394447803497, 0.01377557311207056, 0.015254219062626362, 0.02400374412536621, 0.033639248460531235, 0.01827678084373474, -0.03507903963327408, -0.038562413305044174, -0.06625394523143768, 0.0004958323552273214, 0.0036863889545202255, -0.06781163811683655, 0....
ShapeMOD: macro operation discovery for 3D shape programs
https://doi.org/10.1145/3450626.3459821
[ "R. Kenny Jones", "David Charatan", "Paul Guerrero", "Niloy J. Mitra", "Daniel Ritchie" ]
A popular way to create detailed yet easily controllable 3D shapes is via procedural modeling, i.e. generating geometry using programs. Such programs consist of a series of instructions along with their associated parameter values. To fully realize the benefits of this representation, a shape program should be compact ...
journal
10.1145/3450626.3459821
2104.06392
title_snapshot
[ 0.01654990203678608, -0.00011620957957347855, -0.021369177848100662, 0.02711091935634613, 0.03845283389091492, 0.029526477679610252, -0.004939205478876829, -0.0073786042630672455, -0.024010300636291504, -0.0552971325814724, -0.024139655753970146, 0.0150550352409482, -0.05943012610077858, -...
AgileGAN: stylizing portraits by inversion-consistent transfer learning
https://doi.org/10.1145/3450626.3459771
[ "Guoxian Song", "Linjie Luo", "Jing Liu", "Wan-Chun Ma", "Chunpong Lai", "Chuanxia Zheng", "Tat-Jen Cham" ]
Portraiture as an art form has evolved from realistic depiction into a plethora of creative styles. While substantial progress has been made in automated stylization, generating high quality stylistic portraits is still a challenge, and even the recent popular Toonify suffers from several artifacts when used on real in...
journal
10.1145/3450626.3459771
null
null
[ 0.010755668394267559, -0.04876946657896042, -0.034776657819747925, 0.0228946041315794, 0.04010225459933281, 0.0008957245154306293, 0.02502446621656418, -0.010774110443890095, -0.009503808803856373, -0.07086366415023804, -0.003761841682717204, -0.007090328261256218, -0.06951884925365448, -0...
StrokeStrip: joint parameterization and fitting of stroke clusters
https://doi.org/10.1145/3450626.3459777
[ "Dave Pagurek Van Mossel", "Chenxi Liu", "Nicholas Vining", "Mikhail Bessmeltsev", "Alla Sheffer" ]
When creating freeform drawings, artists routinely employ clusters of overdrawn strokes to convey intended, aggregate curves. The ability to algorithmically fit these intended curves to their corresponding clusters is central to many applications that use artist drawings as inputs. However, while human observers effort...
journal
10.1145/3450626.3459777
null
null
[ 0.001914371270686388, 0.007111135870218277, 0.014446482993662357, 0.009798215702176094, 0.036462023854255676, 0.049054939299821854, 0.0074115232564508915, 0.004622474778443575, -0.024355489760637283, -0.07600045204162598, -0.023915493860840797, -0.016462016850709915, -0.060976214706897736, ...
An unbiased ray-marching transmittance estimator
https://doi.org/10.1145/3450626.3459937
[ "Markus Kettunen", "Eugene D'Eon", "Jacopo Pantaleoni", "Jan Novák" ]
We present an in-depth analysis of the sources of variance in state-of-the-art unbiased volumetric transmittance estimators, and propose several new methods for improving their efficiency. These combine to produce a single estimator that is universally optimal relative to prior work, with up to several orders of magnit...
journal
10.1145/3450626.3459937
2102.10294
title_snapshot
[ 0.024982379749417305, 0.031030721962451935, 0.03826383128762245, -0.009924483485519886, 0.03970765694975853, 0.03164386376738548, 0.009964090771973133, 0.016858147457242012, -0.025293024256825447, -0.09128746390342712, 0.01532994955778122, 0.02014777436852455, -0.02811107039451599, 0.01419...
DeepFaceEditing: deep face generation and editing with disentangled geometry and appearance control
https://doi.org/10.1145/3450626.3459760
[ "Shu-Yu Chen", "Feng-Lin Liu", "Yu-Kun Lai", "Paul L. Rosin", "Chunpeng Li", "Hongbo Fu", "Lin Gao" ]
Recent facial image synthesis methods have been mainly based on conditional generative models. Sketch-based conditions can effectively describe the geometry of faces, including the contours of facial components, hair structures, as well as salient edges (e.g., wrinkles) on face surfaces but lack effective control of ap...
journal
10.1145/3450626.3459760
2105.08935
title_snapshot
[ 0.012020778842270374, -0.0015914291143417358, -0.022539950907230377, 0.0611095204949379, 0.03743164241313934, 0.025266289710998535, 0.028874963521957397, 0.01698371395468712, -0.0016846697544679046, -0.0921475812792778, -0.037549763917922974, -0.013594805262982845, -0.07735686749219894, 0....
Learning an animatable detailed 3D face model from in-the-wild images
https://doi.org/10.1145/3450626.3459936
[ "Yao Feng", "Haiwen Feng", "Michael J. Black", "Timo Bolkart" ]
While current monocular 3D face reconstruction methods can recover fine geometric details, they suffer several limitations. Some methods produce faces that cannot be realistically animated because they do not model how wrinkles vary with expression. Other methods are trained on high-quality face scans and do not genera...
journal
10.1145/3450626.3459936
2012.04012
title_snapshot
[ 0.009287194348871708, -0.002566756447777152, -0.01979776844382286, 0.012126000598073006, 0.03341534361243248, 0.03741549327969551, 0.05098334327340126, 0.02110649086534977, -0.02064673975110054, -0.050211988389492035, -0.025197627022862434, -0.008937438018620014, -0.03418801724910736, 0.02...
Volumetric appearance stylization with stylizing kernel prediction network
https://doi.org/10.1145/3450626.3459799
[ "Jie Guo", "Mengtian Li", "Zijing Zong", "Yuntao Liu", "Jingwu He", "Yanwen Guo", "Ling-Qi Yan" ]
This paper aims to efficiently construct the volume of heterogeneous single-scattering albedo for a given medium that would lead to desired color appearance. We achieve this goal by formulating it as a volumetric style transfer problem in which an input 3D density volume is stylized using color features extracted from ...
journal
10.1145/3450626.3459799
null
null
[ 0.03193436563014984, -0.0226365327835083, 0.03306727111339569, 0.03723210468888283, 0.016879446804523468, 0.039857909083366394, 0.00022353655367624015, -0.006349796429276466, -0.02455848455429077, -0.06598132103681564, -0.026060041040182114, -0.00959935411810875, -0.04254356026649475, 0.03...
Knitting 4D garments with elasticity controlled for body motion
https://doi.org/10.1145/3450626.3459868
[ "Zishun Liu", "Xingjian Han", "Yuchen Zhang", "Xiangjia Chen", "Yu-Kun Lai", "Eugeni L. Doubrovski", "Emily Whiting", "Charlie C. L. Wang" ]
In this paper, we present a new computational pipeline for designing and fabricating 4D garments as knitwear that considers comfort during body movement. This is achieved by careful control of elasticity distribution to reduce uncomfortable pressure and unwanted sliding caused by body motion. We exploit the ability to ...
journal
10.1145/3450626.3459868
null
null
[ -0.002362933475524187, -0.007059195078909397, -0.031558483839035034, -0.017832158133387566, 0.058177605271339417, 0.05237441882491112, 0.053759489208459854, -0.0024787173606455326, -0.044496290385723114, -0.061902932822704315, -0.025041984394192696, -0.06883324682712555, -0.04233862459659576...
TransPose: real-time 3D human translation and pose estimation with six inertial sensors
https://doi.org/10.1145/3450626.3459786
[ "Xinyu Yi", "Yuxiao Zhou", "Feng Xu" ]
Motion capture is facing some new possibilities brought by the inertial sensing technologies which do not suffer from occlusion or wide-range recordings as vision-based solutions do. However, as the recorded signals are sparse and quite noisy, online performance and global translation estimation turn out to be two key ...
journal
10.1145/3450626.3459786
2105.04605
title_snapshot
[ 0.018777253106236458, -0.04148773103952408, -0.010885299183428288, 0.008789089508354664, 0.03886936977505684, 0.04306269437074661, 0.03642651438713074, 0.02456105314195156, -0.036331906914711, -0.05788528174161911, 0.0032746109645813704, -0.07354845106601715, -0.06857880204916, -0.05154219...
Dynamic closest color warping to sort and compare palettes
https://doi.org/10.1145/3450626.3459776
[ "Suzi kim", "Sunghee Choi" ]
A color palette is one of the simplest and most intuitive descriptors that can be extracted from images or videos. This paper proposes a method to assess the similarity between color palettes by sorting colors. While previous palette similarity measures compare only colors without considering the overall palette combin...
journal
10.1145/3450626.3459776
null
null
[ -0.004748459905385971, -0.03334886580705643, -0.014938975684344769, 0.05084826797246933, 0.02319994382560253, 0.05324633792042732, -0.008480174466967583, 0.030373940244317055, -0.06108841300010681, -0.08375408500432968, -0.03894878551363945, -0.01833925023674965, -0.05891265347599983, 0.04...
Fast linking numbers for topology verification of loopy structures
https://doi.org/10.1145/3450626.3459778
[ "Ante Qu", "Doug L. James" ]
It is increasingly common to model, simulate, and process complex materials based on loopy structures, such as in yarn-level cloth garments, which possess topological constraints between inter-looping curves. While the input model may satisfy specific topological linkages between pairs of closed loops, subsequent proce...
journal
10.1145/3450626.3459778
2106.12655
title_snapshot
[ 0.004052110482007265, 0.01004820130765438, -0.012514937669038773, 0.011187228374183178, 0.03686169534921646, 0.049900997430086136, -0.004526160191744566, -0.0038038110360503197, -0.029475586488842964, -0.05781129002571106, -0.02247876301407814, -0.035707227885723114, -0.05977543443441391, ...
Only a matter of style: age transformation using a style-based regression model
https://doi.org/10.1145/3450626.3459805
[ "Yuval Alaluf", "Or Patashnik", "Daniel Cohen-Or" ]
The task of age transformation illustrates the change of an individual's appearance over time. Accurately modeling this complex transformation over an input facial image is extremely challenging as it requires making convincing, possibly large changes to facial features and head shape, while still preserving the input ...
journal
10.1145/3450626.3459805
2102.02754
title_snapshot
[ -0.004538984969258308, -0.02740965224802494, -0.008128995075821877, 0.019846180453896523, 0.05292966961860657, 0.02879735827445984, 0.01926392689347267, 0.011517833918333054, -0.0001255958923138678, -0.06606482714414597, -0.019814519211649895, 0.022904852405190468, -0.050110720098018646, 0...
Designing an encoder for StyleGAN image manipulation
https://doi.org/10.1145/3450626.3459838
[ "Omer Tov", "Yuval Alaluf", "Yotam Nitzan", "Or Patashnik", "Daniel Cohen-Or" ]
Recently, there has been a surge of diverse methods for performing image editing by employing pre-trained unconditional generators. Applying these methods on real images, however, remains a challenge, as it necessarily requires the inversion of the images into their latent space. To successfully invert a real image, on...
journal
10.1145/3450626.3459838
2102.02766
title_snapshot
[ 0.019839845597743988, -0.027203891426324844, -0.021907666698098183, 0.04691614583134651, 0.050993118435144424, 0.017806479707360268, 0.006387906149029732, 0.006387463770806789, -0.004194291774183512, -0.0819440707564354, -0.03478596359491348, -0.0014986986061558127, -0.04645133391022682, -...
Fast diffraction pathfinding for dynamic sound propagation
https://doi.org/10.1145/3450626.3459751
[ "Carl Schissler", "Gregor Mückl", "Paul Calamia" ]
In the context of geometric acoustic simulation, one of the more perceptually important yet difficult to simulate acoustic effects is diffraction, a phenomenon that allows sound to propagate around obstructions and corners. A significant bottleneck in real-time simulation of diffraction is the enumeration of high-order...
journal
10.1145/3450626.3459751
null
null
[ -0.0012012948282063007, 0.02760709449648857, -0.021823732182383537, 0.030239852145314217, 0.03200940042734146, 0.047196920961141586, 0.025138869881629944, 0.01539526879787445, -0.03405227139592171, -0.09337804466485977, 0.007403727155178785, 0.009118257090449333, -0.03188808634877205, 0.02...
Editable free-viewpoint video using a layered neural representation
https://doi.org/10.1145/3450626.3459756
[ "Jiakai Zhang", "Xinhang Liu", "Xinyi Ye", "Fuqiang Zhao", "Yanshun Zhang", "Minye Wu", "Yingliang Zhang", "Lan Xu", "Jingyi Yu" ]
Generating free-viewpoint videos is critical for immersive VR/AR experience, but recent neural advances still lack the editing ability to manipulate the visual perception for large dynamic scenes. To fill this gap, in this paper, we propose the first approach for editable free-viewpoint video generation for large-scale...
journal
10.1145/3450626.3459756
2104.14786
title_snapshot
[ 0.014907538890838623, 0.022720208391547203, 0.006931276060640812, 0.023066746070981026, 0.03693829104304314, 0.03158504143357277, 0.00229700468480587, 0.01090397872030735, -0.039639029651880264, -0.05052679404616356, -0.03986330330371857, -0.013868589885532856, -0.04550726339221001, 0.0161...
The effect of shape and illumination on material perception: model and applications
https://doi.org/10.1145/3450626.3459813
[ "Ana Serrano", "Bin Chen", "Chao Wang", "Michal Piovarči", "Hans-Peter Seidel", "Piotr Didyk", "Karol Myszkowski" ]
Material appearance hinges on material reflectance properties but also surface geometry and illumination. The unlimited number of potential combinations between these factors makes understanding and predicting material appearance a very challenging task. In this work, we collect a large-scale dataset of perceptual rati...
journal
10.1145/3450626.3459813
null
null
[ 0.033081233501434326, 0.029252631589770317, 0.0015795332146808505, 0.039886634796857834, 0.03101513348519802, 0.029691021889448166, 0.015424374490976334, 0.02451680414378643, -0.03659128025174141, -0.07472085952758789, -0.03808820992708206, 0.014405662193894386, -0.05702930688858032, 0.020...
High-order differentiable autoencoder for nonlinear model reduction
https://doi.org/10.1145/3450626.3459754
[ "Siyuan Shen", "Yin Yang", "Tianjia Shao", "He Wang", "Chenfanfu Jiang", "Lei Lan", "Kun Zhou" ]
This paper provides a new avenue for exploiting deep neural networks to improve physics-based simulation. Specifically, we integrate the classic Lagrangian mechanics with a deep autoencoder to accelerate elastic simulation of deformable solids. Due to the inertia effect, the dynamic equilibrium cannot be established wi...
journal
10.1145/3450626.3459754
2102.11026
title_snapshot
[ -0.04175940901041031, -0.020914414897561073, 0.0028336583636701107, 0.04398679360747337, 0.03437630087137222, 0.06399466842412949, 0.010244041681289673, -0.011501218192279339, -0.030864156782627106, -0.0569765605032444, 0.01801113225519657, -0.005919415503740311, -0.034312982112169266, 0.0...
Antithetic sampling for Monte Carlo differentiable rendering
https://doi.org/10.1145/3450626.3459783
[ "Cheng Zhang", "Zhao Dong", "Michael Doggett", "Shuang Zhao" ]
Stochastic sampling of light transport paths is key to Monte Carlo forward rendering, and previous studies have led to mature techniques capable of drawing high-contribution light paths in complex scenes. These sampling techniques have also been applied to differentiable rendering. In this paper, we demonstrate that pa...
journal
10.1145/3450626.3459783
null
null
[ 0.017718523740768433, 0.014080063439905643, 0.030322611331939697, 0.04482443630695343, 0.05224451795220375, 0.002143860561773181, -0.0006614796002395451, -0.010249802842736244, -0.04290713369846344, -0.09098026156425476, 0.0020199138671159744, -0.008959962986409664, -0.04702050983905792, 0...
Unconventional patterns on surfaces
https://doi.org/10.1145/3450626.3459933
[ "Merel Meekes", "Amir Vaxman" ]
We present a unified method to meshing surfaces with unconventional patterns, both periodic and aperiodic. These patterns, which have so far been studied on the plane, are patterns comprising a small number of tiles, that do not necessarily exhibit translational periodicity. Our method generalizes the de Bruijn multigr...
journal
10.1145/3450626.3459933
null
null
[ -0.03092562034726143, 0.006968699395656586, 0.0019689437467604876, -0.016833873465657234, 0.057129811495542526, 0.0073639461770653725, 0.017093300819396973, -0.005585119128227234, -0.049770355224609375, -0.09348715841770172, 0.004961091559380293, -0.04615384340286255, -0.05778072401881218, ...
Coarse-to-fine: facial structure editing of portrait images via latent space classifications
https://doi.org/10.1145/3450626.3459814
[ "Yiqian Wu", "Yong-Liang Yang", "Qinjie Xiao", "Xiaogang Jin" ]
Facial structure editing of portrait images is challenging given the facial variety, the lack of ground-truth, the necessity of jointly adjusting color and shape, and the requirement of no visual artifacts. In this paper, we investigate how to perform chin editing as a case study of editing facial structures. We presen...
journal
10.1145/3450626.3459814
null
null
[ -0.0009913406101986766, -0.011769650503993034, -0.02139883115887642, 0.026700962334871292, 0.06963656097650528, 0.015644164755940437, 0.048003748059272766, -0.00030570311355404556, -0.042250584810972214, -0.049300018697977066, -0.01035226322710514, 0.004707675892859697, -0.06293047219514847,...
Path-space differentiable rendering of participating media
https://doi.org/10.1145/3450626.3459782
[ "Cheng Zhang", "Zihan Yu", "Shuang Zhao" ]
Physics-based differentiable rendering---which focuses on estimating derivatives of radiometric detector responses with respect to arbitrary scene parameters---has a diverse array of applications from solving analysis-by-synthesis problems to training machine-learning pipelines incorporating forward-rendering processes...
journal
10.1145/3450626.3459782
null
null
[ -0.008624156005680561, 0.027439380064606667, 0.015267678536474705, 0.02582937851548195, 0.062474802136421204, -0.011611978523433208, 0.007874044589698315, -0.0026539312675595284, -0.021080393344163895, -0.0674278736114502, -0.0026058624498546124, -0.01569097489118576, -0.04341163486242294, ...
Orienting point clouds with dipole propagation
https://doi.org/10.1145/3450626.3459835
[ "Gal Metzer", "Rana Hanocka", "Denis Zorin", "Raja Giryes", "Daniele Panozzo", "Daniel Cohen-Or" ]
Establishing a consistent normal orientation for point clouds is a notoriously difficult problem in geometry processing, requiring attention to both local and global shape characteristics. The normal direction of a point is a function of the local surface neighborhood; yet, point clouds do not disclose the full underly...
journal
10.1145/3450626.3459835
2105.01604
title_snapshot
[ -0.011736501008272171, 0.010898086242377758, 0.020001135766506195, 0.024177512153983116, 0.00973785761743784, 0.02192853018641472, 0.0016384848859161139, 0.01752568408846855, -0.03612201288342476, -0.054779913276433945, -0.050226110965013504, -0.004795296583324671, -0.06700602173805237, -0...
Learning time-critical responses for interactive character control
https://doi.org/10.1145/3450626.3459826
[ "Kyungho Lee", "Sehee Min", "Sunmin Lee", "Jehee Lee" ]
Creating agile and responsive characters from a collection of unorganized human motion has been an important problem of constructing interactive virtual environments. Recently, learning-based approaches have successfully been exploited to learn deep network policies for the control of interactive characters. The agilit...
journal
10.1145/3450626.3459826
null
null
[ -0.02390902116894722, -0.02877817302942276, -0.009615453891456127, 0.027130018919706345, 0.04363133758306503, 0.02436019480228424, 0.013171372935175896, -0.0015296703204512596, -0.03429887071251869, -0.027132034301757812, -0.029317989945411682, -0.020493384450674057, -0.043266188353300095, ...
3D weaving with curved ribbons
https://doi.org/10.1145/3450626.3459788
[ "Yingying Ren", "Julian Panetta", "Tian Chen", "Florin Isvoranu", "Samuel Poincloux", "Christopher Brandt", "Alison Martin", "Mark Pauly" ]
Basket weaving is a traditional craft for creating curved surfaces as an interwoven array of thin, flexible, and initially straight ribbons. The three-dimensional shape of a woven structure emerges through a complex interplay of the elastic bending behavior of the ribbons and the contact forces at their crossings. Curv...
journal
10.1145/3450626.3459788
null
null
[ 0.02062656544148922, 0.002280107932165265, -0.004722289275377989, 0.00616456987336278, 0.04884117469191551, 0.045400865375995636, 0.01911878027021885, 0.005722742062062025, -0.04159558564424515, -0.07513349503278732, -0.025828523561358452, -0.04405568540096283, -0.029262620955705643, 0.047...
Bijective and coarse high-order tetrahedral meshes
https://doi.org/10.1145/3450626.3459840
[ "Zhongshi Jiang", "Ziyi Zhang", "Yixin Hu", "Teseo Schneider", "Denis Zorin", "Daniele Panozzo" ]
We introduce a robust and automatic algorithm to convert linear triangle meshes with feature annotated into coarse tetrahedral meshes with curved elements. Our construction guarantees that the high-order meshes are free of element inversion or self-intersection. A user-specified maximal geometrical error from the input...
journal
10.1145/3450626.3459840
null
null
[ -0.02540973760187626, 0.024334408342838287, 0.023895906284451485, 0.007340440526604652, 0.030144108459353447, 0.05847097560763359, -0.003076852997764945, 0.0038766199722886086, -0.02507880888879299, -0.07988785207271576, -0.019352983683347702, -0.020086610689759254, -0.05292462557554245, 0...
Foldover-free maps in 50 lines of code
https://doi.org/10.1145/3450626.3459847
[ "Vladimir Garanzha", "Igor Kaporin", "Liudmila Kudryavtseva", "François Protais", "Nicolas Ray", "Dmitry Sokolov" ]
Mapping a triangulated surface to 2D space (or a tetrahedral mesh to 3D space) is an important problem in geometry processing. In computational physics, untangling plays an important role in mesh generation: it takes a mesh as an input, and moves the vertices to get rid of foldovers. In fact, mesh untangling can be con...
journal
10.1145/3450626.3459847
2102.03069
title_snapshot
[ -0.012010106816887856, 0.007741574663668871, -0.023154042661190033, 0.022904369980096817, 0.03247321397066116, 0.036182887852191925, 0.006991388276219368, 0.02153193950653076, 0.0009749922319315374, -0.09034145623445511, -0.031571418046951294, -0.03961379826068878, -0.08954453468322754, 0....
A unified second-order accurate in time MPM formulation for simulating viscoelastic liquids with phase change
https://doi.org/10.1145/3450626.3459820
[ "Haozhe Su", "Tao Xue", "Chengguizi Han", "Chenfanfu Jiang", "Mridul Aanjaneya" ]
We assume that the viscous forces in any liquid are simultaneously local and non-local , and introduce the extended POM-POM model [McLeish and Larson 1998; Oishi et al. 2012; Verbeeten et al. 2001] to computer graphics to design a unified constitutive model for viscosity that generalizes prior models, such as Oldroyd-B...
journal
10.1145/3450626.3459820
null
null
[ -0.046414051204919815, -0.04675133526325226, 0.020603395998477936, 0.03138534352183342, 0.039630234241485596, 0.04094596579670906, 0.0034647618886083364, 0.021732253953814507, -0.06351601332426071, -0.06655782461166382, 0.002018433064222336, -0.008885438553988934, -0.033882271498441696, 0....
Consistent depth of moving objects in video
https://doi.org/10.1145/3450626.3459871
[ "Zhoutong Zhang", "Forrester Cole", "Richard Tucker", "William T. Freeman", "Tali Dekel" ]
We present a method to estimate depth of a dynamic scene, containing arbitrary moving objects, from an ordinary video captured with a moving camera. We seek a geometrically and temporally consistent solution to this under-constrained problem: the depth predictions of corresponding points across frames should induce pla...
journal
10.1145/3450626.3459871
2108.01166
title_snapshot
[ 0.032754410058259964, -0.013334819115698338, 0.002116727875545621, 0.049550823867321014, 0.03394986689090729, 0.040955156087875366, 0.04242419824004173, 0.023840997368097305, -0.03717232123017311, -0.05375274270772934, -0.019130591303110123, -0.025647545233368874, -0.049284372478723526, 0....
Learning meaningful controls for fluids
https://doi.org/10.1145/3450626.3459845
[ "Mengyu Chu", "Nils Thuerey", "Hans-Peter Seidel", "Christian Theobalt", "Rhaleb Zayer" ]
While modern fluid simulation methods achieve high-quality simulation results, it is still a big challenge to interpret and control motion from visual quantities, such as the advected marker density. These visual quantities play an important role in user interactions: Being familiar and meaningful to humans, these quan...
journal
10.1145/3450626.3459845
null
null
[ -0.037505004554986954, 0.001542200450785458, 0.008478891104459763, 0.047923676669597626, 0.018807439133524895, 0.021225592121481895, 0.008410096168518066, -0.0033315175678581, -0.0438808798789978, -0.05251661315560341, -0.029109260067343712, -0.033156801015138626, -0.050490908324718475, 0....
PH-CPF: planar hexagonal meshing using coordinate power fields
https://doi.org/10.1145/3450626.3459770
[ "Kacper Pluta", "Michal Edelstein", "Amir Vaxman", "Mirela Ben-Chen" ]
We present a new approach for computing planar hexagonal meshes that approximate a given surface, represented as a triangle mesh. Our method is based on two novel technical contributions. First, we introduce Coordinate Power Fields , which are a pair of tangent vector fields on the surface that fulfill a certain contin...
journal
10.1145/3450626.3459770
2105.02507
title_snapshot
[ -0.006576938088983297, 0.024285655468702316, 0.0020141347777098417, 0.03209761157631874, 0.037264320999383926, 0.048688504844903946, -0.04070891812443733, 0.002565215341746807, -0.025808466598391533, -0.08790899813175201, 0.021527597680687904, -0.04741997271776199, -0.06075664609670639, -0...
A momentum-conserving implicit material point method for surface tension with contact angles and spatial gradients
https://doi.org/10.1145/3450626.3459874
[ "Jingyu Chen", "Victoria Kala", "Alan Marquez-Razon", "Elias Gueidon", "David A. B. Hyde", "Joseph Teran" ]
We present a novel Material Point Method (MPM) discretization of surface tension forces that arise from spatially varying surface energies. These variations typically arise from surface energy dependence on temperature and/or concentration. Furthermore, since the surface energy is an interfacial property depending on t...
journal
10.1145/3450626.3459874
2101.12408
title_judge
[ -0.015767479315400124, 0.010537620633840561, 0.027758533135056496, 0.02564423345029354, 0.0375731997191906, 0.019778942689299583, 0.022619348019361496, -0.014211955480277538, -0.025872990489006042, -0.06965190917253494, 0.024160360917448997, -0.0145212197676301, -0.04890139028429985, 0.033...
Systematically differentiating parametric discontinuities
https://doi.org/10.1145/3450626.3459775
[ "Sai Praveen Bangaru", "Jesse Michel", "Kevin Mu", "Gilbert Bernstein", "Tzu-Mao Li", "Jonathan Ragan-Kelley" ]
Emerging research in computer graphics, inverse problems, and machine learning requires us to differentiate and optimize parametric discontinuities. These discontinuities appear in object boundaries, occlusion, contact, and sudden change over time. In many domains, such as rendering and physics simulation, we different...
journal
10.1145/3450626.3459775
null
null
[ -0.017446856945753098, 0.02497922256588936, 0.0006026155315339565, 0.045001380145549774, 0.03135836124420166, 0.03829990699887276, 0.012326499447226524, -0.013215798884630203, -0.02356116846203804, -0.054375533014535904, -0.033942896872758865, -0.01880360022187233, -0.04330414533615112, 0....
Mechanics-aware deformation of yarn pattern geometry
https://doi.org/10.1145/3450626.3459816
[ "Georg Sperl", "Rahul Narain", "Chris Wojtan" ]
Triangle mesh-based simulations are able to produce satisfying animations of knitted and woven cloth; however, they lack the rich geometric detail of yarn-level simulations. Naive texturing approaches do not consider yarn-level physics, while full yarn-level simulations may become prohibitively expensive for large garm...
journal
10.1145/3450626.3459816
null
null
[ -0.004344329237937927, -0.02308543585240841, 0.0024965438060462475, -0.009277839213609695, 0.060627181082963943, 0.05558851733803749, 0.018333643674850464, 0.0249168761074543, -0.045227888971567154, -0.07137396186590195, -0.04227914661169052, -0.04808740317821503, -0.02345409244298935, 0.0...
Intersection-free rigid body dynamics
https://doi.org/10.1145/3450626.3459802
[ "Zachary Ferguson", "Minchen Li", "Teseo Schneider", "Francisca Gil-Ureta", "Timothy Langlois", "Chenfanfu Jiang", "Denis Zorin", "Danny M. Kaufman", "Daniele Panozzo" ]
We introduce the first implicit time-stepping algorithm for rigid body dynamics, with contact and friction, that guarantees intersection-free configurations at every time step. Our algorithm explicitly models the curved trajectories traced by rigid bodies in both collision detection and response. For collision detectio...
journal
10.1145/3450626.3459802
null
null
[ -0.030356232076883316, 0.00966306496411562, 0.0199733879417181, 0.027941051870584488, 0.027639416977763176, 0.029105493798851967, -0.00037525821244344115, 0.028214208781719208, -0.048599567264318466, -0.06293068081140518, -0.02042638137936592, -0.02067207545042038, -0.0756552666425705, 0.0...
A gradient-based framework for 3D print appearance optimization
https://doi.org/10.1145/3450626.3459844
[ "Thomas Klaus Nindel", "Tomáš Iser", "Tobias Rittig", "Alexander Wilkie", "Jaroslav Křivánek" ]
In full-color inkjet 3D printing, a key problem is determining the material configuration for the millions of voxels that a printed object is made of. The goal is a configuration that minimises the difference between desired target appearance and the result of the printing process. So far, the techniques used to find s...
journal
10.1145/3450626.3459844
null
null
[ 0.012965335510671139, 0.013166364282369614, 0.009244894608855247, 0.04104962572455406, 0.049970101565122604, 0.08211029320955276, -0.012145660817623138, -0.007408511824905872, -0.04182527959346771, -0.05980280041694641, -0.040288716554641724, -0.020428553223609924, -0.058744095265865326, 0...
KnitKit: a flexible system for machine knitting of customizable textiles
https://doi.org/10.1145/3450626.3459790
[ "Georges Nader", "Yu Han Quek", "Pei Zhi Chia", "Oliver Weeger", "Sai-Kit Yeung" ]
In this work, we introduce KnitKit , a flexible and customizable system for the computational design and production of functional, multi-material, and three-dimensional knitted textiles. Our system greatly simplifies the knitting of 3D objects with complex, varying patterns that use multiple yarns and stitch patterns b...
journal
10.1145/3450626.3459790
null
null
[ 0.012909314595162868, -0.04912994056940079, -0.020069511607289314, 0.008719250559806824, 0.0539371594786644, 0.029664047062397003, 0.021338600665330887, -0.0025103071238845587, -0.01953042298555374, -0.05437517166137695, -0.045916538685560226, -0.028882205486297607, -0.04887346923351288, 0...
Knit sketching: from cut & sew patterns to machine-knit garments
https://doi.org/10.1145/3450626.3459752
[ "Alexandre Kaspar", "Kui Wu", "Yiyue Luo", "Liane Makatura", "Wojciech Matusik" ]
We present a novel workflow to design and program knitted garments for industrial whole-garment knitting machines. Inspired by traditional garment making based on cutting and sewing, we propose a sketch representation with additional annotations necessary to model the knitting process. Our system bypasses complex editi...
journal
10.1145/3450626.3459752
null
null
[ -0.0009027245687320828, -0.038604822009801865, -0.020956987515091896, 0.012067156843841076, 0.06012935936450958, 0.030404772609472275, 0.0453147366642952, 0.00556562514975667, -0.02390582114458084, -0.07738347351551056, -0.06147701293230057, -0.03639482334256172, -0.06028859689831734, 0.00...
Low-cost SPAD sensing for non-line-of-sight tracking, material classification and depth imaging
https://doi.org/10.1145/3450626.3459824
[ "Clara Callenberg", "Zheng Shi", "Felix Heide", "Matthias B. Hullin" ]
Time-correlated imaging is an emerging sensing modality that has been shown to enable promising application scenarios, including lidar ranging, fluorescence lifetime imaging, and even non-line-of-sight sensing. A leading technology for obtaining time-correlated light measurements are single-photon avalanche diodes (SPA...
journal
10.1145/3450626.3459824
null
null
[ 0.00527207599952817, 0.02936949022114277, -0.023681744933128357, 0.029283929616212845, 0.055099476128816605, 0.011231514625251293, 0.009831450879573822, 0.02784356288611889, -0.02526751533150673, -0.05270375683903694, 0.03330877795815468, -0.029816335067152977, -0.003979720175266266, -0.00...
Authoring consistent landscapes with flora and fauna
https://doi.org/10.1145/3450626.3459952
[ "Pierre Ecormier-Nocca", "Guillaume Cordonnier", "Philippe Carrez", "Anne-Marie Moigne", "Pooran Memari", "Bedrich Benes", "Marie-Paule Cani" ]
We present a novel method for authoring landscapes with flora and fauna while considering their mutual interactions. Our algorithm outputs a steady-state ecosystem in the form of density maps for each species, their daily circuits, and a modified terrain with eroded trails from a terrain, climatic conditions, and speci...
journal
10.1145/3450626.3459952
null
null
[ 0.012408925220370293, -0.0026648924686014652, -0.03937974199652672, 0.030423611402511597, 0.0685822069644928, -0.0030278097838163376, 0.04119087755680084, 0.04387013614177704, -0.01642823964357376, -0.0682968869805336, -0.003893478773534298, -0.012009168043732643, -0.05727088451385498, -0....
Learning active quasistatic physics-based models from data
https://doi.org/10.1145/3450626.3459883
[ "Sangeetha Grama Srinivasan", "Qisi Wang", "Junior Rojas", "Gergely Klár", "Ladislav Kavan", "Eftychios Sifakis" ]
Humans and animals can control their bodies to generate a wide range of motions via low-dimensional action signals representing high-level goals. As such, human bodies and faces are prime examples of active objects, which can affect their shape via an internal actuation mechanism. This paper explores the following prop...
journal
10.1145/3450626.3459883
null
null
[ 0.0004334827826824039, -0.0026899883523583412, -0.02721969597041607, 0.004404124803841114, 0.03930741176009178, 0.013958051800727844, -0.00365237845107913, -0.007021041586995125, -0.04349492862820625, -0.03361654281616211, -0.025742994621396065, -0.029712937772274017, -0.06676035374403, -0...
Geometry and tool motion planning for curvature adapted CNC machining
https://doi.org/10.1145/3450626.3459837
[ "Michael Bartoň", "Michal Bizzarri", "Florian Rist", "Oleksii Sliusarenko", "Helmut Pottmann" ]
CNC machining is the leading subtractive manufacturing technology. Although it is in use since decades, it is far from fully solved and still a rich source for challenging problems in geometric computing. We demonstrate this at hand of 5-axis machining of freeform surfaces, where the degrees of freedom in selecting and...
journal
10.1145/3450626.3459837
null
null
[ -0.0277396347373724, 0.010245139710605145, 0.0062354551628232, -0.002686543855816126, 0.05790015310049057, 0.06660779565572739, 0.003028939478099346, 0.021780822426080704, -0.030571693554520607, -0.07603422552347183, -0.049273788928985596, -0.004756445996463299, -0.015399298630654812, 0.04...
Computational design of weingarten surfaces
https://doi.org/10.1145/3450626.3459939
[ "Davide Pellis", "Martin Kilian", "Helmut Pottmann", "Mark Pauly" ]
In this paper we study Weingarten surfaces and explore their potential for fabrication-aware design in freeform architecture. Weingarten surfaces are characterized by a functional relation between their principal curvatures that implicitly defines approximate local congruences on the surface. These symmetries can be ex...
journal
10.1145/3450626.3459939
null
null
[ 0.010908314026892185, 0.035471297800540924, 0.023622769862413406, 0.0157464649528265, 0.061214346438646317, 0.0455193966627121, 0.003786165500059724, 0.0018697025952860713, -0.024337075650691986, -0.08122421056032181, -0.04041663557291031, -0.029747897759079933, -0.011966696940362453, 0.02...
A perceptual model for eccentricity-dependent spatio-temporal flicker fusion and its applications to foveated graphics
https://doi.org/10.1145/3450626.3459784
[ "Brooke Krajancich", "Petr Kellnhofer", "Gordon Wetzstein" ]
Virtual and augmented reality (VR/AR) displays strive to provide a resolution, framerate and field of view that matches the perceptual capabilities of the human visual system, all while constrained by limited compute budgets and transmission bandwidths of wearable computing systems. Foveated graphics techniques have em...
journal
10.1145/3450626.3459784
2104.13514
title_snapshot
[ 0.029089437797665596, 0.04303441569209099, 0.021671568974852562, 0.010185726918280125, 0.028491366654634476, 0.010820995084941387, 0.016727188602089882, 0.059341318905353546, -0.03388131782412529, -0.06520151346921921, -0.018381556496024132, 0.0077874124981462955, -0.06039933115243912, 0.0...
Free-form scanning of non-planar appearance with neural trace photography
https://doi.org/10.1145/3450626.3459679
[ "Xiaohe Ma", "Kaizhang Kang", "Ruisheng Zhu", "Hongzhi Wu", "Kun Zhou" ]
We propose neural trace photography, a novel framework to automatically learn high-quality scanning of non-planar, complex anisotropic appearance. Our key insight is that free-form appearance scanning can be cast as a geometry learning problem on unstructured point clouds, each of which represents an image measurement ...
journal
10.1145/3450626.3459679
null
null
[ 0.0064965495839715, -0.005847110878676176, 0.005976981949061155, 0.00679908599704504, 0.04966672882437706, 0.027028078213334084, 0.008123248815536499, -0.00868804007768631, -0.04216843098402023, -0.06452614814043045, -0.015185113996267319, -0.02390020340681076, -0.04131576046347618, -0.013...
Fast quasi-harmonic weights for geometric data interpolation
https://doi.org/10.1145/3450626.3459801
[ "Yu Wang", "Justin Solomon" ]
We propose quasi-harmonic weights for interpolating geometric data, which are orders of magnitude faster to compute than state-of-the-art. Currently, interpolation (or, skinning) weights are obtained by solving large-scale constrained optimization problems with explicit constraints to suppress oscillative patterns, yie...
journal
10.1145/3450626.3459801
null
null
[ -0.02239711582660675, -0.035152118653059006, 0.023371541872620583, 0.024058304727077484, 0.004862545058131218, 0.056951768696308136, -0.01398082822561264, -0.00013149139704182744, -0.029074985533952713, -0.0995483249425888, -0.016750849783420563, -0.04056774824857712, -0.07253284752368927, ...
Highlight-aware two-stream network for single-image SVBRDF acquisition
https://doi.org/10.1145/3450626.3459854
[ "Jie Guo", "Shuichang Lai", "Chengzhi Tao", "Yuelong Cai", "Lei Wang", "Yanwen Guo", "Ling-Qi Yan" ]
This paper addresses the task of estimating spatially-varying reflectance (i.e., SVBRDF) from a single, casually captured image. Central to our method is a highlight-aware (HA) convolution operation and a two-stream neural network equipped with proper training losses. Our HA convolution, as a novel variant of standard ...
journal
10.1145/3450626.3459854
null
null
[ 0.031136203557252884, -0.030881622806191444, 0.022981218993663788, 0.008364466018974781, 0.013929582200944424, 0.004027049522846937, 0.0069816214963793755, -0.008321505039930344, -0.04889538139104843, -0.0647740513086319, -0.029936499893665314, 0.006756170652806759, -0.02470327354967594, -...
Boundary-sampled halfspaces: a new representation for constructive solid modeling
https://doi.org/10.1145/3450626.3459870
[ "Xingyi Du", "Qingnan Zhou", "Nathan Carr", "Tao Ju" ]
We present a novel representation of solid models for shape design. Like Constructive Solid Geometry (CSG), the solid shape is constructed from a set of halfspaces without the need for an explicit boundary structure. Instead of using Boolean expressions as in CSG, the shape is defined by sparsely placed samples on the ...
journal
10.1145/3450626.3459870
null
null
[ 0.0004895718302577734, 0.007490647491067648, -0.023595165461301804, -0.001991152996197343, 0.047515831887722015, 0.029919927939772606, -0.008202403783798218, -0.025489844381809235, -0.031972676515579224, -0.07959041744470596, -0.024378325790166855, -0.03509879484772682, -0.06888896971940994,...
Capturing detailed deformations of moving human bodies
https://doi.org/10.1145/3450626.3459792
[ "He Chen", "Hyojoon Park", "Kutay Macit", "Ladislav Kavan" ]
We present a new method to capture detailed human motion, sampling more than 1000 unique points on the body. Our method outputs highly accurate 4D (spatio-temporal) point coordinates and, crucially, automatically assigns a unique label to each of the points. The locations and unique labels of the points are inferred fr...
journal
10.1145/3450626.3459792
2102.07343
title_snapshot
[ 0.013184639625251293, -0.02584017440676689, -0.03705126419663429, -0.0009423262090422213, 0.05096941068768501, 0.05138378590345383, 0.01705808751285076, 0.007870284840464592, -0.05069294571876526, -0.06635364890098572, -0.036370519548654556, -0.07942972332239151, -0.045475807040929794, -0....
Medial IPC: accelerated incremental potential contact with medial elastics
https://doi.org/10.1145/3450626.3459753
[ "Lei Lan", "Yin Yang", "Danny Kaufman", "Junfeng Yao", "Minchen Li", "Chenfanfu Jiang" ]
We propose a framework of efficient nonlinear deformable simulation with both fast continuous collision detection and robust collision resolution. We name this new framework Medial IPC as it integrates the merits from medial elastics, for an efficient and versatile reduced simulation, as well as incremental potential c...
journal
10.1145/3450626.3459753
null
null
[ -0.03742429241538048, -0.004330118652433157, -0.0027021828573197126, 0.014575236476957798, 0.018015723675489426, 0.06186418980360031, 0.008891127072274685, 0.02417089231312275, -0.043762389570474625, -0.08983587473630905, -0.006144068203866482, -0.045991767197847366, -0.03510580584406853, ...
MoCap-solver: a neural solver for optical motion capture data
https://doi.org/10.1145/3450626.3459681
[ "Kang Chen", "Yupan Wang", "Song-Hai Zhang", "Sen-Zhe Xu", "Weidong Zhang", "Shi-Min Hu" ]
In a conventional optical motion capture (MoCap) workflow, two processes are needed to turn captured raw marker sequences into correct skeletal animation sequences. Firstly, various tracking errors present in the markers must be fixed ( cleaning or refining ). Secondly, an agent skeletal mesh must be prepared for the a...
journal
10.1145/3450626.3459681
null
null
[ 0.000477582128951326, -0.005928716156631708, -0.013136769644916058, 0.025740057229995728, 0.04136978089809418, 0.03833990916609764, -0.0028656430076807737, -0.012312369421124458, -0.050757937133312225, -0.03930224850773811, -0.027465686202049255, -0.02967992052435875, -0.06335178017616272, ...
BRDF importance sampling for polygonal lights
https://doi.org/10.1145/3450626.3459672
[ "Christoph Peters" ]
With the advent of real-time ray tracing, there is an increasing interest in GPU-friendly importance sampling techniques. We present such methods to sample convex polygonal lights approximately proportional to diffuse and specular BRDFs times the cosine term. For diffuse surfaces, we sample the polygons proportional to...
journal
10.1145/3450626.3459672
null
null
[ -0.008793676272034645, -0.0035221788566559553, 0.04649347811937332, 0.04096052050590515, 0.014173303730785847, 0.035921379923820496, -0.0023053137119859457, 0.012133507058024406, -0.03333422541618347, -0.09078673273324966, -0.0355243980884552, -0.009493039920926094, -0.05027193948626518, 0...
TryOnGAN: body-aware try-on via layered interpolation
https://doi.org/10.1145/3450626.3459884
[ "Kathleen M Lewis", "Srivatsan Varadharajan", "Ira Kemelmacher-Shlizerman" ]
Given a pair of images---target person and garment on another person---we automatically generate the target person in the given garment. Previous methods mostly focused on texture transfer via paired data training, while overlooking body shape deformations, skin color, and seamless blending of garment with the person. ...
journal
10.1145/3450626.3459884
2101.02285
title_snapshot
[ 0.03195902332663536, -0.05634728819131851, -0.03654700145125389, 0.0004938177298754454, 0.047967586666345596, 0.02029760368168354, 0.022912824526429176, -0.008495260961353779, -0.0070088524371385574, -0.0653412938117981, -0.0578204020857811, -0.03631185367703438, -0.05287675932049751, -0.0...
Neural scene graph rendering
https://doi.org/10.1145/3450626.3459848
[ "Jonathan Granskog", "Till N. Schnabel", "Fabrice Rousselle", "Jan Novák" ]
We present a neural scene graph---a modular and controllable representation of scenes with elements that are learned from data. We focus on the forward rendering problem, where the scene graph is provided by the user and references learned elements. The elements correspond to geometry and material definitions of scene ...
journal
10.1145/3450626.3459848
null
null
[ -0.008370386436581612, 0.0031629488803446293, 0.020524287596344948, 0.03932499885559082, 0.019025886431336403, 0.028171513229608536, -0.006565490271896124, 0.02730412781238556, -0.049195144325494766, -0.06719314306974411, -0.035320598632097244, -0.030533140525221825, -0.0596369244158268, 0...
Computing minimal surfaces with differential forms
https://doi.org/10.1145/3450626.3459781
[ "Stephanie Wang", "Albert Chern" ]
We describe a new algorithm that solves a classical geometric problem: Find a surface of minimal area bordered by an arbitrarily prescribed boundary curve. Existing numerical methods face challenges due to the non-convexity of the problem. Using a representation of curves and surfaces via differential forms on the ambi...
journal
10.1145/3450626.3459781
null
null
[ -0.04664520546793938, 0.01503649353981018, 0.03255174681544304, 0.010035702027380466, 0.02983112633228302, 0.054376229643821716, -0.0009420837159268558, -0.013967689126729965, -0.02622837945818901, -0.08086346089839935, -0.027258116751909256, -0.006598899606615305, -0.03335580974817276, 0....
A non-exponential transmittance model for volumetric scene representations
https://doi.org/10.1145/3450626.3459815
[ "Delio Vicini", "Wenzel Jakob", "Anton Kaplanyan" ]
We introduce a novel transmittance model to improve the volumetric representation of 3D scenes. The model can represent opaque surfaces in the volumetric light transport framework. Volumetric representations are useful for complex scenes, and become increasingly popular for level of detail and scene reconstruction. The...
journal
10.1145/3450626.3459815
null
null
[ 0.02224917896091938, 0.018798889592289925, 0.018562354147434235, 0.014423990622162819, 0.03458237275481224, 0.015261207707226276, -0.0020203746389597654, 0.009774881415069103, -0.03570224344730377, -0.07322631031274796, -0.01810641400516033, -0.009943348355591297, -0.03613252937793732, 0.0...
Control strategies for physically simulated characters performing two-player competitive sports
https://doi.org/10.1145/3450626.3459761
[ "Jungdam Won", "Deepak Gopinath", "Jessica Hodgins" ]
In two-player competitive sports, such as boxing and fencing , athletes often demonstrate efficient and tactical movements during a competition. In this paper, we develop a learning framework that generates control policies for physically simulated athletes who have many degrees-of-freedom. Our framework uses a two ste...
journal
10.1145/3450626.3459761
null
null
[ -0.0395178496837616, -0.004816005937755108, -0.040091387927532196, 0.0030856190714985132, 0.044465310871601105, 0.004264157265424728, 0.033990293741226196, -0.006461029406636953, -0.02131182886660099, -0.04882306605577469, -0.008820796385407448, -0.004004563670605421, -0.06501205265522003, ...
SANM: a symbolic asymptotic numerical solver with applications in mesh deformation
https://doi.org/10.1145/3450626.3459755
[ "Kai Jia" ]
Solving nonlinear systems is an important problem. Numerical continuation methods efficiently solve certain nonlinear systems. The Asymptotic Numerical Method (ANM) is a powerful continuation method that usually converges faster than Newtonian methods. ANM explores the landscape of the function by following a parameter...
journal
10.1145/3450626.3459755
2105.08535
title_snapshot
[ -0.05879451707005501, -0.02812808007001877, 0.0005195480189286172, 0.010807644575834274, 0.033242519944906235, 0.07460107654333115, 0.020017210394144058, -0.03545038402080536, -0.052684929221868515, -0.07542424649000168, 0.004235577769577503, -0.00032013337477110326, -0.03918806090950966, ...