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SA '11: Proceedings of the 2011 SIGGRAPH Asia Conference

Section: Shape analysis and deformation

Pattern-aware shape deformation using sliding dockers
Martin Bokeloh, Michael Wand, Vladlen Koltun, Hans-Peter Seidel
Article No.: 123
DOI: 10.1145/2070781.2024157

This paper introduces a new structure-aware shape deformation technique. The key idea is to detect continuous and discrete regular patterns and ensure that these patterns are preserved during free-form deformation. We propose a variational...

Shape space exploration of constrained meshes
Yong-Liang Yang, Yi-Jun Yang, Helmut Pottmann, Niloy J. Mitra
Article No.: 124
DOI: 10.1145/2070781.2024158

We present a general computational framework to locally characterize any shape space of meshes implicitly prescribed by a collection of non-linear constraints. We computationally access such manifolds, typically of high dimension and co-dimension,...

Joint shape segmentation with linear programming
Qixing Huang, Vladlen Koltun, Leonidas Guibas
Article No.: 125
DOI: 10.1145/2070781.2024159

We present an approach to segmenting shapes in a heterogenous shape database. Our approach segments the shapes jointly, utilizing features from multiple shapes to improve the segmentation of each. The approach is entirely unsupervised and is based...

Unsupervised co-segmentation of a set of shapes via descriptor-space spectral clustering
Oana Sidi, Oliver van Kaick, Yanir Kleiman, Hao Zhang, Daniel Cohen-Or
Article No.: 126
DOI: 10.1145/2070781.2024160

We introduce an algorithm for unsupervised co-segmentation of a set of shapes so as to reveal the semantic shape parts and establish their correspondence across the set. The input set may exhibit significant shape variability where the shapes do...

Section: Shape analysis and deformation

Modeling and generating moving trees from video
Chuan Li, Oliver Deussen, Yi-Zhe Song, Phil Willis, Peter Hall
Article No.: 127
DOI: 10.1145/2070781.2024161

We present a probabilistic approach for the automatic production of tree models with convincing 3D appearance and motion. The only input is a video of a moving tree that provides us an initial dynamic tree model, which is used to generate new...

Candid portrait selection from video
Juliet Fiss, Aseem Agarwala, Brian Curless
Article No.: 128
DOI: 10.1145/2070781.2024162

In this paper, we train a computer to select still frames from video that work well as candid portraits. Because of the subjective nature of this task, we conduct a human subjects study to collect ratings of video frames across multiple videos....

Multiview face capture using polarized spherical gradient illumination
Abhijeet Ghosh, Graham Fyffe, Borom Tunwattanapong, Jay Busch, Xueming Yu, Paul Debevec
Article No.: 129
DOI: 10.1145/2070781.2024163

We present a novel process for acquiring detailed facial geometry with high resolution diffuse and specular photometric information from multiple viewpoints using polarized spherical gradient illumination. Key to our method is a new pair of...

Video face replacement
Kevin Dale, Kalyan Sunkavalli, Micah K. Johnson, Daniel Vlasic, Wojciech Matusik, Hanspeter Pfister
Article No.: 130
DOI: 10.1145/2070781.2024164

We present a method for replacing facial performances in video. Our approach accounts for differences in identity, visual appearance, speech, and timing between source and target videos. Unlike prior work, it does not require substantial manual...

Section: Shape analysis and deformation

A rendering framework for multiscale views of 3D models
Wei-Hsien Hsu, Kwan-Liu Ma, Carlos Correa
Article No.: 131
DOI: 10.1145/2070781.2024165

Images that seamlessly combine views at different levels of detail are appealing. However, creating such multiscale images is not a trivial task, and most such illustrations are handcrafted by skilled artists. This paper presents a framework for...

Mixed-order compositing for 3D paintings
Ilya Baran, Johannes Schmid, Thomas Siegrist, Markus Gross, Robert W. Sumner
Article No.: 132
DOI: 10.1145/2070781.2024166

We present a method for rendering 3D paintings by compositing brush strokes embedded in space. The challenge in compositing 3D brush strokes is reconciling conflicts between their z-order in 3D and the order in which the strokes were...

Animated construction of line drawings
Hongbo Fu, Shizhe Zhou, Ligang Liu, Niloy J. Mitra
Article No.: 133
DOI: 10.1145/2070781.2024167

Revealing the sketching sequence of a line drawing can be visually intriguing and used for video-based storytelling. Typically this is enabled based on tedious recording of artists' drawing process. We demonstrate that it is often possible to...

Sketch-based Dynamic Illustration of Fluid Systems
Bo Zhu, Michiaki Iwata, Ryo Haraguchi, Takashi Ashihara, Nobuyuki Umetani, Takeo Igarashi, Kazuo Nakazawa
Article No.: 134
DOI: 10.1145/2070781.2024168

This paper presents a lightweight sketching system that enables interactive illustration of complex fluid systems. Users can sketch on a 2.5-dimensional (2.5D) canvas to design the shapes and connections of a fluid circuit. These input sketches...

Section: Shape analysis and deformation

Interactive hybrid simulation of large-scale traffic
Jason Sewall, David Wilkie, Ming C. Lin
Article No.: 135
DOI: 10.1145/2070781.2024169

We present a novel, real-time algorithm for modeling large-scale, realistic traffic using a hybrid model of both continuum and agent-based methods for traffic simulation. We simulate individual vehicles in regions of interest using...

Pattern-guided smoke animation with lagrangian coherent structure
Zhi Yuan, Fan Chen, Ye Zhao
Article No.: 136
DOI: 10.1145/2070781.2024170

Fluid animation practitioners face great challenges from the complexity of flow dynamics and the high cost of numerical simulation. A major hindrance is the uncertainty of fluid behavior after simulation resolution increases and extra turbulent...

Interference-aware geometric modeling
David Harmon, Daniele Panozzo, Olga Sorkine, Denis Zorin
Article No.: 137
DOI: 10.1145/2070781.2024171

While often a requirement for geometric models, there has been little research in resolving the interaction of deforming surfaces during real-time modeling sessions. To address this important topic, we introduce an interference algorithm...

Imperceptible relaxation of collision avoidance constraints in virtual crowds
Richard Kulpa, Anne-Hélène Olivierxs, Jan Ondřej, Julien Pettré
Article No.: 138
DOI: 10.1145/2070781.2024172

The performance of an interactive virtual crowd system for entertainment purposes can be greatly improved by setting a level-of-details (LOD) strategy: in distant areas, collision avoidance can even be stealthy disabled to drastically speed-up...

A hybrid iterative solver for robustly capturing coulomb friction in hair dynamics
Gilles Daviet, Florence Bertails-Descoubes, Laurence Boissieux
Article No.: 139
DOI: 10.1145/2070781.2024173

Dry friction between hair fibers plays a major role in the collective hair dynamic behavior as it accounts for typical nonsmooth features such as stick-slip instabilities. However, due the challenges posed by the modeling of nonsmooth friction,...

Section: Shape analysis and deformation

General planar quadrilateral mesh design using conjugate direction field
Yang Liu, Weiwei Xu, Jun Wang, Lifeng Zhu, Baining Guo, Falai Chen, Guoping Wang
Article No.: 140
DOI: 10.1145/2070781.2024174

We present a novel method to approximate a freeform shape with a planar quadrilateral (PQ) mesh for modeling architectural glass structures. Our method is based on the study of conjugate direction fields (CDF) which allow the presence of...

Connectivity editing for quadrilateral meshes
Chi-Han Peng, Eugene Zhang, Yoshihiro Kobayashi, Peter Wonka
Article No.: 141
DOI: 10.1145/2070781.2024175

We propose new connectivity editing operations for quadrilateral meshes with the unique ability to explicitly control the location, orientation, type, and number of the irregular vertices (valence not equal to four) in the mesh while preserving...

Simple quad domains for field aligned mesh parametrization
Marco Tarini, Enrico Puppo, Daniele Panozzo, Nico Pietroni, Paolo Cignoni
Article No.: 142
DOI: 10.1145/2070781.2024176

We present a method for the global parametrization of meshes that preserves alignment to a cross field in input while obtaining a parametric domain made of few coarse axis-aligned rectangular patches, which form an abstract base complex without...

Boundary aligned smooth 3D cross-frame field
Jin Huang, Yiying Tong, Hongyu Wei, Hujun Bao
Article No.: 143
DOI: 10.1145/2070781.2024177

In this paper, we present a method for constructing a 3D cross-frame field, a 3D extension of the 2D cross-frame field as applied to surfaces in applications such as quadrangulation and texture synthesis. In contrast to the surface...

Section: Shape analysis and deformation

Material matting
Daniel Lepage, Jason Lawrence
Article No.: 144
DOI: 10.1145/2070781.2024178

Despite the widespread use of measured real-world materials, intuitive tools for editing measured reflectance datasets are still lacking. We present a solution inspired by natural image matting and texture synthesis to the material matting...

Physically-based interactive bi-scale material design
Hongzhi Wu, Julie Dorsey, Holly Rushmeier
Article No.: 145
DOI: 10.1145/2070781.2024179

We present the first physically-based interactive system to facilitate the appearance design at different scales consistently, through manipulations of both small-scale geometry and materials. The core of our system is a novel reflectance...

AppGen: interactive material modeling from a single image
Yue Dong, Xin Tong, Fabio Pellacini, Baining Guo
Article No.: 146
DOI: 10.1145/2070781.2024180

We present AppGen, an interactive system for modeling materials from a single image. Given a texture image of a nearly planar surface lit with directional lighting, our system models the detailed spatially-varying reflectance properties...

Section: Shape analysis and deformation

AppWarp: retargeting measured materials by appearance-space warping
Xiaobo An, Xin Tong, Jonathan D. Denning, Fabio Pellacini
Article No.: 147
DOI: 10.1145/2070781.2024181

We propose a method for retargeting measured materials, where a source measured material is edited by applying the reflectance functions of a template measured dataset. The resulting dataset is a material that maintains the spatial patterns of the...

Fusion of depth maps with multiple scales
Simon Fuhrmann, Michael Goesele
Article No.: 148
DOI: 10.1145/2070781.2024182

Multi-view stereo systems can produce depth maps with large variations in viewing parameters, yielding vastly different sampling rates of the observed surface. We present a new method for surface reconstruction by integrating a set of registered...

Global parametrization of range image sets
Nico Pietroni, Marco Tarini, Olga Sorkine, Denis Zorin
Article No.: 149
DOI: 10.1145/2070781.2024183

We present a method to globally parameterize a surface represented by height maps over a set of planes (range images). In contrast to other parametrization techniques, we do not start with a manifold mesh. The parametrization we compute defines a...

Section: Shape analysis and deformation

Image-based bidirectional scene reprojection
Lei Yang, Yu-Chiu Tse, Pedro V. Sander, Jason Lawrence, Diego Nehab, Hugues Hoppe, Clara L. Wilkins
Article No.: 150
DOI: 10.1145/2070781.2024184

We introduce a method for increasing the framerate of real-time rendering applications. Whereas many existing temporal upsampling strategies only reuse information from previous frames, our bidirectional technique reconstructs intermediate frames...

A shading reuse method for efficient micropolygon ray tracing
Qiming Hou, Kun Zhou
Article No.: 151
DOI: 10.1145/2070781.2024185

We present a shading reuse method for micropolygon ray tracing. Unlike previous shading reuse methods that require an explicit object-to-image space mapping for shading density estimation or shading accuracy, our method performs shading density...

Genetic programming for shader simplification
Pitchaya Sitthi-Amorn, Nicholas Modly, Westley Weimer, Jason Lawrence
Article No.: 152
DOI: 10.1145/2070781.2024186

We present a framework based on Genetic Programming (GP) for automatically simplifying procedural shaders. Our approach computes a series of increasingly simplified shaders that expose the inherent trade-off between speed and accuracy. Compared to...

An efficient alias-free shadow algorithm for opaque and transparent objects using per-triangle shadow volumes
Erik Sintorn, Ola Olsson, Ulf Assarsson
Article No.: 153
DOI: 10.1145/2070781.2024187

This paper presents a novel method for generating pixel-accurate shadows from point light-sources in real-time. The new method is able to quickly cull pixels that are not in shadow and to trivially accept large chunks of pixels thanks mainly to...

Section: Shape analysis and deformation

Data-driven visual similarity for cross-domain image matching
Abhinav Shrivastava, Tomasz Malisiewicz, Abhinav Gupta, Alexei A. Efros
Article No.: 154
DOI: 10.1145/2070781.2024188

The goal of this work is to find visually similar images even if they appear quite different at the raw pixel level. This task is particularly important for matching images across visual domains, such as photos taken over different seasons...

Arcimboldo-like collage using internet images
Hua Huang, Lei Zhang, Hong-Chao Zhang
Article No.: 155
DOI: 10.1145/2070781.2024189

Collage is a composite artwork made from assemblage of different material forms. In this work, we present a novel approach for creating a fantastic collage artform, namely Arcimboldo-like collage, which represents an input image with multiple...

Semantic colorization with internet images
Alex Yong-Sang Chia, Shaojie Zhuo, Raj Kumar Gupta, Yu-Wing Tai, Siu-Yeung Cho, Ping Tan, Stephen Lin
Article No.: 156
DOI: 10.1145/2070781.2024190

Colorization of a grayscale photograph often requires considerable effort from the user, either by placing numerous color scribbles over the image to initialize a color propagation algorithm, or by looking for a suitable reference image from which...

Rendering synthetic objects into legacy photographs
Kevin Karsch, Varsha Hedau, David Forsyth, Derek Hoiem
Article No.: 157
DOI: 10.1145/2070781.2024191

We propose a method to realistically insert synthetic objects into existing photographs without requiring access to the scene or any additional scene measurements. With a single image and a small amount of annotation, our method creates a physical...

Section: Shape analysis and deformation

Displacement interpolation using Lagrangian mass transport
Nicolas Bonneel, Michiel van de Panne, Sylvain Paris, Wolfgang Heidrich
Article No.: 158
DOI: 10.1145/2070781.2024192

Interpolation between pairs of values, typically vectors, is a fundamental operation in many computer graphics applications. In some cases simple linear interpolation yields meaningful results without requiring domain knowledge. However,...

Adaptive sampling and reconstruction using greedy error minimization
Fabrice Rousselle, Claude Knaus, Matthias Zwicker
Article No.: 159
DOI: 10.1145/2070781.2024193

We introduce a novel approach for image space adaptive sampling and reconstruction in Monte Carlo rendering. We greedily minimize relative mean squared error (MSE) by iterating over two steps. First, given a current sample distribution, we...

T&I engine: traversal and intersection engine for hardware accelerated ray tracing
Jae-Ho Nah, Jeong-Soo Park, Chanmin Park, Jin-Woo Kim, Yun-Hye Jung, Woo-Chan Park, Tack-Don Han
Article No.: 160
DOI: 10.1145/2070781.2024194

Ray tracing naturally supports high-quality global illumination effects, but it is computationally costly. Traversal and intersection operations dominate the computation of ray tracing. To accelerate these two operations, we propose a hardware...

Coherent parallel hashing
Ismael García, Sylvain Lefebvre, Samuel Hornus, Anass Lasram
Article No.: 161
DOI: 10.1145/2070781.2024195

Recent spatial hashing schemes hash millions of keys in parallel, compacting sparse spatial data in small hash tables while still allowing for fast access from the GPU. Unfortunately, available schemes suffer from two drawbacks: Multiple runs of...

Section: Shape analysis and deformation

Artist friendly facial animation retargeting
Yeongho Seol, Jaewoo Seo, Paul Hyunjin Kim, J. P. Lewis, Junyong Noh
Article No.: 162
DOI: 10.1145/2070781.2024196

This paper presents a novel facial animation retargeting system that is carefully designed to support the animator's workflow. Observation and analysis of the animators' often preferred process of key-frame animation with blendshape models...

Controlling physics-based characters using soft contacts
Sumit Jain, C. Karen Liu
Article No.: 163
DOI: 10.1145/2070781.2024197

In this paper, we investigate the impact of the deformable bodies on the control algorithms for physically simulated characters. We hypothesize that ignoring the effect of deformable bodies at the site of contact negatively affects the control...

Compression and direct manipulation of complex blendshape models
Jaewoo Seo, Geoffrey Irving, J. P. Lewis, Junyong Noh
Article No.: 164
DOI: 10.1145/2070781.2024198

We present a method to compress complex blendshape models and thereby enable interactive, hardware-accelerated animation of these models. Facial blendshape models in production are typically large in terms of both the resolution of the model and...

Stretchable and Twistable Bones for Skeletal Shape Deformation
Alec Jacobson, Olga Sorkine
Article No.: 165
DOI: 10.1145/2070781.2024199

Skeleton-based linear blend skinning (LBS) remains the most popular method for real-time character deformation and animation. The key to its success is its simple implementation and fast execution. However, in addition to the well-studied...

Section: Shape analysis and deformation

Freeform vector graphics with controlled thin-plate splines
Mark Finch, John Snyder, Hugues Hoppe
Article No.: 166
DOI: 10.1145/2070781.2024200

Recent work defines vector graphics using diffusion between colored curves. We explore higher-order fairing to enable more natural interpolation and greater expressive control. Specifically, we build on thin-plate splines which provide smoothness...

Multiscale vector volumes
Lvdi Wang, Yizhou Yu, Kun Zhou, Baining Guo
Article No.: 167
DOI: 10.1145/2070781.2024201

We introduce multiscale vector volumes, a compact vector representation for volumetric objects with complex internal structures spanning a wide range of scales. With our representation, an object is decomposed into components and each...

Slices: a shape-proxy based on planar sections
James McCrae, Karan Singh, Niloy J. Mitra
Article No.: 168
DOI: 10.1145/2070781.2024202

Minimalist object representations or shape-proxies that spark and inspire human perception of shape remain an incompletely understood, yet powerful aspect of visual communication. We explore the use of planar sections, i.e., the contours of...

Coons BVH for freeform geometric models
Yong-Joon Kim, Young-Taek Oh, Seung-Hyun Yoon, Myung-Soo Kim, Gershon Elber
Article No.: 169
DOI: 10.1145/2070781.2024203

We present a compact representation for the bounding volume hierarchy (BVH) of freeform NURBS surfaces using Coons patches. Following the Coons construction, each subpatch can be bounded very efficiently using the bilinear surface determined by...

Section: Shape analysis and deformation

Practical spectral characterization of trichromatic cameras
Martin Rump, Arno Zinke, Reinhard Klein
Article No.: 170
DOI: 10.1145/2070781.2024204

Simple and effective geometric and radiometric calibration of camera devices has enabled the use of consumer digital cameras for HDR photography, for image based measurement and similar applications requiring a deeper understanding about the...

Single view reflectance capture using multiplexed scattering and time-of-flight imaging
Nikhil Naik, Shuang Zhao, Andreas Velten, Ramesh Raskar, Kavita Bala
Article No.: 171
DOI: 10.1145/2070781.2024205

This paper introduces the concept of time-of-flight reflectance estimation, and demonstrates a new technique that allows a camera to rapidly acquire reflectance properties of objects from a single view-point, over relatively long distances and...

Estimating dual-scale properties of glossy surfaces from step-edge lighting
Chun-Po Wang, Noah Snavely, Steve Marschner
Article No.: 172
DOI: 10.1145/2070781.2024206

This paper introduces a rapid appearance capture method suited for a variety of common indoor surfaces, in which a single photograph of the reflection of a step edge is used to estimate both a BRDF and a statistical model for visible surface...

Interactive hair rendering and appearance editing under environment lighting
Kun Xu, Li-Qian Ma, Bo Ren, Rui Wang, Shi-Min Hu
Article No.: 173
DOI: 10.1145/2070781.2024207

We present an interactive algorithm for hair rendering and appearance editing under complex environment lighting represented as spherical radial basis functions (SRBFs). Our main contribution is to derive a compact 1D circular Gaussian...

Section: Shape analysis and deformation

Image smoothing via L0 gradient minimization
Li Xu, Cewu Lu, Yi Xu, Jiaya Jia
Article No.: 174
DOI: 10.1145/2070781.2024208

We present a new image editing method, particularly effective for sharpening major edges by increasing the steepness of transition while eliminating a manageable degree of low-amplitude structures. The seemingly contradictive effect is achieved in...

Convolution pyramids
Zeev Farbman, Raanan Fattal, Dani Lischinski
Article No.: 175
DOI: 10.1145/2070781.2024209

We present a novel approach for rapid numerical approximation of convolutions with filters of large support. Our approach consists of a multiscale scheme, fashioned after the wavelet transform, which computes the approximation in linear time....

GPU-efficient recursive filtering and summed-area tables
Diego Nehab, André Maximo, Rodolfo S. Lima, Hugues Hoppe
Article No.: 176
DOI: 10.1145/2070781.2024210

Image processing operations like blurring, inverse convolution, and summed-area tables are often computed efficiently as a sequence of 1D recursive filters. While much research has explored parallel recursive filtering, prior techniques do not...

Multigrid and multilevel preconditioners for computational photography
Dilip Krishnan, Richard Szeliski
Article No.: 177
DOI: 10.1145/2070781.2024211

This paper unifies multigrid and multilevel (hierarchical) preconditioners, two widely-used approaches for solving computational photography and other computer graphics simulation problems. It provides detailed experimental comparisons of these...

Section: Shape analysis and deformation

Modular Radiance Transfer
Bradford J. Loos, Lakulish Antani, Kenny Mitchell, Derek Nowrouzezahrai, Wojciech Jarosz, Peter-Pike Sloan
Article No.: 178
DOI: 10.1145/2070781.2024212

Many rendering algorithms willingly sacrifice accuracy, favoring plausible shading with high-performance. Modular Radiance Transfer (MRT) models coarse-scale, distant indirect lighting effects in scene geometry that scales from high-end GPUs to...

LightSlice: matrix slice sampling for the many-lights problem
Jiawei Ou, Fabio Pellacini
Article No.: 179
DOI: 10.1145/2070781.2024213

Recent work has shown that complex lighting effects can be well approximated by gathering the contribution of hundreds of thousands of virtual point lights (VPLs). This final gathering step is known as the many-lights problem. Due to the large...

Practical filtering for efficient ray-traced directional occlusion
Kevin Egan, Frédo Durand, Ravi Ramamoorthi
Article No.: 180
DOI: 10.1145/2070781.2024214

Ambient occlusion and directional (spherical harmonic) occlusion have become a staple of production rendering because they capture many visually important qualities of global illumination while being reusable across multiple artistic lighting...

Progressive photon beams
Wojciech Jarosz, Derek Nowrouzezahrai, Robert Thomas, Peter-Pike Sloan, Matthias Zwicker
Article No.: 181
DOI: 10.1145/2070781.2024215

We present progressive photon beams, a new algorithm for rendering complex lighting in participating media. Our technique is efficient, robust to complex light paths, and handles heterogeneous media and anisotropic scattering while provably...

Section: Shape analysis and deformation

Insitu: sketching architectural designs in context
Patrick Paczkowski, Min H. Kim, Yann Morvan, Julie Dorsey, Holly Rushmeier, Carol O'Sullivan
Article No.: 182
DOI: 10.1145/2070781.2024216

Architecture is design in spatial context. The only current methods for representing context involve designing in a heavyweight computer-aided design system, using a full model of existing buildings and landscape, or sketching on a panoramic...

Structure-preserving retargeting of irregular 3D architecture
Jinjie Lin, Daniel Cohen-Or, Hao Zhang, Cheng Liang, Andrei Sharf, Oliver Deussen, Baoquan Chen
Article No.: 183
DOI: 10.1145/2070781.2024217

We present an algorithm for interactive structure-preserving retargeting of irregular 3D architecture models, offering the modeler an easy-to-use tool to quickly generate a variety of 3D models that resemble an input piece in its...

Adaptive partitioning of urban facades
Chao-Hui Shen, Shi-Sheng Huang, Hongbo Fu, Shi-Min Hu
Article No.: 184
DOI: 10.1145/2070781.2024218

Automatically discovering high-level facade structures in unorganized 3D point clouds of urban scenes is crucial for applications like digitalization of real cities. However, this problem is challenging due to poor-quality input data, contaminated...

Conjoining Gestalt rules for abstraction of architectural drawings
Liangliang Nan, Andrei Sharf, Ke Xie, Tien-Tsin Wong, Oliver Deussen, Daniel Cohen-Or, Baoquan Chen
Article No.: 185
DOI: 10.1145/2070781.2024219

We present a method for structural summarization and abstraction of complex spatial arrangements found in architectural drawings. The method is based on the well-known Gestalt rules, which summarize how forms, patterns, and semantics are perceived...

Section: Shape analysis and deformation

Polarization fields: dynamic light field display using multi-layer LCDs
Douglas Lanman, Gordon Wetzstein, Matthew Hirsch, Wolfgang Heidrich, Ramesh Raskar
Article No.: 186
DOI: 10.1145/2070781.2024220

We introduce polarization field displays as an optically-efficient design for dynamic light field display using multi-layered LCDs. Such displays consist of a stacked set of liquid crystal panels with a single pair of crossed linear polarizers....

Computing and fabricating multilayer models
Michael Holroyd, Ilya Baran, Jason Lawrence, Wojciech Matusik
Article No.: 187
DOI: 10.1145/2070781.2024221

We present a method for automatically converting a digital 3D model into a multilayer model: a parallel stack of high-resolution 2D images embedded within a semi-transparent medium. Multilayer models can be produced quickly and cheaply and...

C1x6: a stereoscopic six-user display for co-located collaboration in shared virtual environments
Alexander Kulik, André Kunert, Stephan Beck, Roman Reichel, Roland Blach, Armin Zink, Bernd Froehlich
Article No.: 188
DOI: 10.1145/2070781.2024222

Stereoscopic multi-user systems provide multiple users with individual views of a virtual environment. We developed a new projection-based stereoscopic display for six users, which employs six customized DLP projectors for fast time-sequential...

OSCAM - optimized stereoscopic camera control for interactive 3D
Thomas Oskam, Alexander Hornung, Huw Bowles, Kenny Mitchell, Markus Gross
Article No.: 189
DOI: 10.1145/2070781.2024223

This paper presents a controller for camera convergence and interaxial separation that specifically addresses challenges in interactive stereoscopic applications like games. In such applications, unpredictable viewer- or object-motion often...

Multi-perspective stereoscopy from light fields
Changil Kim, Alexander Hornung, Simon Heinzle, Wojciech Matusik, Markus Gross
Article No.: 190
DOI: 10.1145/2070781.2024224

This paper addresses stereoscopic view generation from a light field. We present a framework that allows for the generation of stereoscopic image pairs with per-pixel control over disparity, based on multi-perspective imaging from light fields....