Saturday—Sunday July 4–5

[Graduate School]

Monday July 6

08:15 —09:00 Registration
09:00 Opening
09:15 Keynote: Robert J. Lang (Chair: Mirela Ben-Chen)
From Flapping Birds to Space Telescopes: The Art and Science of Origami
10:15 —10:45 Coffee Break
10:45 —12:45 Session: Descriptors and Shape Synthesis (Chair: Daniele Panozzo)
Mathieu Carrière, Steve Oudot, Maks Ovsjanikov
Stable Topological Signatures for Points on 3D Shapes
Davide Boscaini, Jonathan Masci, Simone Melzi, Michael Bronstein, Umberto Castellani, Pierre Vandergheynst
Learning Class-specific Descriptors for Deformable Shapes Using Localized Spectral Convolutional Networks
Haibin Huang, Evangelos Kalogerakis, Benjamin Marlin
Analysis and Synthesis of 3D Shape Families via Deep-learned Generative Models of Surfaces
Riccardo Roveri, A. Cengiz Öztireli, Sebastian Martin, Barbara Solenthaler, Markus Gross
Example Based Repetitive Structure Synthesis
12:45 —14:00 Lunch Break
14:00 —15:00 Session: Fabrication (Chair: Etienne Vouga)
Yong-Liang Yang, Jun Wang, Niloy J. Mitra
Reforming Shapes for Material-aware Fabrication
Daniele Panozzo, Olga Diamanti, Sylvain Paris, Marco Tarini, Evgeni Sorkine, Olga Sorkine-Hornung
Texture Mapping Real-World Objects with Hydrographics
15:00 —15:30 Coffee Break
15:30 —17:00 Session: Registration (Chair: Misha Kazhdan))
Yizhi Tang, Jieqing Feng
Hierarchical Multiview Rigid Registration
Jingyu Yang, Ke Li, Kun Li, Yu-Kun Lai
Sparse Non-rigid Registration of 3D Shapes
Andrea Tagliasacchi, Matthias Schröder, Anastasia Tkach, Sofien Bouaziz, Mario Botsch, Mark Pauly
Robust Articulated-ICP for Real-Time Hand Tracking
17:00 —18:00 Poster Session and Presentations (Chair: Ligang Liu)
Luca Cosmo: Consistent Partial Matching of Shape Collections via Sparse Modeling
Emanuele Rodola: Partial Functional Correspondence
Nico Schertler: Global Optimality for Streaming Orientation of Point Cloud Normals
Mihai-Sorin Stupariu: Discrete curvatures for triangle meshes derived from terrain point cloud data
Serena Morigi: Object Partitioning based on a new dynamic strategy for shape diameter analysis
Benedek Nagy: A Combinatorial 4-Coordinate System for the Face Centered Cubic Grid
Kevin Houston: Title Compressed Manifold Modes: Fast Calculation and Natural Ordering
18:00 —19:00 Welcome Reception

Tuesday July 7

08:45 Registration
09:15 Keynote: Amit Singer (Chair: Leif Kobbelt)
Solving the 3-D Puzzle of Rotation Assignment in Single Particle Cryo-Electron Microscopy
10:15 —10:45 Coffee Break
10:45 —12:15 Session: Correspondence and Matching (Chair: Evangelos Kalogerakis)
Itay Kezurer, Shahar Z. Kovalsky, Ronen Basri, Yaron Lipman
Tight Relaxation of Quadratic Matching
Etienne Corman, Maks Ovsjanikov, Antonin Chambolle
Continuous Matching via Vector Fields Flow
Robert Herzog, Daniel Mewes, Michael Wand, Leonidas Guibas, Hans-Peter Seidel
LeSSS: Learned Shared Semantic Spaces for Relating Multi-Modal Representations of 3D Shapes
12:30 —14:00 Lunch Break
14:00 —15:30 Session: Numerical Methods for Geometry Processing (Chair: Marc Alexa)
Misha Kazhdan
Fast and Exact (Poisson) Solvers on Symmetric Geometries
O. Civit-Flores, A. Susin [CG Forum paper]
Robust Treatment of Degenerate Elements in Interactive Corotational FEM Simulations
Theodore Kim
Quaternion Julia Set Shape Optimization
15:30 —16:00 Coffee Break
16:00 —17:30 Session: Geometry and Images (Chair: Maks Ovsjanikov)
Tuanfeng Y. Wang, Pushmeet Kohli, Niloy J. Mitra
Dynamic SfM: Detecting Scene Changes from Image Pairs
James W. Hennessey, Niloy J. Mitra
An Image Degradation Model for Depth Augmented Image Editing
Fabian Prada, Misha Kazhdan
Unconditionally Stable Shock Filters for Image and Geometry Processing
18:30 Conference Dinner (Prato, Sackstr. 16)

Wednesday July 8

08:45 Registration
09:00 Keynote: Mark Pauly (Chair: Pierre Alliez)
The Beauty of Geometry
10:00 —10:30 Coffee Break
10:30 —12:30 Session: Quads and Polygons (Chair: David Bommes)
Philipp Herholz, Jan Eric Kyprianidis, Marc Alexa
Perfect Laplacians for Polygon Meshes
Amir Vaxman [CG Forum paper]
A Projective Framework for Polyhedral Mesh modeling
Faniry H. Razafindrazaka, Ulrich Reitebuch, Konrad Polthier
Perfect Matching Quad Layouts for Manifold Meshes
Kestitutis Karciauskas, Jörg Peters
Can bi-cubic surfaces be class A?
12:30 —14:00 Lunch Break
14:00 —15:00 Session: Curves and Graphs (Alec Jacobson)
Nadav Dym, Anna Shtengel, Yaron Lipman
Homotopic Morphing of Planar Curves
Vitaliy Kurlin
A Homologically Persistent Skeleton of an Unstructured Point Cloud in any Metric Space
15:00 Best Paper Awards, Software Award, and Closure

Keynote Talks: Abstracts

Robert J. Lang: From Flapping Birds to Space Telescopes: The Art and Science of Origami

The last decade of this past century has been witness to a revolution in the development and application of mathematical techniques to origami, the centuries-old Japanese art of paper-folding. The techniques used in mathematical origami design range from the abstruse to the highly approachable. In this talk, I will describe how geometric concepts led to the solution of a broad class of origami folding problems – specifically, the problem of efficiently folding a shape with an arbitrary number and arrangement of flaps, and along the way, enabled origami designs of mind-blowing complexity and realism, some of which you’ll see, too. As often happens in mathematics, theory originally developed for its own sake has led to some surprising practical applications. The algorithms and theorems of origami design have shed light on long-standing mathematical questions and have solved practical engineering problems. I will discuss examples of how origami has enabled safer airbags, Brobdingnagian space telescopes, and more. [July 6, 09:15]

Amit Singer: Solving the 3-D Puzzle of Rotation Assignment in Single Particle Cryo-Electron Microscopy

Single particle cryo-electron microscopy (EM) recently joined X-ray crystallography and nuclear magnetic resonance (NMR) spectroscopy as a high-resolution structural method for biological macromolecules. In single particle cryo-EM, the 3-D structure needs to be determined from many noisy 2-D projection images of individual, ideally identical frozen-hydrated macromolecules whose orientations and positions are random and unknown (i.e., random X-ray transform). This lecture will explore algorithms for estimating the unknown pose parameters. The main focus will be on semidefinite programming relaxations that are based on the Fourier transform over the group SO(3). Such semidefinite programs can be viewed as extensions to existing approximation algorithms to max-cut and unique games, two fundamental problems in theoretical computer science. The approach is quite general and can be used to handle other groups of transformations that arise in other applications in signal processing, image analysis, computer vision and computer graphics. [July 7, 09:15]

Mark Pauly: The Beauty of Geometry

In this talk, I want to convey what fascinates me about geometry. I will exemplify how nature and art can provide inspiration for research and how research in turn can inspire artists or lead to unexpected means for design. The core of the talk will be a personal and highly subjective speculation on the beauty of geometry. In the course of this discussion, I will reflect on several of our past and current projects to highlight how the same fundamental geometry processing problems re-occur in many guises. Connecting the dots between seemingly disparate research projects can hopefully provide insights into the general nature of these problems, but also reveal when specialized solutions are called for. The talk will conclude with a discussion of potential future challenges for geometry processing, both in terms of open problems, but also in the way we operate as a research community. [July 8, 09:00]