# Papers presented at SIGGRAPH 2015

### Phasor imaging for resolving the problem of multi-path interference

**Phasor Imaging: A Generalization of Correlation-Based Time-of-Flight Imaging**

Mohit Gupta, *Columbia University
*Shree Nayar,

*Columbia University*

Matthias B. Hullin,

*Rheinische Friedrich-Wilhelms-Universität Bonn*

Jaime Martin,

*Rheinische Friedrich-Wilhelms-Universität Bonn*

*Can you briefly describe how time-of-flight imaging systems work, and their applications?*

*How does your approach differ from traditional time-of-flight imaging systems?*

*What interested you about this particular problem? What were the difficult or unexpected challenges?*

*How efficient is your approach?*

*Why present your paper at SIGGRAPH?*

### Synthesizing stripe patterns on triangulated surfaces

**Stripe Patterns on Surfaces**

Felix Knöppel,

*Technische Universität Berlin*

Keenan Crane,

*Columbia University*

Ulrich Pinkall,

*Technische Universität Berlin*

Peter Schröder,

*California Institute of Technology*

*What motivated you and your co-authors to work on a new method for computationally simulating stripes?*

*and*angles everywhere else. As you add more and more singularities, the map gets closer and closer to being perfect (or “isometric”) away from these isolated points. The current paper is one step in that direction, where we just focus on one of two coordinates, i.e., just longitude rather than longitude and latitude. As you can see from the pictures, our longitude lines are already looking pretty good!

*Can you describe at a high level the main innovation of your paper? How much of a departure is your method from previous methods on generating stripes?*

*What insight prodded you and your co-authors to think new singularities would render more realistic stripe patterns?*

*Your image of a rabbit with embedded cacti stripes made the cover of this month’s*ACM Transactions on Graphics.

*Of all the possible images to be seen at SIGGRAPH this month, why do you think yours was chosen?*

### A method for interactively deforming shapes

**Linear Subspace Design for Real-Time Shape Deformation**

Yu Wang,

*University of Pennsylvania*

Alec Jacobson,

*Columbia University, ETH Zürich*

Jernej Barbič,

*University of Southern California*

Ladislav Kavan,

*University of Pennsylvania*

*What is the practical application of your work?*

*What is the technical innovation that allowed you to reduce the time of calculations?*

*When can people in industry expect to be able to interactively deform shapes using your method?*

### Transforming almost any object into a Rubik’s Cube

Category: Fabrication & Function, Wednesday, August 12, 10:45 am to 12:15 pm

**Computational Design of Twisty Joints and Puzzles **

Timothy Sun, * Columbia University*

Changxi Zheng, *Columbia University*

**Precisely aligning colors and patterns to arbitrary 3D objects**

**Computational Hydrographic Printing**

Yizhong Zhang,

*Zhejiang University*

Chunji Yin,

*Zhejiang University*

Changxi Zheng,

*Columbia University*

Kun Zhou,

*Zhejiang University*

*Discrete viscous sheets*by Batty, C., Uribe, A., Audoly, B., and Grinspun, E., 2012), the researchers model the floating color film as a thin viscous sheet to simulate the distortion of the film as an object is immersed; from this information, they can establish a mapping between the points on the color film to their eventual locations on the object and compute a new pixel image.

**Vortex sheets: A faster, more efficient method for simulating bubbles **

**A Double Bubbles Sans Toil and Trouble: Discrete Circulation-Preserving Vortex Sheets for Soap Films and Foams**Fang Da,

*Columbia University*

*University of Waterloo*

*Institute of Science and Technology Austria*

*Columbia University*

**8/25/2015**