Program

Note for presenters:
Talks are 20 minutes with 5 minutes for questions. There will be a laptop available if needed, but please feel free to bring your own.

Saturday August 1st

8:30	Registration opens
9:00-10:30	Hello plus Keynote (Mark D. Gross)
10:45-12:15	Sketching, Comics and Images
	Sketch-Based Interaction and Calligraphic Tags to Create Comics Online Authors: Manuel J. Fonseca, Ricardo Abreu Lopes, Tiago Cardoso, and Nelson Silva
	A Sketch-based interface for photo pop-up Authors: Jonathan Ventura, Stephen DiVerdi and Tobias Hallerer
	A Descriptor for Large Scale Image Retrieval based on Sketched Feature Lines Authors: Mathias Eitz, Marc Alexa, Tamy Boubekeur, and Kristian Hildebrand
12:15-1:30	Lunch break on your own
1:30-3:00	Sketching and Surfaces
	Modeling from Contour Drawings Authors: Vladislav Kraevoy, Michiel van de Panne, and Alla Sheffer
	Editing Level-Set Models with Sketched Curves Manolya Eyiyurekli, Cindy Grimm, and David Breen
	Sketch-Based Subdivision Surfaces Authors: Ahmad Nasri, Faramarz Samavati, and Wajih Halim Bou Karam
3:15-4:45	Modeling Beautifully with Multi-touch
	Sketching Subdivision Surfaces Authors: Matthias Bein, Sven Havemann, and Andre Stork
	Towards Beautification of Freehand Sketches using Suggestions Authors: Sundar Murugappan and Karthik Ramani
	Multi-touch Focus+Context Sketch-based Interaction Authors: Uwe Hahne, Jonas Schild, Stefan Elstner, and Marc Alexa
7:30	Dinner banquet NPAR and SPIM will be holding a joint banquet dinner on Saturday night at Mulate's, which is within walking distance of the convention center. Dinner will be served at 7:30pm. Additional tickets are $70 and include alcohol. Please let Nathan Carr know as soon as possible if you want to bring a guest. [map]

Sunday August 2nd

9:00-10:30	Recognition Algorithms
	Automatic Evaluation of Sketch Recognizers Authors: Paul Schmieder and Beryl Plimmer
	Sort, Merge, Repeat: An algorithm for Effectively Finding Corners in Hand-sketched Strokes Authors: Aaron Wolin, Brandon Paulson and Tracy Hammond
	Revisiting ShortStraw - Improving Corner Finding in Sketch-Based Interfaces Authors: Yiyan Xiong and Joseph J. LaViola
10:45-12:15	Data Collection
	The Effect of Task on Classification Accuracy: Using Gesture Recognition Techniques in Free-Sketch Recognition Authors: Martin Field, Sam Gordon, Eric Peterson, Raquel Robinson, Tom Stahovich, and Christine Alvarado
	Games for Sketch Data Collection Authors: Gabe Johnson and Ellen Yi-Luen Do
	Tools for the Efficient Generation of Hand-Drawn Corpora based on Context-Free Grammars Authors: Scott MacLean, David Tausky, George Labahn, Edward Lank, and Mirette Marzouk
12:15-1:30	Lunch break on your own
1:30-3:30	User Studies
	On Expert Performance in 3D Curve-Drawing Tasks Authors: Ryan Schmidt, Azam Khan, Karan Singh, and Gord Kurtenbach
	VolumeViewer: An Interactive Tool for Fitting Surfaces to Volume Data Authors: Ross Sowell, Lu Liu, Tao Ju, Cindy Grimm, Christopher Abraham, Garima Gokhroo, and Daniel Low
	A Usability Evaluation of AlgoSketch: A Pen-Based Application for Mathematics Authors: Theresa O Connell, Timothy Miller, Joseph J. LaViola, and Robert Zeleznik
	Shadow Buttons: Exposing WIMP-Functionality while Preserving the Inking Surface in Sketch-Based Interfaces Authors: Diane Marinkas, Joseph J. LaViola, and Robert Zeleznik
3:30-3:45	Closing remarks
3:45-5:15	NPAR: Emulating the Masters and Artistic Interfaces Note: This paper session is part of NPAR 2009 and is located at the convention center.
	Stippling by Example Authors: SungYe Kim, Ross Maciejewski, Tobias Isenberg, William M. Andrews, Wei Chen, Mario Costa Sousa, and David S. Ebert
	Appearance-guided Synthesis of Element Arrangements by Example Authors: Thomas Hurtut, Pierre-Edouard Landes, Joëlle Thollot, Yann Gousseau, Rémy Drouilhet, and Jean-François Coeurjolly
	Airbrush Simulation for Artwork and Computer Modeling Authors: Jonathan Konieczny and Gary Meyer
5:15-6:45	NPAR capstone talk and closing Note: This talk is part of NPAR 2009 and is located at the convention center.