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Studies in Sketch-Based Modeling

Julie Dorsey
Yale University

December 10th, 2009
SAGE 3101, 4:00 p.m. to 5:00 p.m.
Refreshments at 3:30 p.m.


Despite substantial advances in computer graphics modeling and rendering, designers continue to favor freehand sketching for conceptual design. In this talk, I'll describe two recent projects in sketch-based modeling, both of which have architectural design as the driving application. The first, Sketching Reality, is a system that converts a freehand sketch into a realistic-looking model. As the sketch is being drawn, our system periodically interprets its 2.5D-geometry by identifying new junctions, edges, and faces, and then analyzing the extracted topology. The user can add detailed geometry and textures through sketches as well. The final product is a realistic texture-mapped 2.5D-model of a building. The second project, Mental Canvas, is a system that supports conceptual architectural design and analysis. We use as a starting point the traditional sketchbook drawings that architects use to experiment with various views, sections, and details. Rather than interpret or infer 3D structure from drawings, our system is designed to allow the designer to organize concept drawings in 3D, and gradually fuse a series of possibly geometrically-inconsistent sketches into a set of 3D strokes. Our system uses strokes and planar "canvases" as basic primitives; the basic mode of input is traditional 2D drawing. Along the way, I'll suggest several remaining open problems.


Julie Dorsey is a Professor of Computer Science at Yale University, where she teaches computer graphics. She came to Yale in 2002 from MIT, where she held tenured appointments in both the Department of Electrical Engineering and Computer Science (EECS) and the School of Architecture. She recieved undergraduate degrees in architecture and graduate degrees in computer science from Cornel University. Her research interests include photorealistic image synthesis, material and texture models, illustration techniques, and interactive visualization of complex scenes. In addition to serving on numerous conference program committees, she is an associate editor for ACM Transactions on Graphics, Foundations and Trends in Computer Graphics and Vision, and The Visual Computer, and was papers chair for ACM SIGGRAPH 2006. She has recieved several professional awards, including MIT's Edgerton Faculty Achievement Award, a National Science Foundation Career Award, an Alfred P. Sloan Foundation Research Fellowship, and a Yale McCredie Fellowship.

Hosted by: Dr. Barbara Cutler (x3274)

Last updated: November 24, 2009