Sketch and Sculpt Interfaces

Sketch and sculpt interfaces have often been touted as “natural” approaches to interactive design. While these metaphors are indeed a promising medium of visual communication, there are a number of inherent limitations in the motor control of the human hand, drawing or gesturing skill, perception and the ambiguities of inference, that make the leap from 2D input to 3D shape a challenging task. Over the past five years our ongoing research has produced a number of successful systems (www.ilovesketch.com, www.meshmixer.com, www.crossshade.com) that facilitate the leap from 2D input to 3D models despite these limitations.

Design-Driven Quadrangulation of Closed 3D Curves. Mikhail Bessmeltsev, Caoyu Wang, Alla Sheffer, Karan Singh. ACM Transactions on Graphics (Proc. SIGGRAPH ASIA 2012), Volume 31, Issue 5, December 2012 [PDF] [Details]

CrossShade: Shading Concept Sketches Using Cross-Section Curves. Cloud Shao, Adrien Bousseau, Alla Sheffer, Karan Singh. ACM Transactions on Graphics, SIGGRAPH, 2012. [PDF] [Details]

Concepture: A Framework for Recognizing Gestures with Repetitive Patterns. Nilgun Donmez, Karan Singh. Eurographics Sketch Based Interfaces and Modeling, SBIM 2012. [PDF] (Best Paper Award)

Elasticurves: Exploiting Stroke Dynamics and Inertia for the Real-time Neatening of Sketched 2D Curves. Yannick Thiel, Karan Singh, Ravin Balakrishnan. ACM UIST 2011 [PDF] [Slides] [Video] [Details]

Slices: A Shape-proxy Based on Planar Sections
James McCrae, Karan Singh, Niloy Mitra
SIGGRAPH Asia, 2011 [PDF] [Details]

Neatening sketched strokes using piecewise French Curves
James McCrae, Karan Singh
Sketch-Based Interfaces and Modeling, 2011
[PDF] [Project]

GeoBrush: Interactive Mesh Geometry Cloning (2011).
Kenshi Takayama, Ryan Schmidt, Karan Singh, Takeo Igarashi, Tamy Boubekeur, Olga Sorkine.
Eurographics 2011 / Computer Graphics Forum.
[PDF] [Video] [Details, Slides, Demo, Source Code]

meshmixer: an interface for rapid mesh composition (2010).
Ryan Schmidt, Karan Singh.
ACM SIGGRAPH 2010 - Talks Program
[PDF] [Video] [Project] [Program] [ACM DL]

Analytic Drawing of 3D Scaffolds (2009)
Ryan Schmidt, Azam Khan, Karan Singh, Gord Kurtenbach.
ACM TOG, 28(5) (Proc. SIGGRAPH ASIA 2009).
[PDF] [Slides] [Video] [Details]

On Expert Performance in 3D Curve-Drawing Tasks (2009)
Ryan Schmidt, Azam Khan, Gord Kurtenbach, Karan Singh.
Eurographics Symposium on Sketch-Based Interfaces and Modeling 2009.
[PDF] [Slides] [Details]

Sketch-Based Path Design James McCrae, Karan Singh. Graphics Interface, 2009.

EverybodyLovesSketch: 3D Sketching for a Broader Audience. Seok-Hyung Bae, Ravin Balakrishnan, and Karan Singh. Proceedings of ACM Symposium on User Interface Software and Technology 2009 (Victoria, BC, Canada, October 4-7, 2009), pp. 59-68 [PDF][video][Details]

ILoveSketch: As-natural-as-possible sketching system for creating 3D curve models. Seok-Hyung Bae, Ravin Balakrishnan, and Karan Singh, ACM Symposium on User Interface Software and Technology 2008 (Monterey, CA, USA, October 19-22, 2008). [PDF][video][Details]

Sketching Piecewise Clothoid Curves. James McCrae, Karan Singh. ( EG Sketch-Based Interfaces and Modeling, 2008). [PDF][video][Details] Best paper award.

Sketch-Based Procedural Surface Modeling and Compositing with Surface Trees (2008)
Ryan Schmidt, Karan Singh.
Computer Graphics Forum, 27(2), pp. 321-330. (Proceedings of Eurographics 2008).
[PDF] [Video] [Details]

Sketching and Composing Widgets for 3D Manipulation (2008)
Ryan Schmidt, Karan Singh, Ravin Balakrishnan.
Computer Graphics Forum, 27(2), pp. 301-310. (Proceedings of Eurographics 2008).
[PDF] [Video] [Details]

Sketching, Scaffolding, and Inking: A Visual History for Interactive 3D Modeling (2007)
Ryan Schmidt, Tobias Isenberg, Pauline Jepp, Karan Singh, Brian Wyvill.
Proceedings of NPAR 2007, pp. 23-32.
[PDF] [PDF Slides] [Details]

Industrial motivation for interactive shape modeling: a case study in conceptual automotive design.

Karan Singh (ACM SIGGRAPH 2006, Course Notes).

Space Deformations and their Application To Shape Modeling.

Alexis Angelidis, Karan Singh (ACM SIGGRAPH 2006, Course Notes).

An interface for 3D sculpting via physical proxy.

Jia Sheng, Ravin Balakrishnan, Karan Singh. (2006). Proceedings of GRAPHITE 2006 – International Conference on Computer Graphics and Interactive Techniques in Australasia and Southeast Asia. p. 213-220. [video]

A suggestive interface for image guided 3D sketching.

Steven Tsang, Ravin Balakrishnan, Karan Singh, Abhishek Ranjan. (2004). Proceedings of CHI 2004 – the ACM Conference on Human Factors in Computing Systems. p. 591-598.

[video]