ILoveSketch: As-Natural-As-Possible Sketching System for Creating 3D Curve Models
http://www.dgp.toronto.edu/~shbae/ilovesketch.htm
Free-from Sketching with Variational Implicit Surfaces
SKETCH: An Interface for Sketching 3D Scenes
Teddy: A Sketching Interface for 3D Freeform Design
Character Animation Creation using Hand-drawn Sketches