New Dimension for Sketches
Author(s): Roman Zenka, Pavel Slavik.
Proceedings: SCCG 2003,
2003.
[BibTeX] 
Abstract:
We propose a method for creating ’smart’ sketches of freeform
3D objects. A 2D sketch of an object drawn by the
user is enriched with information about its 3D structure.
With the help of our system, the user can rotate the created
sketch of the object and view it from various angles. Since
most of the user input is a traditional 2D sketch, the system
is very easy to use and doesn’t limit the user’s creativity.
Our approach closely simulates the way 3D objects
are drawn by artists. The user first models by sketching
a simple 3D skeleton of the desired object. A more detailed
sketch of the object is drawn in 2D over the skeleton.
The skeleton helps the user to maintain correct proportions
while drawing. Using the 3D skeleton, the system
helps the user rotate the sketch. This way a hybrid model
of an object is created - although being essentially 2D, the
model can be rotated smoothly and viewed from various
angles.