PhD Thesis Proposal Defence


"ShapePalettes: An Interactive Approach to 3D Markup"

by

Mr. Tai Pang WU


Abstract:

We propose, ShapePalettes, an interactive approach to specify 3D
shape in a single view. This approach provides an intuitive way to ex-
ploit our ability to infer 3D shape from 2D information ranging from
simple suggestive 2D strokes, to line art, to sketches, to images of real
objects. The interaction is as follows: draw a 2D primitive in the 2D
view and then link its 3D shape by drawing a corresponding primitive
on a shape-palette which is represented as Lambertian-shaded image of
any familiar shape whose local 3D orientation is readily understand-
able. The 3D orientation from the shape-palette is transferred to the
2D primitive via this markup. Similar to how color palettes allow the
user to attribute color to 2D primitives, the ShapePalette provides
a metaphor for assigning 3D information to the 2D primitive. Un-
like painting by color, the 3D markup requires only sparse input from
which dense 3D information can be effectively interpolated.
As we will demonstrate, this 3D markup approach can create a variety
of expressive 3D surfaces and models. And while we believe we have
only begun to realize the potential of this interaction approach, we
can already demonstrate its usefulness in several non-trivial tasks,
from free-hand 3D sketching, to image-based markup over image and
photographs for a variety of applications.


Date:     		Wednesday, 14 February 2007

Time:                   2:00p.m.-4:00p.m.

Venue:                  Room 3416
			lifts 17-18

Committee Members:      Dr. Chi Keung Tang (Supervisor)
                        Dr. Huamin Qu (Chairperson)
			Dr. Albert Chung
			Dr. Philip Fu
			Prof. Long Quan


**** ALL are Welcome ****