Shape reconstruction from multiple views
Speaker: Sylvain Paris , MIT CSAIL
Date: October 5 2005
Time: 2:45PM to 3:45PM
Location: Patil/Kiva Seminar Room (32-G449)
Host: Mario Christoudias and Gerald Dalley, MIT CSAIL
Contact: Mario Christoudias and Gerald Dalley, 3-4278, 3-6095, cmch@csail, dalleyg@mit
Relevant URL: In recent years, the increased use of computer-generated images and movies has
driven a need for digital content. I will focus on the creation of 3D geometry and
propose a technique for acquiring the 3D shape of an object from several
photographs of it. Ultimately, the goal is to have a lightweight acquisition method to
produce models usable for further processing such as rendering, relighting and so
on.
I will expose how the minimal cut of a graph can be used as a powerful optimization
engine. This leads to a reconstruction algorithm that recovers accurate heightfields.
This approach is then extended by considering the object surface as a collection of
small patches. I will discuss the theoretical properties and consequences of such a
representation. In addition, I will show that the representation can practically
express a broad range of shapes, including non-spherical topology.
This work is made in collaboration with François Sillion (INRIA Grenoble, France),
Long Quan and Zeng Gang (HKUST, Hong Kong).
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