[Colloquium] TTIC Colloquium: Yaser Sheikh, CMU
Liv Leader
lleader at ttic.edu
Fri Sep 23 15:03:17 CDT 2011
REMINDER:
When: Monday, September 26 @ 11 a.m.
Where: TTIC Conference Room #526, 6045 S. Kenwood Avenue, 5th Floor
Who: Yaser Sheikh, CMU
Title: Structure from Motion in the Wild: Towards Reconstructing
Active 3D Scenes from Moving Cameras
Abstract: Our social environments abound with activity: faces
expressing and emoting, people ambulating and gesticulating, and
vehicles locomoting. These same environments are increasingly being
imaged by cameras that people carry or wear. In this talk, I will
discuss research into reconstructing active environments from cameras
that may themselves be moving --- a problem that requires the marriage
of geometric reconstruction and statistical representation of
time-varying data.
I will first present an algorithm to reconstruct the motion of a
collection of cameras constrained by an underlying articulated
structure. The algorithm has been applied for motion capture using
multiple body-mounted cameras. Results will be shown in settings where
capture would be difficult with traditional motion capture systems,
including walking outside and swinging on monkey bars.
A central challenge in reconstructing active 3D structure is
representation. I will present trajectory-based models of active
objects and describe a closed form solution for the estimation of
time-varying 3D structure. I will conclude by motivating the use of
spatiotemporal models for representing active environments and
describe the significant open problems in the area.
Host: Raquel Urtasun, rurtasun at ttic.edu
--
Liv Leader
Human Resources Coordinator
Toyota Technological Institute
6045 S Kenwood Ave
Chicago, IL 60637
Phone- (773) 702-5033
Fax- (773) 834-9881
Email- lleader at ttic.edu <jam at ttic.edu>
Web- www.ttic.edu
<http://www.ttic.edu/>
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