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Fall 2009 GRASP Seminar: Jana Kosecka, George Mason University, “3D Reconstruction and Semantic Parsing of Urban Environments”

October 16, 2009 @ 11:00 am - 12:00 pm

Abstract: Recent advances in techniques for capturing large scale models of
urban environments, give rise to many novel applications which require
rapid and realistic 3D modelling.  I will present an 3D reconstruction
approach utilizing properties of piecewise planarity and restricted
number of plane orientations to suppress the ambiguities causing
failures of standard dense stereo methods.  I will describe how to formulate
this problem in MRF framework built on an image presegmented into superpixels and
demonstrate superior performance in problematic scenarios containing
many repetitive structures and no or low textured regions.
Using the same type of representation, I will briefly introduce some
on-going work on semantic parsing of urban areas using spatial
co-occurence of visual words and 3D geometry. I will show some
preliminary results on challenging environments with varying viewpoints and large number of categories appearing simultaneously.


- Learn More

Jana Kosecka is an Associate Professor at the Department of
Computer Science, George Mason University. She obtained her M.S.E. in
Electrical Engineering and Computer Science from Slovak Technical
University and Ph.D. in Computer Science from University of
Pennsylvania in 1996. In 1996 – 1999 she was a postdoctoral fellow at
the EECS Department at University of California, Berkeley. She is the
recipient of David Marr’s prize (with Y. Ma, S. Soatto and S. Sastry)
and received the National Science Foundation CAREER Award. Jana is an
Associate Editor of IEEE Transactions on Robotics and a Member of the
Editorial Board of International Journal of Computer Vision. Her
general research interests are in Robotics and Computer Vision. In
particular she is interested ‘seeing’ systems engaged in autonomous
tasks, acquisition of static and dynamic models of environments by
means of visual sensing and human-computer interaction.


October 16, 2009
11:00 am - 12:00 pm
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