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Fall 2011 GRASP Seminar – Srikumar Ramalingam, Mitsubishi Electric Research Laboratories, “Localization in Urban Canyons using Omni-Skylines”

September 30, 2011 @ 11:00 am - 12:00 pm

Abstract: This seminar will focus on localization in GPS challenged urban
canyons using
skylines. In our experimental setup, a fisheye camera is
oriented upwards
to capture images of the immediate skyline, which is generally
unique and
serves as a fingerprint for a specific location in a city. We
estimate the global position by matching skylines extracted from
images to skyline segments from coarse 3D city models. Under
day-time and clear
sky conditions, we use a sky-segmentation algorithm using graph
cuts. In
cases where the skyline gets affected by partial fog, night-time
and occlusions
from trees, we use a shortest path algorithm that computes the
without prior sky segmentation. I will also briefly highlight
some of our other
results in pose and motion estimation using points, lines,
and light-paths.


- Learn More

Srikumar Ramalingam is a Research
Scientist at Mitsubishi
Electric Research Lab (MERL). He received his Ph.D. from INRIA
Rhone Alpes
(France) in 2007. His PhD was funded by Marie Curie Fellowship
from European
Union. His doctoral thesis on generic imaging models received
INPG best thesis
prize and AFRIF thesis prize (honorable mention) from the
French Association
for Pattern Recognition. His research interests include
multi-view geometry
for non-conventional camera models, discrete optimization,
localization and robotics applications.


September 30, 2011
11:00 am - 12:00 pm
Event Category: