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PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-3816
DTSTART:20151208T180500Z
DTEND:20151208T190000Z
DTSTAMP:20240328T114457Z
LAST-MODIFIED:20150921T152408Z
LOCATION:4274 Chamberlin (refreshments will be served)
SUMMARY:Imaging around obstacles and into lunar caves using scattered
light\, Chaos & Complex Systems Seminar\, Andreas Velten\, UW Departme
nt of Molecular Biology
DESCRIPTION:The Computational Optics Group at the UW Laboratory for Op
tical and Computational Instrumentation (LOCI) develops novel imaging
systems by combining new hardware designs with novel computational ima
ge reconstruction methods. The traditional method of imaging is based
on hardware that resembles the human eye to produce images suitable fo
r analysis and pattern recognition by a human viewer. A traditional ca
mera like this only accesses a very small fraction of the information
provided by the light field. Most of the light detected by optical sys
tems occurs in the form of multiply scattered photons that can not be
used to create an image in this traditional way. In this talk I will s
how different systems that\, using custom methods to selectively captu
re and control photon time of flight\, allow us to capture information
inaccessible to a regular camera.
\n
\nOur Modular In
direct Remote Imaging System (MIRIS) uses ultrafast illumination and d
etection to collect and utilize light transport information. A laser i
s used to direct a pulse train towards one of the visible surfaces in
a scene. The light bounces off of this surface and reflects off object
s in the scene before heading back towards the visible scene where it
is imaged with high time resolution by a camera. Images of the scene a
re reconstructed from the collected time-encoded information using a m
odified backprojection algorithm.
\n
\nIn collaboratio
n with the NASA Jet Propulsion Lab\, we are performing studies to appl
y this method to explore the inside of caves on the moon from a low lu
nar orbit.
URL:https://www.physics.wisc.edu/events/?id=3816
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