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SUMMARY:Scale-invariant analysis of light fields using Lisad spaces
DTSTART:20141103T161500
DTEND:20141103T174500
DTSTAMP:20260502T214721Z
UID:c36fe259c1d26217808856abb2f7ec27e9555169d157d60ce80aa759
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr Ivana Tošić\, Ricoh Innovations\nRecent development of ha
 nd-held plenoptic cameras has brought light field acquisition into many pr
 actical and low-cost imaging applications. The acquired light fields captu
 re both spatial and angular information of light rays passing through the 
 camera aperture. As such\, they intrinsically capture 3D information of th
 e imaged scene. However\, 3D scene reconstruction and analysis from light 
 fields still remains a challenge due to their high dimensionality and thei
 r particular structure. To address this problem\, we propose a new theory 
 for scale-invariant 3D analysis of light fields via the construction of Li
 ght field scale-and-depth (Lisad) spaces\, which are parametrized both in 
 terms of scale of objects recorded by a light field and in terms of object
 s' depth. I will show two applications of Lisad spaces: dense depth estima
 tion and 3D keypoint detection from light fields. In both cases\, our algo
 rithms based on Lisad spaces outperform their respective prior art counter
 parts. Moreover\, their implementation requires only local processing\, wh
 ich shows great potential for integration of Lisad-based methods into futu
 re computer vision architectures for plenoptic cameras.\nThis is joint wor
 k with Kathrin Berkner at Ricoh Innovations\, Corp.\nBio:Ivana Tošić rec
 eived a Ph.D. degree in computer and communication sciences from the Swiss
  Federal Institute of Technology (EPFL)\, Switzerland in 2009\, and a Dipl
 .Ing. degree in telecommunications from the University of Niš\, Serbia in
  2003. From 2009 to 2011\, she was a postdoctoral researcher at the Redwoo
 d Center for Theoretical Neuroscience\, University of California at Berkel
 ey\, where she studied computational mechanisms of depth perception from b
 inocular vision. Since 2011\, Dr. Tošić has been a member of research st
 aff at Ricoh Innovations\, Corp.\, Menlo Park\, California\, working in th
 e computational optics and visual processing group. Her research interests
  lie in the intersection of image processing and computational neuroscienc
 e domains and include binocular vision\, image and 3-D scene representatio
 n\, depth perception\, representation and coding of the plenoptic function
 \, and computational photography.
LOCATION:MXG 110 http://plan.epfl.ch/http://plan.epfl.ch/?lang=fr&room=htt
 p%3a%2f%2fplan.epfl.ch%2f
STATUS:CONFIRMED
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