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SUMMARY:Efficient space-variant deconvolution - Stefan Harmeling\, Max-Pla
 nck Institute
DTSTART:20110609T090000Z
DTEND:20110609T100000Z
UID:TALK31718@talks.cam.ac.uk
CONTACT:Microsoft Research Cambridge Talks Admins
DESCRIPTION:Blur in photos due to camera shake\, blur in astronomical imag
 e \nsequences due to atmospheric turbulence\, and blur in magnetic \nreson
 ance imaging sequences due to object motion are examples of blur that can 
 not be adequately described as a space-invariant convolution\, because suc
 h blur varies across the image. In this talk\, we present a class of linea
 r transformations\, that are expressive enough for space-variant blurs\, b
 ut at the same time especially designed for efficient matrix-vector-multip
 lications. Successful results on the above-mentioned examples and on lens 
 correction demonstrate the practical \nsignificance of our approach.
LOCATION:Small lecture theatre\, Microsoft Research Ltd\, 7 J J Thomson Av
 enue (Off Madingley Road)\, Cambridge
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