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SUMMARY:Spectral Edge: Making the Invisible Visible - Graham Finlayson\, U
 EA
DTSTART:20121127T143000Z
DTEND:20121127T153000Z
UID:TALK41770@talks.cam.ac.uk
CONTACT:Microsoft Research Cambridge Talks Admins
DESCRIPTION:From Computer Vision (RGB+NIR)\, to Medical (Diffusion tensor 
 imaging) to defence applications (multispectral satellite images) there ar
 e many applications where images contain more than the 3 RGB colour channe
 ls. Such images are not easily visualised since we are trichromats (can on
 ly see with three degrees of freedom). Further\, the more dimensions there
  are the more difficult it is to process these images. Thus\, there is a l
 arge literature of techniques for fusing multispectral images to lower dim
 ensional counterparts.\n\nConventional methods for image fusion suffer fro
 m two serious problems. First\, they either map N-dimensions to 1 or their
  outputs are 'pseudo colour'. In neither case is there a link to what we o
 urselves see (necessary for many applications including photography). Equa
 lly\, many colour image processing algorithms are useful only if they do c
 orrespond to our own vision (e.g. they are based on perceptual  notions su
 ch as  'hue' and 'saturation').  The second problem of existing approaches
  is that - in fusing the images together - they often introduce artefacts 
 that were not present in the original (i.e. in any of the multidimensional
  image planes).\n\nWhat we call Spectral Edge is a new paradigm for image 
 fusion which\, uniquely\, produces 'true colour' fused outputs and\, by th
 e construction of our algorithms\, delivers image fusion without artefact.
  In our talk we will present the various theoretical insights underpinning
  our method. Our initial research has prototyped our work in the areas of 
 surveillance (RGB+thermal)\, remote sensing (Landsat)\, medical imaging an
 d improving displays for colour blind observers. We present the Spectral E
 dge outputs for each of these applications.\n\nAs part of the talk\, I wil
 l also introduce some of the other research carried out in the 'Colour lab
 ' at UEA.
LOCATION:Small public lecture room\, Microsoft Research Ltd\, 7 J J Thomso
 n Avenue (Off Madingley Road)\, Cambridge
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