Statistics with a human face: surfaces, shapes and anatomy

Adrian Bowman (University of Glasgow)

Monday 6th October, 2014 16:00-17:00 Maths 326


Three-dimensional surface imaging, through laser-scanning or 
  stereo-photogrammetry, provides high-resolution data defining the
  surface shape of objects.  In an anatomical setting this can provide 
  invaluable quantitative information, for example on the success 
  of surgery.  Two particular applications are in the success of 
  breast reconstruction and in facial surgery following conditions
  such as cleft lip and palate.  An initial challenge is to extract
  suitable information from these images, to characterise the surface
  shape in an informative manner.  Landmarks are traditionally used
  to good effect but these clearly do not adequately represent the 
  very much richer information present in each digitised images.  
  Curves with clear anatomical meaning provide a good compromise
  between informative representations of shape and simplicity of
  structure, as well as providing guiding information for full surface
  representations.  Some of the issues involved in analysing data of 
  this type will be discussed and illustrated.  Modelling issues include
  the measurement of asymmetry and longitudinal patterns of growth.
  This is a talk which involves some very interesting problems and 
  statistical models.  It also has geometry and topology at its heart.
  The current methods there are undoubtedly (embarrassingly?) naive
  but I’m hoping others will be able to advise on how to do this better!

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