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SUMMARY:The shadowy life of many webcams - Robert Pless\, Washington Unive
 rsity in St. Louis
DTSTART:20140423T090000Z
DTEND:20140423T100000Z
UID:TALK52211@talks.cam.ac.uk
CONTACT:Microsoft Research Cambridge Talks Admins
DESCRIPTION:The web has an enormous collection of live cameras view image 
 parks\, roads\, cities\, beaches\, mountains\, ski-resorts\, buildings and
  more. Over the last 7 years\, I have been archiving imagery from most (>2
 5000) publically available outdoor cameras\, and working to understand how
  to effectively use this massively distributed resource as a tool for meas
 urement of our changing world.\nI will talk about approaches to visualizin
 g very long term time-lapse imagery\, and talk specifically about recent w
 ork in understanding outdoor shadows and the geometric constraints that re
 late shadows to 3D shape.  \n\nIn the context of working with half a billi
 on images from uncontrolled webcams I will conclude with some problems tha
 t have turned out to be more challenging that we expected\, and some oppor
 tunities in applications domains including environmental measurement (phen
 ology measurement) and public health (measuring physical activity behaviou
 rs).\n
LOCATION:Auditorium\, Microsoft Research Ltd\, 21 Station Road\, Cambridge
 \, CB1 2FB
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