BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Operational Refinement of Image Processing (ORIP) - Yiannis Andreo
 poulos (UCL)
DTSTART:20100420T150000Z
DTEND:20100420T160000Z
UID:TALK24022@talks.cam.ac.uk
CONTACT:Eiko Yoneki
DESCRIPTION:Main idea: We present a novel software framework for image pro
 cessing tasks that combines packing of input bitplanes in order to process
  multiple increments of the input together and increment previously-comput
 ed results. The resulting framework for incremental computation is validat
 ed using transform decompositions\, 2D convolution and cross-correlation\,
  and frame-by-frame block matching.\n\nKey results: The execution time res
 ults with bitplane-based computation indicate that the proposed approach c
 an be comparable or superior to conventional (non incremental) computation
  for several cases. We have also investigated results under real-time sche
 duling and were able to demonstrate that\, by exploiting the incremental n
 ature of the proposed computation\, the worst-case (“digital world”) a
 pproach of: ‘Can this image processing task be performed in X frames-per
 -second?’ changes to the best-effort (“analog world”) approach of: 
 ‘What is the achieved quality when this task is performed in X frames-pe
 r-second?’. \nSimilarly\, we present power-distortion results demonstrat
 ing that the proposed software-based incremental computation allows for se
 amless prolongation of the battery life of a low-power device with a simpl
 e change of output quality level. Finally an interesting application for r
 egion-of-interest computation is presented.\n\nFurther research: Even thou
 gh the proposed framework deals with linear or quadratic operations\, we d
 iscuss the possibility of application to other (non-linear) types operatio
 ns\, which is non-trivial and requires further research.Papers and softwar
 e: http://www.ee.ucl.ac.uk/~iandreop/ORIP.html\n\nBio: Yiannis Andreopoulo
 s received the Ph.D. degree in applied sciences from the Vrije Universitei
 t Brussel\, Brussels\, Belgium\, in 2005\, as well as the M.Sc. degree in 
 signal and image processing systems and the Electrical Engineering Diploma
 \, both from the University of Patras\, Patras\, Greece.\n\nHe is presentl
 y Lecturer at the Department of Electronic and Electrical Engineering\, Un
 iversity College London\, London\, U.K. His research interests are in the 
 domain of multimedia signal processing.\n
LOCATION:FW26\, Computer Laboratory\, William Gates Builiding
END:VEVENT
END:VCALENDAR