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Seeing in the Dark:
Night Vision Systems and Applications
31 March 2008, Monday, 7pm
Dr Alexander Toet
Senior Researcher
TNO Defense, Safety and Security
The Netherlands
Night vision devices provide the ability to see and manoeuvre during periods of reduced visibility. Currently two types of night vision devices are in use: image intensifiers or night vision goggles (NVG's) and thermal cameras. Because of their complementary nature, the fusion of NVG and thermal imagery may significantly extend the range of conditions in which the user can operate. Previously we have shown that false color rendering of fused multiband nighttime imagery can significantly improve observer performance and reaction times in tasks that involve scene segmentation and classification, like surveillance and navigation tasks. TNO recently developed a color mapping that produces night vision imagery with a natural appearance and with colors that are invariant for changes in the environmental conditions. In this presentation I will present the new color mapping procedures, and discuss the results of some preliminary observer experiments.
Presentation (PDF, 7MB, in English)
Video recording of this lecture (on Digital World's web site)
more about the lecturer
 Alexander Toet received his PhD in physics from the University of Utrecht in the Netherlands in 1987. He has worked on visual spatial localization (hyperacuity) and image processing. He is currently a senior researcher at TNO Defense, Safety and Security where he investigates image fusion, image quality, computational models of human visual search and detection, and the quantification of visual target distinctness. He is a member of IEEE. |