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Laser gated viewing : An enabler for Automatic Target Recognition?

Author: Bovenkamp, E.G.P. · Schutte, K.
Type:article
Date:2010
Publisher: SPIE
Place: Bellingham, WA
Institution: TNO Industrie en Techniek TNO Defensie en Veiligheid
Source:Turner, M.D.Kamerman, G.W., Laser Radar Technology and Applications XV, 6 April 2010. Orlando, FL. USA
series:
Proceedings of SPIE
Identifier: 364411
doi: doi:10.1117/12.849644
ISBN: 9780819481481
Article number: 76840Z
Keywords: Image processing · Automatic Target Recognition · Laser gated viewing · 2D objects · 3D data · Camera systems · Gated viewing · Operational applications · Pixel values · Range images · Single images · Automatic target recognition · Cameras · Optical radar · Radar · Targets · Three dimensional · Image segmentation · Laser gated viewing · Automatic target recognition · Target classification · Image processing

Abstract

For many decades attempts to accomplish Automatic Target Recognition have been made using both visual and FLIR camera systems. A recurring problem in these approaches is the segmentation problem, which is the separation between the target and its background. This paper describes an approach to Automatic Target Recognition using a laser gated viewing system. Here laser-flash illumination is used in combination with a gating viewer such that only a small part in the distance domain is seen in a single image. In our approach, using an Intevac LIVAR 4000 imaging system, we combined several images with different gate settings to construct a 3D data cube. This paper describes the preprocessing and filtering steps taken to obtain a range image for which pixel values represent the distance between camera and objects in the illuminated scene. Depth segmentation is performed using the global histogram of this range image. After this depth segmentation very good 2D object segmentations can be obtained which can be used to classify persons and vehicles. An outlook will be given towards operational application of this procedure.