SAR image delineation of multiple targets in close proximity

Konferenz: EUSAR 2006 - 6th European Conference on Synthetic Aperture Radar
16.05.2006 - 18.05.2006 in Dresden, Germany

Tagungsband: EUSAR 2006

Seiten: 4Sprache: EnglischTyp: PDF

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Moate, C. P.; Denton, J. (QinetiQ, UK)

This paper considers the problem of automatic outline extraction for vehicle targets in SAR imagery. A technique involving multiple active-contours evolving simultaneously is developed and tested on real radar data. A novel algorithm is developed to overcome the problem of evolving multiple contours. Initial results show a problem with the multiple contour approach; the algorithm converges to local minima in which contours include pixels which should belong to neighbouring targets. Improvements to overcome this are presented and compared. In particular, a technique referred to as multiple hypothesis delineation, in which the contours can be in several states simultaneously, is developed and shown to lead to a considerable improvement in the convergence time and delineation error obtained.