Title :
Context-aided false alarm reduction for SAR automatic target recognition
Author :
Mathieu-Marni, Sandrine ; Kuttikkad, Shyam ; Chellappa, Rama
Author_Institution :
INRIA, Sophia-Antipolis, France
Abstract :
This paper introduces techniques for context-aided false alarm reduction for automatic target recognition (ATR) in airborne synthetic aperture radar (SAR) images. Candidate target pixels are identified using constant false alarm rate (CFAR) detection. If only a single radar image is available, a 2-D site model is constructed and used to determine regions inhospitable to targets. In multipass imagery, false alarm reduction is based on consistent appearance of the target blob in two or more images after registration. Finally, a target-versus-clutter discrimination based on size, shape and intensity features further reduces false alarms in preparation for target recognition algorithms
Keywords :
airborne radar; feature extraction; image registration; image resolution; radar clutter; radar imaging; radar target recognition; synthetic aperture radar; 2D site model; CFAR detection; automatic target recognition; clutter discrimination; constant false alarm rate; context-aided false alarm reduction; high-resolution airborne SAR; image registration; intensity features; multipass imagery; radar image; shape; size; synthetic aperture radar; target pixels; target recognition algorithms; Detectors; Educational institutions; Image recognition; Radar detection; Radar imaging; Radar scattering; Shape; Statistics; Synthetic aperture radar; Target recognition;
Conference_Titel :
Image Processing, 1997. Proceedings., International Conference on
Conference_Location :
Santa Barbara, CA
Print_ISBN :
0-8186-8183-7
DOI :
10.1109/ICIP.1997.648108
