Recognition of Articulated and Occluded Objects

ÐA model-based automatic target recognition (ATR) system is developed to recognize articulated and occluded objects in Synthetic Aperture Radar (SAR) images, based on invariant features of the objects. Characteristics of SAR target image scattering centers, azimuth variation, and articulation invariants are presented. The basic elements of the new recognition system are described and performance results are given for articulated, occluded and occluded articulated objects and they are related to the target articulation invariance and percent unoccluded. Index TermsÐArticulation invariance, automatic target recognition, azimuth variance, empirical performance modeling, geometric hashing, synthetic aperture radar images.