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Morphological technique for clutter suppression in ATR

This paper presents a morphological filtering technique that can be used for clutter suppression or target feature extraction. By using a special ring-shaped structuring element, the proposed morphological filter can either preserve or eliminate objects in sensor imagery based on size and shape characteristics. The ring-shaped structuring element makes the filter invariant to target rotation. Thus, detection performance is substantially improved for cases where the target width information is either inaccurate or insufficient for successful differentiation between targets and image clutter.