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We discuss a new morphological operations using double structuring elements (DSEs) and apply them to edge sharpening of the ultrasound images with speckle. The DSEs, a couple of two different structuring elements, varying with the local characteristics of the processing image, yield an edge-sharpening effect, which general single structuring element does not have. Our method sharpens the boundary without speckle emphasis, overshoot nor undershoot because it is based on geometrical characteristics of the image components.

Gray Scale Morphology Using Double Structuring Elements and Their Application to Contrast Enhancement for Ultrasound Images