Morphology: Erosion - Erosion is one of two fundamental operations (the other being dilation) in morphological image processing which all other morphological operations are based. It was originally defined for binary images, later being extended to grayscale images, and subsequently to complete lattices. -Morphology: Erosion -　Erosion is one of two fundamental operations (the other being dilation) in morphological image processing　which all other morphological operations are based. It was originally defined for binary images, later being extended to grayscale images, and subsequently to complete lattices.