Dilation Example


Dilation is one of the elementary operators of Mathematical Morphology, that is, it is a building block for a large class of operators.

The key process in the dilation operator is the local comparison of a shape, called structural element, with the object to be transformed. When the structural element is positioned at a given point and it touches the object, then this point will appear in the result of the transformation, otherwise it will not.

The images bellow show an original object and the result of its dilation by a 3x3 square structural element.

The image bellow shows the original object (yellow foreground), the transformed object (white foreground), and the structural element (red foreground) when positioned in a critical point.

The images bellow shows a more complex object and the result of its dilation by a digital disk as a structural element.

The image bellow show the input image (black), the transformed image (white) and some structural elements (red) in critical points.

The following images show the effect of the dilation process by the same disk used in the previous example but using gray level images.



Back to the initial page