This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.

# Dilation

 Dilationgives the morphological dilation of image with respect to the structuring element ker. Dilationgives the dilation with respect to a range r square.
• Dilation works with binary, grayscale, and other images.
• The structuring element ker is a matrix containing s and s.
• Dilation automatically adds zeros to structuring elements so that they have odd dimensions.
• If multiple image channels are present, Dilation operates on each of them separately.
• Dilation takes a Padding option that specifies the values to assume for pixels outside the image.
• The default setting is Padding, corresponding to pixel value for all channels.
Dilation removes smaller dark features:
Dilation of a binary image:
Grayscale dilation:
Dilate horizontally:
Dilate vertically:
Dilate with a disk-shaped structuring element:
Dilation removes smaller dark features:
 Out[1]=

Dilation of a binary image:
 Out[2]=

Grayscale dilation:
 Out[1]=

Dilate horizontally:
 Out[1]=

Dilate vertically:
 Out[1]=

Dilate with a disk-shaped structuring element:
 Out[1]=
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