Used to:
- Increase the object area
- accentuate features
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A kernel(a matrix of odd size(3,5,7) is convolved with the image.Here,matrix of size=5 is used.
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A pixel element in the original image is ‘1’ if atleast one pixel under the kernel is ‘1’.
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Thus,Dilation increases the white region in the image or size of foreground object increases.