Dilation and erosion
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Dilation and erosion are two fundamental morphological operations used to modify binary images. Dilation adds pixels to object boundaries in an image, while erosion removes pixels from object boundaries. The number of pixels added or removed depends on the size and shape of the structuring element, which is a matrix of 1's and 0's used to probe the image and determine changes.
Dilation and erosion
- 2. DILATION AND EROSION • These are two fundamental morphological operations. • Morphological operations -a collection of non-linear operations related to the shape or morphology of features in an image • Dilation adds pixels to the boundaries of objects in an image • Erosion removes pixels on object boundaries
- 7. Structuring element • The number of pixels added or removed from the objects in an image depends on the size and shape of the structuring element • It’s a matrix of 1’s and 0’s • The center pixel of the structuring element, called the origin
- 8. Origin of a Diamond-Shaped Structuring Element
- 9. Dilation program BW = zeros(9,10); BW(4:6,4:7) = 1 SE = strel('square',3) BW2 = imdilate(BW,SE)