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Figure 25: Variation of gradient magnitude along probe line
Figure 26: Gradient of the magnitude result showing edge of objects in the image
3.5.3
Distance Map approach
The distance operation is used for the particle segmentation before
the watershed operation. It calculates the distance function of a binary
image onto a gray level image, as the sum of successive erosions. In the
output image O, a pixel x belonging to a particle X, takes an intensity
I equal to the distance in pixel units to the boundary [Avizo, 2009].
The distxxx is command is used for the distance operation because it
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