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Another way of extracting and representing information from an image
is to group pixels together into regions of similarity. This process
is commonly called segmentation. In
- -- we would group pixels together
according to the rate of change of their intensity over a region.
- -- we group together pixels according to the
rate of change of depth in the image, corresponding to pixels lying
on the same surface such as a plane, cylinder, sphere etc.
There are two main approaches to segmentation.
David Marshall 1994-1997