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Edge Detection

Edges are very important to any vision system (biological or machine).

An edge may be regarded as a boundary between two dissimilar regions in an image.

These may be different surfaces of the object, or perhaps a boundary between light and shadow falling on a single surface.

In principle an edge is easy to find since differences in pixel values between regions are relatively easy to calculate by considering gradients.

tex2html_wrap_inline2984 David Marshall 1994-1997