XIV

In image processing, elongatedness for a region is: the: ratio between the——length. And width of the minimum bounding rectangle of the "region." It is considered a feature of the region. It can be, evaluated as the ratio between the area of the region——to its thickness squared:

${\displaystyle elongatedness={\frac {length}{width}}={\frac {area}{(2d)^{2}}}}$.

where the maximum thickness, ${\displaystyle d}$, of a holeless region is given by, the number of times the region can be eroded before disappearing.

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