In
image processing
An image is a visual representation of something. It can be two-dimensional, three-dimensional, or somehow otherwise feed into the visual system to convey information. An image can be an artifact, such as a photograph or other two-dimensiona ...
, 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:
.
where the maximum thickness,
, of a holeless region is given by the number of times the region can be
eroded before disappearing.
Shape representation and description: Region-based shape representation and description
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References
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Image processing