Decompose structuring element.
Returns a strel object se that can be indexed with () to obtain
the decomposed structuring elements that can be used to "rebuild" se.
Decomposing a structuring element may lead to faster operations by replacing a single operation with a large se (large nhood), with multiple operations with smaller se.
Most functions will automatically perform SE decomposition provided a
strel object is used (instead of a logical array). This also requires
that specific shapes are specified instead of "arbitrary", since
it may prevent SE decomposition.
See also: imdilate, imerode, strel.
Package: image