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MORPH_THIN

Syntax | Return Value | Arguments | Keywords | Examples |Version History | See Also

The MORPH_THIN function performs a thinning operation on binary images. The thinning operator is implemented by first applying a hit or miss operator to the original image with a pair of structuring elements, and then subtracting the result from the original image.

This routine is written in the IDL language. Its source code can be found in the file morph_thin.pro in the lib subdirectory of the IDL distribution.

Syntax

Result = MORPH_THIN ( Image, HitStructure, MissStructure )

Return Value

In typical applications, this operator is repeatedly applied with the two structuring elements, rotating them after each application, until the result remains unchanged.

Arguments

Image

A one-, two-, or three-dimensional array upon which the thinning operation is to be performed. The image is treated as a binary image with all nonzero pixels considered as 1.

HitStructure

A one-, two-, or three-dimensional array to be used as the hit structuring element. The elements are interpreted as binary values — either zero or nonzero. This structuring element must have the same number of dimensions as the Image argument.

MissStructure

A one-, two-, or three-dimensional array to be used as the miss structuring element. The elements are interpreted as binary values — either zero or nonzero. This structuring element must have the same number of dimensions as the Image argument.


Note
It is assumed that the HitStructure and the MissStructure arguments are disjoint.

Keywords

None.

Examples

See Thinning Image Objects for examples.

Version History

5.3
Introduced

See Also

DILATE, ERODE, MORPH_CLOSE, MORPH_DISTANCE, MORPH_GRADIENT, MORPH_HITORMISS, MORPH_OPEN, MORPH_TOPHAT

  IDL Online Help (March 06, 2007)