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mmopenth
Opening Top Hat.

Synopsis

y = mmopenth ( f , b = NullStrel )

Input

f Image Gray-scale (uint8 or uint16) or binary image

b Structuring Element

structuring element

Default: NullStrel (3x3 elementary cross)

Output

y Image Gray-scale (uint8 or uint16) or binary image

(same type of f).

Description

mmopenth creates the image y by subtracting the morphological opening of f by the structuring element b of f itself.

Examples

a = mmreadgray('keyb.tif')
mmshow(a)
b = mmopenth(a,mmsebox(3))
mmshow(b)
a b

Equation

See also

mmfreedom Control automatic data type conversion.
mmcloseth Closing Top Hat.
mmopenrecth Open-by-Reconstruction Top-Hat.
mmgradm Morphological gradient.
mmopen Morphological opening.
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