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mmopenth
Opening Top Hat.

Synopsis

function y = mmopenth ( f , b )

Input

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

Default: 3x3 elementary cross

structuring element

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

Algorithm

function y=mmopenth_equ( f, b)
  y = mmsubm(f,mmopen(f,b);

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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