[mmclose] [Up] [mmdist] Morphological Filters

mmopen
Morphological opening.

Synopsis

y = mmopen ( f , b = NullStrel )

Input

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

b Structuring Element

Default: NullStrel (3x3 elementary cross)

Output

y Image

Description

mmopen creates the image y by the morphological opening of the image f by the structuring element b. In the binary case, the opening by the structuring element B may be interpreted as the union of translations of B included in f. In the gray-scale case, there is a similar interpretation taking the functions umbra.

Examples

f=mmbinary(mmreadgray('blob.tif'))
bimg=mmbinary(mmreadgray('blob1.tif'))
b=mmimg2se(bimg)
mmshow(f)
mmshow(mmopen(f,b))
mmshow(mmopen(f,b),mmgradm(f))
f mmopen(f,b)
mmopen(f,b),mmgradm(f) 
a=mmbinary(mmreadgray('pcb1bin.tif'))
b=mmopen(a,mmsebox(2))
c=mmopen(a,mmsebox(4))
mmshow(a)
mmshow(b)
mmshow(c)
a b
c 
a=mmreadgray('astablet.tif')
b=mmopen(a,mmsedisk(18))
mmshow(a)
mmshow(b)
a b

Equation

See also

mmclose Morphological closing.
mmfreedom Control automatic data type conversion.
mmimg2se Create a structuring element from a pair of images.
mmsebox Create a box structuring element.
mmsecross Diamond structuring element and elementary 3x3 cross.
mmareaopen Area opening
mmsesum N-1 iterative Minkowski additions
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