[mmclose] [Up] [mmdist] Morphological Filters

mmopen
Morphological opening.

Synopsis

y = mmopen( f, b = None )

Implemented in Python.

Input

f	Image Gray-scale (uint8 or uint16) or binary image.
b	Structuring Element Default: `None` (3x3 elementary cross)

Output

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

Source Code
        def mmopen(f, b=None):
    if b is None: b = mmsecross()
    y = mmdil(mmero(f,b),b)
    return y
    
      

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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Copyright (c) 2003, Roberto A. Lotufo, UNICAMP-University of Campinas; Rubens C. Machado, CenPRA-Renato Archer Research Center.

mmopen Morphological opening.