[mmero] [Up] [mmasf] Morphological Filters

mmcenter
Center filter.

Synopsis

y = mmcenter( 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

mmcenter creates the image y by computing recursively the morphological center, relative to the structuring element b, of the image f .

Examples

>>> f=mmreadgray('gear.tif')

>>> g=mmcenter(f,mmsedisk(2))

>>> mmshow(f)

>>> mmshow(g)


f	g

Equation

Center filter primitive:

Center filter:

Source Code
        def mmcenter(f, b=None):
    if b is None: b = mmsecross()
    y = f
    diff = 0
    while not diff:
        aux = y
        beta1 = mmasf(y,'COC',b,1)
        beta2 = mmasf(y,'OCO',b,1)
        y = mmunion(mmintersec(y,beta1),beta2)
        diff = mmisequal(aux,y)
    return y
    
      

mmfreedom	Control automatic data type conversion.
mmclose	Morphological closing.
mmopen	Morphological opening.
mmimg2se	Create a structuring element from a pair of images.
mmsebox	Create a box structuring element.
mmsecross	Diamond structuring element and elementary 3x3 cross.

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

mmcenter Center filter.