[mmcdil] [Up] [mmdil] Dilations And Erosions

mmcero
Erode an image conditionally.

Synopsis

y = mmcero( f, g, b = None, n = 1 )

Implemented in Python.

Input

f	Image Gray-scale (uint8 or uint16) or binary image.
g	Image Gray-scale (uint8 or uint16) or binary image. Conditioning image.
b	Structuring Element Default: `None` (3x3 elementary cross)
n	Double Non-negative integer. (number of iterations). Default: `1`

Output

Image

Description

mmcero creates the image y by eroding the image f by the structuring element b conditionally to g. This operator may be applied recursively n times.

Examples

>>> f = mmneg(mmtext('hello'))

>>> mmshow(f)

>>> g = mmdil(f,mmseline(7,90))

>>> mmshow(g)

>>> a1=mmcero(g,f,mmsebox())

>>> mmshow(a1)

>>> a13=mmcero(a1,f,mmsebox(),13)

>>> mmshow(a13)


f	g	a1	a13

Equation

Source Code
        def mmcero(f, g, b=None, n=1):
    if b is None: b = mmsecross()
    y = mmunion(f,g)
    for i in range(n):
        aux = y
        y = mmunion(mmero(y,b),g)
        if mmisequal(y,aux): break
    return y
    
      

mmero	Erode an image by a structuring element.
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.
mmsuprec	Sup-reconstruction.

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

mmcero Erode an image conditionally.