[mmhmax] [Up] [mminpos] Connected Operators

mminfrec
Inf-reconstruction.

Synopsis

y = mminfrec( f, g, bc = None )

Implemented in Python.

Input

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

Marker image.

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

Conditioning image.

Structuring Element

Structuring element ( connectivity).

Default: None (3x3 elementary cross)

Output

Image

Description

mminfrec creates the image y by an infinite number of recursive iterations (iterations until stability) of the dilation of f by bc conditioned to g. We say the y is the inf-reconstruction of g from the marker f. For algorithms and applications, see Vinc:93b.

Examples

Binary image:

>>> g=mmreadgray('text_128.tif')

>>> f=mmero(g,mmseline(9,90))

>>> y=mminfrec(f,g,mmsebox())

>>> mmshow(g)

>>> mmshow(f)

>>> mmshow(y)


g	f	y

Gray-scale image:

>>> g=mmneg(mmreadgray('n2538.tif'))

>>> f=mmintersec(g,0)

Warning: Converting input image from int32 to uint8.

>>> f=mmdraw(f,'LINE:40,30,60,30:END')

>>> y30=mmcdil(f,g,mmsebox(),30)

>>> y=mminfrec(f,g,mmsebox())

>>> mmshow(g)

>>> mmshow(f)

>>> mmshow(y30)

>>> mmshow(y)


g	f	y30	y

Equation

Source Code
        def mminfrec(f, g, bc=None):
    from Numeric import product
    if bc is None: bc = mmsecross()
    n = product(f.shape)
    y = mmcdil(f,g,bc,n);
    return y
    
      

mmfreedom	Control automatic data type conversion.
mmsuprec	Sup-reconstruction.
mmsebox	Create a box structuring element.
mmsecross	Diamond structuring element and elementary 3x3 cross.
mmcdil	Dilate an image conditionally.

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

mminfrec Inf-reconstruction.