[mminfrec] [Up] [mmopenrec] Connected Operators

mminpos
Minima imposition.

Synopsis

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

Implemented in Python.

Input

f Image Binary image.

Marker image.
g Image Gray-scale (uint8 or uint16) image.

input image.
bc Structuring Element

(connectivity).

Default: None (3x3 elementary cross)

Output

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

Description

Minima imposition on g based on the marker f. mminpos creates an image y by filing the valleys of g that does not cover the connect components of f. A remarkable property of y is that its regional minima are exactly the connect components of g.

Equation

Source Code

def mminpos(f, g, bc=None):
    if bc is None: bc = mmsecross()
    assert mmisbinary(f),'First parameter must be binary image'
    fg = mmgray(mmneg(f),mmdatatype(g))
    k1 = mmlimits(g)[1] - 1
    y = mmsuprec(fg, mmintersec(mmunion(g, 1), k1, fg), bc)
    return y

See also

mminfrec Inf-reconstruction.
mmwatershed Watershed detection.
mmcwatershed Detection of watershed from markers.
mmfreedom Control automatic data type conversion.
mmsebox Create a box structuring element.
mmsecross Diamond structuring element and elementary 3x3 cross.
[mminfrec] [Up] [mmopenrec] Python
Copyright (c) 2003, Roberto A. Lotufo, UNICAMP-University of Campinas; Rubens C. Machado, CenPRA-Renato Archer Research Center.