[mmthick] [Up] [mmwatershed] | Thinning And Thickening |
Implemented in Python.
y | Image Binary image. |
mmthin creates the binary image
y
by performing a thinning of the binary image
f
. The number of iterations of the thinning is
n
and each iteration is performed by subtracting the points that are detect in
f
by hit-miss operators characterized by rotations of
theta
of the interval
Iab
. When
n
is infinite and the interval is
mmhomothin
(default conditions),
mmthin gives the skeleton by thinning.
def mmthin(f, Iab=None, n=-1, theta=45, DIRECTION="CLOCKWISE"): from Numeric import product from string import upper if Iab is None: Iab = mmhomothin() DIRECTION = upper(DIRECTION) assert mmisbinary(f),'f must be binary image' if n == -1: n = product(f.shape) y = f zero = mmintersec(f,0) for i in range(n): aux = zero for t in range(0,360,theta): sup = mmsupgen( y, mminterot(Iab, t, DIRECTION)) aux = mmunion( aux, sup) y = mmsubm( y, sup) if mmisequal(aux,zero): break return y
mmfreedom | Control automatic data type conversion. |
mmcthin | Image transformation by conditional thinning. |
mmthick | Image transformation by thickening. |
mmendpoints | Interval to detect end-points. |
mmhomothin | Interval for homotopic thinning. |
mmse2hmt | Create a Hit-or-Miss Template (or interval) from a pair of structuring elements. |
[mmthick] [Up] [mmwatershed] | ![]() |
Copyright (c) 2003, Roberto A. Lotufo, UNICAMP-University of Campinas; Rubens C. Machado, CenPRA-Renato Archer Research Center. |