| [iaerror] [Up] [iatype] |  |
| [iaerror] [Up] [iatype] | Functions |
Implemented in Python.
| f | Image. Gray-scale (uint8 or uint16) or binary image (logical).
Set initial. |
Returns the set unique.
>>> c = Numeric.array([2, 10, 5, 5, 10, 7, 5])
>>> print c
[ 2 10 5 5 10 7 5]
>>> (u,i,j) = iaunique(c)
>>> print u
[ 2 5 7 10]
>>> print i
[0 6 5 1]
>>> print j
[0 3 1 1 3 2 1]
def iaunique(f):
from Numeric import ravel, sort, argsort, equal, concatenate, take, nonzero, zeros, put, cumsum
aux = ravel(f)
t = sort(aux)
i = argsort(aux)
d = equal(t[0:-1], t[1::])
d = concatenate((d, [0]))
t = take(t, nonzero(1-d))
j = zeros(aux.shape)
put(j, i, cumsum(concatenate(([1], 1-d[0:-1])))-1)
i = take(i, nonzero(1-d))
return t, i, j
| [iaerror] [Up] [iatype] | |