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Fonction iterate_structure - module scipy.ndimage

Signature de la fonction iterate_structure

def iterate_structure(structure, iterations, origin=None) 

Description

iterate_structure.__doc__

    Iterate a structure by dilating it with itself.

    Parameters
    ----------
    structure : array_like
       Structuring element (an array of bools, for example), to be dilated with
       itself.
    iterations : int
       number of dilations performed on the structure with itself
    origin : optional
        If origin is None, only the iterated structure is returned. If
        not, a tuple of the iterated structure and the modified origin is
        returned.

    Returns
    -------
    iterate_structure : ndarray of bools
        A new structuring element obtained by dilating `structure`
        (`iterations` - 1) times with itself.

    See also
    --------
    generate_binary_structure

    Examples
    --------
    >>> from scipy import ndimage
    >>> struct = ndimage.generate_binary_structure(2, 1)
    >>> struct.astype(int)
    array([[0, 1, 0],
           [1, 1, 1],
           [0, 1, 0]])
    >>> ndimage.iterate_structure(struct, 2).astype(int)
    array([[0, 0, 1, 0, 0],
           [0, 1, 1, 1, 0],
           [1, 1, 1, 1, 1],
           [0, 1, 1, 1, 0],
           [0, 0, 1, 0, 0]])
    >>> ndimage.iterate_structure(struct, 3).astype(int)
    array([[0, 0, 0, 1, 0, 0, 0],
           [0, 0, 1, 1, 1, 0, 0],
           [0, 1, 1, 1, 1, 1, 0],
           [1, 1, 1, 1, 1, 1, 1],
           [0, 1, 1, 1, 1, 1, 0],
           [0, 0, 1, 1, 1, 0, 0],
           [0, 0, 0, 1, 0, 0, 0]])