[Numpy-discussion] Adjacent matrix

Thiago Franco Moraes totonixsame@gmail....
Tue Jun 14 08:29:38 CDT 2011


On Mon, Jun 13, 2011 at 5:03 PM, Gael Varoquaux
<gael.varoquaux@normalesup.org> wrote:
> Hi,
>
> You can probably find some inspiration from
> https://github.com/scikit-learn/scikit-learn/blob/master/scikits/learn/feature_extraction/image.py
>
> Gaël

Hi Gaël,

I don't know if I understand. The idea is to use _make_edges_3d to
give me the connectivity, isn't it? Like for example, a 3x3 image:

0, 1, 2
3, 4, 5
6, 7, 8

If I use _make_edges_3d(3, 3) I get:

array([[0, 1, 3, 4, 6, 7, 0, 1, 2, 3, 4, 5],
       [1, 2, 4, 5, 7, 8, 3, 4, 5, 6, 7, 8]])

So, for example, the pixel 4 is connected with 3, 5, 7 and 1
(connectivity 4). Is it?

The problem is I need to work with connectivity 26 in 3D images, or 8
in 2D images. I'm not able to understand the code so well to apply to
those connectivity I said (8 and 26). Do you think it is possible?

Thanks Gaël,

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