Python connected components with pixel list

Question

In matlab you can use

cc = bwconncomp(bimg);
pixels = cc.PixelIdxList{i}

To get pixel list of each connected components. What\'s the pyth

Answer 1

To get pixel list of a connected component with some_label (e.g. some_label=1), if you have a labeled image:

pixels = numpy.argwhere(labeled_image == some_label)

See numpy.argwhere.

And see also this similar question.

Answer 2

The regionprops function in scikit-image returns the property "coords", an (N, 2) ndarray coordinate list (row, col) of the region. I ran into the same problem and am using this to get the pixel list from the label array.