How to invert black and white with scikit-image?

Question

I read an image with ndimage, which results in a binary image like this:

Answer 1

I like Pamungkas Jayuda's anwer, but it works only on the assumption that your data is an integer. In my case, I just used simple inversion with a small value on the denominator to avoid division by zero:

1 / (2e5 + img)