poilvert/scikits-image — comment on commit 5e9ad08b8031752473d182a7b8f9858ee92f2e52
File: doc/examples/plot_gabors_from_lena.py line 56
By stefanv:

rgb2gray should normalize the image for you--so not sure you want to divide by 255. You can always be sure what you get out by using:

```
from skimage import img_as_float
lena = img_as float(...)
```

Of course, I don't expect you to know about all these little utilities, but they turn out to be super handy! We have a much better understanding now of how to handle data-types, and the result is less confusion (we think :-).