GUI tools and upsizing

[Emmanuelle Gouillart]

Hi Neil,

just answering quickly to your second question (someone will still have
to answer the first one!).

> 2. I'm currently working with large images and it often useful to work
> with down-sampled versions. A quick way to do this is using views:

> im_small = im[::4, ::4]

> Is there a quick way to do the inverse? i.e. something like:

> im_big = im[::0.25, ::0.25]

> At the moment I'm just resizing the image, which has more overhead.
> Anything I'm missing?

I use scipy.ndimage.zoom for this purpose.

Cheers,
Emmanuelle