Better document / advertise the dispatching mechanism

[m-albert]

I think that for most of dask-image's functionality the documentation is very informative. Especially because most functions can be used in the same way as their ndimage counterparts and for knowing which functions are available the function coverage table does a great job.

However I feel that dask-image's super cool dispatching functionality is under documented / advertised.

@GenevieveBuckley @jakirkham What do you think about adding a page "Array backends" or "GPU support" (better names welcome?) to the documentation?

[jakirkham]

Sounds like a good idea to me!

[GenevieveBuckley]

What do you imagine the contents of this page would be?

I think it's a good idea, just not sure what you want to put in it.
Maybe a little demo example script, and a link to the function coverage table? Or more in-depth explanations of any specific things?

[m-albert]

What do you imagine the contents of this page would be?

Mostly a mention and short explanation of the dispatching functionality and perhaps a little example script as you say. Since this is really a dask-image specific API, it's probably less obvious how to use when compared to e.g. the mirrored ndimage functionality. Also the new doc page could be linked from "dask-image GPU support" as well.

Unfortunately I didn't have time to get back to this yet (but I'd be happy if someone would). Copying here a screenshot from a slide I once used