skimage is marked for autoremoval from testing

[Stefan van der Walt]

Hi Josh

On 2015-08-15 09:25:33, Josh Warner <silvertrumpet999 at gmail.com> 
wrote:
> Three potential solutions come to mind: 
>
>    - Remove `lena` from the package, raising an error informing 
>    the user  the image is not free and directing them to 
>    `astronaut`.  - Simply alias all queries for `lena` to 
>    `astronaut`, with a warning.  - Instead of loading from disk, 
>    have `imread` obtain this image from a  permalinked 
>    URL. Ideally an aliased one we can redirect if a host 
>    dies. We  could have a couple fallback URLs, too. Biggest 
>    question is what to do if  no internet connection is 
>    available.
>
> I favor the first or third solutions.

I am in favor of option 1.  I think option 3 still will allow our 
users to accidentally use copyrighted imagery, while our policy is 
that all images are freely redistributable.

The problem is that Lena was used to generate a whole bunch of 
tests results in Matlab, stored as .npy files.  I no longer have 
access to the script that generated those.  Looking at those tests 
(mostly in the morphology submodule), I think it would be better 
if we could re-engineer the tests to look at image properties, 
rather than to compare them pixel-for-pixel to MATLAB results. 
Doing that will require some work.

Stéfan