Build requirements

[Chris Colbert]

It is possible to change the name of the wrapped functions, but I
don't for two reason:

1) they are the same name as the opencv functions they wrap, so If you
know opencv you'll feel right at home
2) if you do from scikits.image.opencv import *, you get quite a few
names into your namespace, the majority of them begin with cv or CV so
the likelyhood of namespace pollution is low.

Let me know if you have other questions.

I will have a look at that error. Thanks!

Cheers!

Chris

On Thu, Nov 5, 2009 at 3:56 AM, Tony S Yu <tsyu80 at gmail.com> wrote:
>
>
> On Nov 4, 2009, at 8:58 PM, Chris Colbert wrote:
>
>>
>> Hey Tony,
>>
>> Thanks for the report.
>>
>> Can you paste the error you are getting so I know exactly what
>> decorator it is concering?, there may be a way to change it to work
>> with Python 2.5
>
> The error I got came from importing the io module.
>
>>>> import scikits.image.io
> Traceback (most recent call last):
>  File "<string>", line 1, in <module>
>  File "/Users/Tony/python/devel/scikits.image/scikits/image/io/__init__.py",
> line 15, in <module>
>    from collection import *
>  File
> "/Users/Tony/python/devel/scikits.image/scikits/image/io/collection.py",
> line 157, in <module>
>    class ImageCollection(object):
>  File
> "/Users/Tony/python/devel/scikits.image/scikits/image/io/collection.py",
> line 241, in ImageCollection
>    @as_grey.setter
> AttributeError: 'property' object has no attribute 'setter'
>
> This error should be easy to fix, but I thought that using Python 2.6 might
> be intentional; i.e. that was the intended target. I guess it's not clear
> which python the scikit targets---hence the requirements file :). Does the
> scikit target the same python version as scipy?
>
>>
>> There is some overlap between scipy.ndimage and the OpenCV stuff. But
>> realize, the OpenCV in the scikit are just wrappers for the OpenCV
>> libraries, of which you need at least version 2.0 (there were some
>> backwards incompatible changes made in 2.0). That said, my personal
>> experience is that OpenCV is much faster than the routines in ndimage.
>> I have timed the OpenCV 2D convlution at 100x - 1000x faster than
>> ndimage.
>
> This performance difference is exactly what I was curious about. Just out of
> curiosity, is it possible to rename the wrapped functions---the cv prefix
> seems redundant. (I don't actually have opencv installed; I'm just trying to
> cause trouble. ;)
>
>>
>> OpenCV is not a HARD requirement for the scikit. You can still install
>> it and use everything else without having the opencv libs on your
>> machine, but if and when you add them, the wrappers will "just work",
>> you wont need to rebuild the scikit.
>
> Agreed, I have the requirements separated into required and optional.
>
> Thanks,
> -Tony
>
>>
>> Cheers!
>>
>> Chris
>