[IPOL discuss] OpenCV and IPOL

[Nicolas Limare]

Hi,

> Thanks to all for the replies, I would like to ask if OpenCV could be
> proposed as an accepted dependency by IPOL, since it is a widely used
> library in the field of image processing.

First, I am not an OpenCV user, so everything I write may be wrong and
could need to be corrected (and I'd be glad to be corrected).

The problem with OpenCV is the API stability. Version 1 was released
in 2006, version 2 in 2009, and code written for OpenCV 1.x could not
be compiled with OpenCV 2.x. Since OpenCV i.x is not maintained
anymore, not even distributed, if IPOL had accepted code depending on
OpenCV in 2009 it would be broken today and this would defeat the
purposes of IPOL (if the code is broken, you can't verify, reuse
and/or compare it).

The OpenCV project management has changed in 2009 and again in 2012,
and I find nowhere on the project website a statement that they value
to have some API stability. In these conditions it seems risky to
accept in IPOL some code using OpenCV and expecting the library to be
availavble on the system.

> The code to be submitted also depends on GSL and BOOST, but these can be
> included on the package to be submitted.

Why couldn't you include the OpenCV code as well?

PS: All that is in the context of the current IPOL software
restrictions. A relaxed policy has been proposed at the Treilles
meeting, but I think we are not yet at the point where this can become
the main IPOL policy.

-- 
Nicolas LIMARE
http://nicolas.limare.net/                         pgp:0xFA423F4F
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