From: Ullrich Koethe (koethe_at_[hidden])
Date: 2006-10-17 20:39:59
Joel de Guzman wrote:
> Lubomir Bourdev wrote:
>>This is why in GIL we allow the type of the result to be specified
>>explicitly upon invoking the operation. Promotion traits can at best be
>>useful for a reasonable default, but even then we feel that they belong
>>in boost::type_traits and not in an image library, as the problem
>>generalizes beyond images.
> I agree. I am not quite fond of monolithic libraries that do everything.
> Promotion traits and clamping, for example, can also be useful for, say,
> signal processing of audio, among other things.
True. But on the other hand, one has to control the number of external
dependencies -- if a potential user must install 5 or 10 other libraries
first, he might quickly loose interest.
In image processing, one wants at least libjpeg, libtiff, libpng (which in
turn requires zlib), perhaps a fourier transform library, possibly boost,
a linear algebra library (for warping and curve fitting), a GUI library
(which often already comes with incompatible image import/export
functionality) and so on -- there is certainly a trade-off between
internal and external solutions. Of course, there are platforms where
installation is easy, but you want to be general.
-- ________________________________________________________________ | | | Ullrich Koethe Universitaet Hamburg / University of Hamburg | | FB Informatik / Dept. of Informatics | | AB Kognitive Systeme / Cognitive Systems Group | | | | Phone: +49 (0)40 42883-2573 Vogt-Koelln-Str. 30 | | Fax: +49 (0)40 42883-2572 D - 22527 Hamburg | | Email: u.koethe_at_[hidden] Germany | | koethe_at_[hidden] | | WWW: http://kogs-www.informatik.uni-hamburg.de/~koethe/ | |________________________________________________________________|
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