[Digikam-devel] [Bug 149485] Advanced image resize for the digikam editor

[Gilles Caulier]

https://bugs.kde.org/show_bug.cgi?id=149485





--- Comment #163 from Gilles Caulier <caulier gilles gmail com>  2009-04-27 23:27:22 ---
To Julien #160:

>1- First we should use the Lqr library properly, in the current code each time
>we resize we rebuild every thing from scratch ! but Lqr library maintains data
>structures to have a quicker rescale after the first rescale if we use it
>properly, we simply do not use this for the time being, I will talk about that
>with Gilles.

I'm hear you... (private mail in French ?)

>4- Parallel computation: we could compute the paths of minimum energy using
>several threads.

Real parallel programing can be done using OpenMP standard. Advantage : if you
have multi-core cpu, thread are dispatched finelly between core. It supported
by GCC and other main compiler. LibRaw use it to parallelize demosaicing
operations.
Suggestion : use it directly into lqr, if posible of course.

>5- Seamcarving on GPU, it is possible to do I have seen on the web a student
>who did this, but it is hard IMHO to get something portable.

Definitivly a wrong way for me...

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