[Digikam-devel] [Bug 152192] resize really bad qualitatively

[Cristian Tibirna]

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http://bugs.kde.org/show_bug.cgi?id=152192         




------- Additional Comments From tibirna kde org  2007-11-13 19:35 -------
Fabien

Thanks a lot for a really great research. This is a good basis to start in case it proves to be necessary.

Yes, indeed, I speak of the image scaling algo, not of the on-screen zoom algo. Speaking of which, I should have mentioned it, the on-screen zoom is really really good. It's better than GIMP's default image scaling. 

To explain: a 3000x2000 photo shown as "fit to screen" (about 25% zoom -- on my screen at least) is about the same (pixel) size _on screen_ as the same photo, resized at 800x600 photo and shown 100% on screen. But the 3000x2000 photo at 25% zoom looks way better (i.e. with almost no visible resizing artifacts) than the 800x600 at 100%.

I know this doesn't help much, but perhaps hints to comparing on-screen zooming (i.e. temporary resizing) with actual image scaling (permanent resizing).

And yes, time permitting, I will try to look at the kipi code too.

Thanks a lot.