Ralph Shumaker wrote:
I try to load a foto that is 1381 x 1961 pixels 24bpp. Gimp says:
Image resolution is out of bounds, using the default resolution instead.
Then it loads it anyway. It *seems* to be OK, but have I lost quality?
No. It's just a warning that the image resolution is too high to display
on your screen. The Gimp is not having any trouble with the image
resolution, nor is it changing it (unless you actually tell it to).
(I *never* save back over the original file.)
When Gimp scales an image, it gives the options None (fastest), Linear,
and Cubic (best) Interpolation. Is this the best available?
What is the best way to scale an image to retain the best quality?
I have experimented with scaling in The Gimp because I was not sure if
the different settings really made a noticeable difference. I found that
Cubic is indeed the best. For example, I found that scaling things such
as logos containing text for the company I work for are best done using
the Cubic option. It does the best job at anti-aliasing curved lines and
blending colors.
One more note. I always save files in The Gimp format (.xcf). When I
want a final image to post on a web site, put on a CD, etc. I then
export into the format I want. By saving the "master" file in The Gimp
format, I'm sure I lose nothing do to compression, I keep all layers
intact (I often use layers when I modify images), and have a format I'm
sure The Gimp can handle whenever I open the file again.
PGA
--
Paul G. Allen
Owner, Sr. Engineer
Random Logic Consulting Services
www.randomlogic.com
--
[email protected]
http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-newbie
