[APML] Scaling Images (was: Cocoon Nebula)

[Matt BenDaniel <matt@starmatt.com>]

At 06:16 PM 11/6/2001 +0100, Mikkel Steine wrote:
>...I know from my days in desktop
>publishing that Photoshop is not always the preferred tool for scaling images.
>There are numerous techniques for resampling an image, and it would be fun to
>try out some of them...

Mikkel,

I downloaded the free evaluation version of Genuine Fractals. Using GF I scaled the image down to the exact same size (703x640) as my PS JPG and uploaded it to my web site:

http://people.ne.mediaone.net/mbendaniel1/gallery/astro/cocoon.html

You can toggle to the PS scaled by moving mouse over image.

The pixels patterns resulting from GF are slightly different than Photoshop bicubic. The GF stars are sharper and less smeared. The JPG size of the GF image is larger, which may be an indication that GF preserves more information from the original image.

It is very curious how the image annoyingly shifts around when you toggle between the two. Could PS or GF be screwing up its scaling?
--
Matt BenDaniel
http://starmatt.com


--  APML Archives at <http://astro.umsystem.edu/apml/>  ---
             Unsubscribe at <majordomo@seds.org>