I use GIMP all the time, being of sound Linux mind ;). And the Lanczos setting for image resizes. Try the Unsharp Mask filter: Filters > Enhance > Unsharp Mask. You might like the results. Thanks for the images, now just need to start rendering them at full Fractint max size, downsample to 25%, and print posters! On 05/23/2016 04:33 PM, Harold Lane wrote:
The late Paul N. Lee suggested I try the image processing program GIMP. I had not tried GIMP until my anti-aliasing results in Photoshop (using their best down-sampling algorithm -- "Bi-cubic sharper") on this Win 8.1 computer came out poorer quality than the Lanczos algorithm used in my not-supported (on Win 8.1) image processing program I had used on my Win-XP computer: "CompuPic".
GIMP *has* the Lanczos algorithm, and I have used it on this set of my investigations of Jim's FOTX -- May 22, 2016 image. I followed the Lanczos down-sampling with a small amount of sharpening to attempt to remove some of the "softness" of edges created by that algorithm.
I like the results much better.
I'm not yet familiar with GIMP and inadvertently left the default "Progressive" checkbox checked, so the JPG images appear in three "waves" of increasing resolution. I'll try and remember to uncheck that box for the next set of images.
-- David W. Jones gnome@hawaii.rr.com authenticity, honesty, community http://dancingtreefrog.com