View Full Version : Gimp 2.9.1 available for fedora 21 via copr

25th February 2015, 02:45 AM
Saw this linked on facebook.


"New GIMP 2.9.1 master builds available for Fedora"

25th February 2015, 11:45 AM
COPR version has 64bit float point precision for image processing.

25th February 2015, 02:40 PM
sounds good. however, what are the specific benefits of 64-bit float point precision with regards image editing though? because there is very little in CAD (http://autodesk.blogs.com/between_the_lines/2004/01/the_64bit_cad_m.html).

the older Fedora repo version seemingly works fine 'as is' for me and my simple demands of GIMP. I'm not processing loads of hi-res images though.

25th February 2015, 03:31 PM
Looks exiting but I can't find a good feature list for 3.10.
This (http://www.gimpusers.com/tutorials/whats-new-in-gimp-2-10) ended up on top of my web search, is very detailed and touches a lot of different features but is unfortunately from late 2012.
The GIMP roadmap (http://wiki.gimp.org/index.php/Roadmap) is more up to date but also harder to grasp.

25th February 2015, 08:14 PM
sounds good. however, what are the specific benefits of 64-bit float point precision with regards image editing though?

Very useful in astronomy world.

26th February 2015, 06:15 AM
When you apply various image processing filters then you get rounding errors. These can accumulate a lot when multiple filters are applied. 64bit floating point precision means that the results of stacking filters like that are far more accurate.

26th February 2015, 04:23 PM
Thanks alphacrucis. That makes sense now. So sharper processing at greater image depth and less blurring hence the astronomy benefits.

11th November 2015, 11:18 PM
that's nice il will try gimp ;) (http://tecnogers.altervista.org)

2nd December 2015, 12:37 AM
Gimp have recently announced dev release 2.9.2.


As far as I know, there is no fedora copr for it yet.

5th January 2016, 07:56 PM
I too was hoping to get GIMP 2.9.* in the hope they have a Color>Components>Decompose selection for Lch (if that is even still the menu selection and/or a category anymore.).

HSV color space, while having a certain intuative side to it, is actually not very good. The Lch color space based off LAB is far better in the way it matches to the Munsell notions (strong useful notions of color). If decomposition is still allowed in 2.9, and one can decompose along the lines of “c” in Lch mode, then this is a very much wanted feature by me. Does anyone know if 2.9 does that??

Also, is it safe to still get the 2.9.1 build listed above – will it work, within reason, on Fedora 23 or is it probably best to avoid it for now?

5th January 2016, 11:43 PM
The maintainer of Gimp in Fedora repository packaged 2.9.2 last month.

6th January 2016, 12:04 AM
Thank you - I hope....

9th January 2016, 10:14 PM
I'm looking forward to being able to work directly with 16-bit (per channel) FITSs and TIFFs and that high precision engine. I'm mostly interested as I do some astrophotography.