Someone has updated Whitebalance script for 2.10?

yoggysot · **Posted:** Mon Jul 23, 2018 5:29 pm **(#1)**

I upgrade from 2.8.22 to 2.10.4. Apart from several problems due to different versions of the same DLL required by some plugin, I noticed that the script Whitebalance.scm by Luca de Alfaro stopped working ("Error while executing script-fu-whitebalance: Error: eval: unbound variable: RED-LUT")

The last update on the developer page was on 2009, with the version for GIMP 2.6 (that work also in 2.8) http://luca.dealfaro.org/photography/Whitebalance so I imagine that the development of the script is stopped.

Someone has updated it to work for 2.10?

dinasset · **Posted:** Mon Jul 23, 2018 11:21 pm **(#2)**

the definition of the colors have been changed, from xxx-LUT to HISTOGRAM-xxx.
Hence you have to change lines 139-141 to say:

Code: Select all

    (gimp-curves-explicit drawable HISTOGRAM-RED   num_bytes red-curve  )
    (gimp-curves-explicit drawable HISTOGRAM-GREEN num_bytes green-curve)
    (gimp-curves-explicit drawable HISTOGRAM-BLUE  num_bytes blue-curve )

If you feel uncomfortable in doing this yourself, here the updated version

Attachment:

whitebalance_upd.7z [2.2 KiB]
Downloaded 271 times

ofnuts · **Joined:** Oct 25, 2010 **Posts:** 4812

This script is possibly less useful in 2.10 (or can at least be greatly simplified) since a good deal of it is concerned about working in linear space, when this is a given in Gimp 2.10 (in additions these corrections are best done in a high-precision image).

yoggysot · **Posted:** Tue Jul 24, 2018 9:17 pm **(#4)**

Thank you!
Sometimes I try to do the white balance correction through the curves, but with this script things were faster when I do not need much precision.

I will keep in mind the new definition of the colors xxx-LUT --> HISTOGRAM-xxx if I were having similar problems with other scripts.

dinasset · **Posted:** Tue Aug 21, 2018 12:04 am **(#5)**

Even if this function -as Ofnuts pointed out- is less useful in Gimp 2.10, I updated also my personal filter.
Here it is:

Attachment:

DIEGO_ENHANCE_WhiteBalanceStretch210.7z [4.91 KiB]
Downloaded 244 times

A test:
original

Attachment:

18-dickey-chapelle Original.jpg [ 199.13 KiB | Viewed 4312 times ]

After the application of the filter (moderate option, no post-process)

Attachment:

2018-08-21 06-55-29, 18-dickey-chapelle, auto colours balanced (moderate).jpg [ 228.55 KiB | Viewed 4312 times ]

dinasset · **Posted:** Tue Aug 21, 2018 1:48 pm **(#6)**

Please:
those who have downloaded the plug-in (8 so far) can run it and post samples/comments?
Thanks.

Pat625 · **Joined:** May 12, 2015 **Posts:** 4693

Attachment:

Diego White Balance Stretch 2.10.6.gif [ 465.12 KiB | Viewed 4219 times ]

dinasset · **Posted:** Sat Aug 25, 2018 12:58 am **(#8)**

Thanks Pat for your try. (It seems to work properly)

Issabella · **Posted:** Sat Aug 25, 2018 1:27 am **(#9)**

Your filter works great, Dinasset. :clap

dinasset · **Posted:** Sat Aug 25, 2018 4:02 am **(#10)**

Thanks Isabella, for your try.

(I guess that -at the end- we will always rely only on Issabella and Pat625; all the other downloaders -now 13- can be considered "USV": unidentified silent visitors…)

Issabella · **Posted:** Sun Aug 26, 2018 5:34 am **(#11)**

Here two more tests using this great filter, Dinasset. :tyspin

Issabella · **Posted:** Sun Aug 26, 2018 5:34 am **(#12)**