(06-10-2022, 05:11 AM)PixLab Wrote: If all in layers, I would use Filters ➤ G'MIC ➤ Colors ➤ Auto balance(there are other filters in G'MIC), then as "Input Layer" ➤ All, then use one of the Ofnut's script to export each layer as image

Quote: I expect performing bulk/batch editing a group of negative-images (say for example 40 negative-images) running following commands on GIMP
Colors -> Auto -> White Balance
and then
Colors -> Linear Invert

A folk on another thread advised me to do it through layer;
1. Create a new layer
2. Copy 40 negative-images on new layer
3. Perform editing one negative-image, then the rest negative-images would be automatically edited simultaneously.

(06-12-2022, 06:59 AM)sallyanne Wrote: Sorry to mislead you, you cannot use any of the colour menu items that you need once they are in a group.

Quote:Is there anyway to run batch process on GIMP alone, without plugin, such as BIMP, G'MIC etc ?

(06-12-2022, 12:50 PM)rich2005 Wrote:

Quote:Is there anyway to run batch process on GIMP alone, without plugin, such as BIMP, G'MIC etc ?

Of course it is possible.

You have already referenced https://www.gimp.org/tutorials/Basic_Batch/ more that once. That is using script-fu to create a script. An alternative is you to create a python plugin and this method comes originally from an Ofnuts post. https://ntcore.com/?p=509

The bottom line. Can you write either script-fu or python ?

You can't ? then use BIMP and G'mic

(06-12-2022, 06:20 PM)rich2005 Wrote: You have quoted this https://www.gimp.org/tutorials/Basic_Batch/  four  times Have you actually studied it ? It will not make you a scripting wizard but might get you started. Use it as a template.



...and you can get a simple script-fu

Code:

  (define (photonegative pattern)
  
  (let* ((filelist (cadr (file-glob pattern 1))))
    (while (not (null? filelist))
           (let* ((filename (car filelist))
                  (image (car (gimp-file-load RUN-NONINTERACTIVE filename filename)))
                  (drawable (car (gimp-image-get-active-layer image))))

             (gimp-drawable-levels-stretch drawable)
             (gimp-drawable-invert drawable TRUE)
             
             (gimp-file-save RUN-NONINTERACTIVE image drawable filename filename)
             (gimp-image-delete image))
           (set! filelist (cdr filelist)))))

           

Can you see the similarities ? One gimp procedure replaced by the two you require.

The information on using it is there as well. It tells you to run a command in the folder containing the images.
In a terminal

Code:

gimp -i -b '(photonegative  "*.jpeg" )' -b '(gimp-quit 0)'

...and that will apply the auto white balance and the invert-linear

example: https://i.imgur.com/TxXVJUs.mp4

...but if you want to do more than that, color corrections, then the commands you want are GEGL and not (easily) scriptable

Do not want to use BIMP ? I can have your 999 negatives processed before you have finished copying the script into your Gimp scripts folder.