12-06-2025, 10:23 PM
(12-02-2025, 08:57 PM)Ofnuts Wrote: For me definition of "average" is whatever Gimp picks when you use the color picker with the Sample average option. On a B&W checkerboard, Gimp 2.8 picks #808080, and Gimp 2.10/Gimp 3.x pics #bcbcbc.
The acid test is to paint over the area using the picked color, normally it should hardly be visible.
I found out that the Chuck Henrich 2025 average-image-colour-v3.py plugin gives an incorrect result because:
In the helpers/get_average_color file, it counts the average in sRGB space by gamma:
r, g, b = get_average_rgb(drawable) ie.
The average of the values after the gamma curve (and non-linear).
Only then does it convert this already bad average to linear: r_lin = srgb_byte_to_linear_component®
As far as I know, DO NOT count the average on sRGB data (after gamma).
Is this true, because the results are always darker.