On 03/06/18 15:46, WMusc wrote:
I am brand new to GIMP and am trying to statistically match 2 picture sets on
brightness, contrast, and luminosity for a psychology research study. I've done
a ton of online searching and figured out how to find values for brightness and
contrast. Using the histogram, I used the mean of the "Value" channel to
determine each picture's brightness, and the standard deviation of the "RGB"
channel to identify contrast.
However, I am at a standstill for extracting values for each image's luminosity.
Please let me know if you're aware of how I may go about this. I know spatial
frequency can be used, but am unable to locate the value for each image in GIMP.
Color>Desaturate (luminosity) and check the average or median in the
gimp-user-list mailing list
List address: firstname.lastname@example.org
List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
List archives: https://mail.gnome.org/archives/gimp-user-list