Hi, 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. Thanks! Will -- WMusc (via www.gimpusers.com/forums) _______________________________________________ gimp-user-list mailing list List address: [email protected] List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list List archives: https://mail.gnome.org/archives/gimp-user-list
