Normalize

[gimp-artist]

I'm testing automated tools. This function is in the "colors>auto>normalize". I tried this function to many photos. I don't see any difference in any of pictures I tried. Where should I focus on when I utilize this normalize automatic photo enhancement function?

[dinasset]

The Normalize command scales the brightness values of the active layer so that the darkest point becomes black and the brightest point becomes as bright as possible, without altering its hue. This is often a “magic fix” for images that are dim or washed out. “Normalize” works on layers from RGB, Grayscale, and Indexed images.
If your images have already one black point and one white point, normalize does nothing.
To double-check: look at the histogram of your picture: if RGB values have already a 0 value and a 255 value, no use for normalize.