Install aaphoto by entering the following commands in the terminal:
sudo apt update sudo apt install aaphoto
Description:
Auto Adjust Photo, automatic color correction of photos
Auto Adjust Photo is a tiny command-line image manipulation tool for automatic color correction of photos. It tries to make the picture look better. The program does this by analyzing the input image and then sets the most optimal contrast, gamma, color balance and saturation for it.
Homepage: http://log69.com/aaphoto_en.html
Version: 0.45-1
Section: universe/graphics