Do you know HDR photography techniques? It means High Dynmamic Range, and works to create a photo by joining various images taken with different exposures. This is the technique used, for example, to avoid different zones in the same image having different lighting.
Well, Qtpfsgui is a program that, in addition to opting for the most difficult name to pronounce, helps you add/join these images with different exposures, using this HDR technique. You can also process them using various configurable maps: Fattal, Ashikmin, Durand, Drago, Pattanaik, Reinhard`02 and Reinhard`04.