  In this paper we are proposing the use of GIMP Retinex, a filter of the GNU
Image Manipulation Program, for enhancing foggy images. This filter involves
adjusting four different parameters to find the output image which has to be
preferred according to some specific purposes. Aiming to obtain a processing,
which is able of choosing automatically the best image from a given set, we are
proposing a method for the generation a bulk set of GIMP Retinex filtered
images and a preliminary approach for selecting and ranking them.
