======  Retinex algorithm ======

**An automatic method for image enhancement.**

Background information and quite impressive examples can be found here:
http://dragon.larc.nasa.gov/retinex/retinex.html

See the [[http://www.dentistry.bham.ac.uk/landinig/software/retinex/retinex.html|ImageJ plugin]] written by Francisco Jiménez Hernández based on the GIMP's Retinex filter.