Francesc Tous María Vanrell 0001 Ramon Baldrich Relaxed Grey-World: Computational Colour Constancy by Surface Matching. 192-199 2005 conf/ibpria/2005-1 IbPRIA (1) https://doi.org/10.1007/11492429_24 db/conf/ibpria/ibpria2005-1.html#TousVB05