success 72090 HDR Visual Difference Predictor 2008-12-19T12:07:11Z 2009-08-25T22:35:51Z High Dynamic Range Visual Difference Predictor (HDR VDP) is a perceptual metric that can predict whether differences between two images are visible to the human observer or not. http://hdrvdp.sourceforge.net hdrvdp 0 0 gpl2_or_later GNU General Public License 2.0 or later