This is a comparison of several metrics for predicting visibility of differences between two images (discrimination). The table below lists prediction errors for a set of metrics (rows) and test sets (columns). The prediction error is given as:
The Speak value is the peak sensitivity parameter of the metric used to fit the data. Note that this parameter is specific to each metric and only the differences between the test-sets fitted with the same metric are relevant.
Click on the name of the data set to see more information and the gallery of all stimuli
| ModelFest | CSF lum. range | Blackwell's t.v.i. | Glare at scotopic lum. | Foley's masking data | CSF flattening | Complex images | Rovamo spatial integration | Psychophysical func. | |
| VDP'93 | R=4.3 dB chi2red=1.4 Speak=5.6 see details | R=17 dB chi2red=47 Speak=4.6 see details | R=28 dB Speak=3.6 see details | R=15 dB chi2red=2.2 Speak=4.5 see details | R=7.7 dB Speak=5.3 see details | R=3.9 dB chi2red=5.8 Speak=4.8 see details | R=6.2 dB chi2red=3.8 Speak=5 see details | R=7.6 dB Speak=6 see details | R=0.54 dB Speak=5.4 see details |
| HDR-VDP CPP 1.7 | R=3.3 dB chi2red=0.75 Speak=2.4 see details | R=12 dB chi2red=22 Speak=3.1 see details | R=41 dB Speak=5.4 see details | R=2.7 dB chi2red=0.071 Speak=2.1 see details | R=7.1 dB Speak=2 see details | R=6 dB chi2red=13 Speak=2 see details | R=13 dB chi2red=16 Speak=2.5 see details | R=9.6 dB Speak=3.1 see details | R=0.099 dB Speak=2.4 see details |
| HDR-VDP-2.0 | R=2.8 dB chi2red=0.61 Speak=2.5 see details | R=2.8 dB chi2red=1.2 Speak=2.4 see details | R=3.6 dB Speak=2.5 see details | R=1.3 dB chi2red=0.017 Speak=2.7 see details | R=2 dB Speak=2.1 see details | R=2.4 dB chi2red=2.1 Speak=2.8 see details | R=5 dB chi2red=2.5 Speak=2.4 see details | R=4.7 dB Speak=2.8 see details | R=0.53 dB Speak=2.5 see details |
| HDR-VDP-2.1 | R=2.4 dB chi2red=0.42 Speak=2.5 see details | R=1.3 dB chi2red=0.25 Speak=2.4 see details | R=2.6 dB Speak=2.4 see details | R=2.1 dB chi2red=0.045 Speak=2.6 see details | R=2.1 dB Speak=2.1 see details | R=2.4 dB chi2red=2.1 Speak=2.7 see details | R=4.8 dB chi2red=2.3 Speak=2.4 see details | R=4 dB Speak=2.8 see details | R=0.6 dB Speak=2.4 see details |