ROC and DET plots have wrong axis
Created by: siebenkopf
I always found the way, ROC and DET plots are plotted using
bob.measure.plot.det, wrong. For some reason, someone has decided to plot the FRR axis in the abscissa and the FAR in the ordinate. I have never seen plots like this before, and also the "Handbook of Biometrics" shows ROC and DET plots with the FAR in the abscissa (page 9). Also wikipedia pages show DET and ROC plots this way.
Normally, I would not consider the way the ROC is plotted as a bug. But in fact, I was using the function
bob.measure.det, and I blindly expected getting FAR and FRR in this order. Unfortunately, this was not the case, which lead my plots to be reverted (FAR was FRR and vice versa).
To be conform with the god of Biometrics, we should change both:
- the axis of the ROC / DET plots
- the order in which
bob.measure.detreturn the results.