3D Face --> The Test Procedure

In order to evaluate the effectiveness of a surface space, we project and compare each facial surface with every other surface in the test set, no surface is compared with itself and each pair is compared only once. The false acceptance rate (FAR) and false rejection rate (FRR) are then calculated as the percentage of incorrect acceptances and incorrect rejections after applying a threshold. By varying the threshold, we produce a series of FAR FRR pairs, which plotted on a graph produce an error curve as seen in Figure 8. The equal error rate (EER, the point at which FAR equals FRR) can then be
taken as a single comparative value.