Table 2. Rank-1 recognition rate (%) performance comparison between the baseline FNM and the proposed Multi-Image FNM across varying pose angles.

−15°+15° −30°+30° −45°+45° −60°+60° −75°+75° −90°+90°
FNM (1-view) 97.47 96.17 94.48 89.02 78.91 68.56
Multi-Image FNM (maxpooling) 98.23 98.12 97.30 94.53 86.45 76.73
Multi-Image FNM (avgpooling) 98.12 97.77 96.97 94.03 85.78 75.62