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Table 3 Recognition rates (%) for person-independent facial expression recognition. The best recognition rates are highlighted in bold

From: Non-frontal facial expression recognition based on salient facial patches

Head pose HOG LBP Gabor
90° 81.67 81.67 81.25
45° 95.00 91.25 92.50
97.92 98.75 98.75
− 45° 88.33 89.17 92.08
− 90° 82.50 86.25 87.08