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Data-specific Adaptive Threshold for Face Recognition and Authentication
Hsin-Rung Chou; Jia-Hong Lee; Yi-Ming Chan; Chu-Song Chen

Abstract
Many face recognition systems boost the performance using deep learning models, but only a few researches go into the mechanisms for dealing with online registration. Although we can obtain discriminative facial features through the state-of-the-art deep model training, how to decide the best threshold for practical use remains a challenge. We develop a technique of adaptive threshold mechanism to improve the recognition accuracy. We also design a face recognition system along with the registering procedure to handle online registration. Furthermore, we introduce a new evaluation protocol to better evaluate the performance of an algorithm for real-world scenarios. Under our proposed protocol, our method can achieve a 22\% accuracy improvement on the LFW dataset.
Code Repositories
Benchmarks
| Benchmark | Methodology | Metrics |
|---|---|---|
| face-recognition-on-adience-online-open-set | FaceNet+Fixed Threshold (0.2487) | Average Accuracy (10 times): 80.6 |
| face-recognition-on-adience-online-open-set | FaceNet+Adaptive Threshold | Average Accuracy (10 times): 84.3 |
| face-recognition-on-color-feret-online-open | FaceNet+Adaptive Threshold | Average Accuracy (10 times): 83.79 |
| face-recognition-on-color-feret-online-open | FaceNet+Fixed Threshold (0.3968) | Average Accuracy (10 times): 80.72 |
| face-recognition-on-lfw-online-open-set | FaceNet+Fixed Threshold (0.3779) | Average Accuracy (10 times): 53.97 |
| face-recognition-on-lfw-online-open-set | FaceNet+Adaptive Threshold | Average Accuracy (10 times): 76.46 |
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