[INFO] The threshold selection of face verification

[joyhuang9473]

reference: happynear/FaceVerification

how much is the best threshold for face authentication.

Three probably answers:

1. You can use a linear svm to calculate the threshold.
2. The threshold is determined by 10-fold validation. Using 5400 pair samples for training and 600 pair test, then recycled. L2 and cosine are used to determine the threshold.
3. I used all training data(944612 images) to train a joint bayesian classifier, then using all 6000 pair samples for testing.