Robust facial expression recognition system in higher poses
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Date
2022
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Visual Computing for Industry, Biomedicine, and Art
Abstract
Facial expression recognition (FER) has numerous applications in computer security, neuroscience, psychology, and
engineering. Owing to its non-intrusiveness, it is considered a useful technology for combating crime. However, FER
is plagued with several challenges, the most serious of which is its poor prediction accuracy in severe head poses.
The aim of this study, therefore, is to improve recognition accuracy in severe head poses by proposing a robust
3D head-tracking algorithm based on an ellipsoidal model, advanced ensemble of AdaBoost, and saturated vector
machine (SVM). The FER features are tracked from one frame to the next using the ellipsoidal tracking model, and the
Visible, expressive facial key points are extracted using Gabor filters. The ensemble algorithm (Ada-AdaSVM) is then
used for feature selection and classification. The proposed technique is evaluated using the Bosphorus, BU-3DFE, MMI,
CK+ and BP4D-Spontaneous facial expression databases. The overall performance is outstanding.
Description
Research Article
Keywords
Facial expressions, Three-dimensional head pose, Ellipsoidal model