Huihua Wu, Hansong Su, Gaohua Liu, Shen Li, Xiao Su. Facial Expression Recognition Algorithm Based on Cosine Distance Loss Function[J]. Laser & Optoelectronics Progress, 2019, 56(24): 241502
- Laser & Optoelectronics Progress
- Vol. 56, Issue 24, 241502 (2019)
Fig. 1. Schematic of mini-Xception network structure
Fig. 2. Depth feature diagrams learned by three loss functions. (a) Softmax loss; (b) Center loss; (c) Island loss
Fig. 3. Comparison of traditional Softmax loss function and AM-Softmax loss function
Fig. 4. Shematic of classification boundaries of Island loss function and loss function based on cosine distance
Fig. 5. Confusion matrix of experimental results of network model based on cosine distance loss function
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Table 1. Accuracy of facial expression recognition when s =10 and m takes different values
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Table 2. Accuracy of facial expression recognition when m =0.35 and s takes different values
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Table 3. Accuracy of facial expression recognition under different loss functions
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