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Lightweight Facial Expression Recognition Model and Its Application on Mobile Based on Global Average Pooling ZHANG Dongxiao 1张东晓(1980-),男,副教授,硕导,主要研究方向:视频与图像处理、机器学习 CHEN Yanxiang 1 1、Science School, Jimei University, Xiamen 361021Abstract:A shallow convolution neural network is constructed for the expression recognition of mobile terminal. Three groups of stacked convolution layers help to enlarge the receptive field and facilitate feature extraction; The global average pooling layer, which substitutes for additional full connection layer, greatly reduces the amount of parameters. After training model in the FER-2013, the accuracy rate on the test set can reach 0.7; After freezing the other layers except the average pooling, Fine-tuning on the CK + data set make the accuracy rate on the test set reach 0.96. The model is transformed into the core ML model, and a real-time App about expression recognition is established on the iOS with Xcode platform. It can run stably and smoothly on the iPhone 8 plus, and the effect reaches the expectation. Keywords: Artificial Intelligence Facial Expression Recognition CNN Global Average Pooling Google Colab Core ML |
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