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. 2021 Nov 5;21(21):7367. doi: 10.3390/s21217367

Figure 6.

Figure 6

Proposed system structure [15]. (a) Extracting frames from video; (b) Face detection using MTCNN from each frames; (c) Crop detected faces; (d) Feature extraction from cropped faces; (e) Collecting extracted features; (f) Calculate variance from data; (g) Using neural network with data; (h) Classification from neural network.