What kind of features are extracted by CNN from a face image?

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Unqua Laraib
Unqua Laraib 2021-5-23
I'm performing Facial emotion recognition using CNN. Im using CNN for feature extraction only and using SVM for classification. My actual question is what kind/type of features are extracted from face images by the CNN. i have used pool5 layer for feature extraction.
although it's just a very huge matrix of numbers but im curious what these numbers means and what are these features

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