Similarly, use the other pre-trained model to predict the emotion in a face in a given image (use the face detector function to detect the faces first). You should get an output like this if you draw the predicted emotions of Charlie Chaplin's face:
You may want to download the five celebrities' datasets from https://www.kaggle.com/dansbecker/5-celebrity-faces-dataset and try different face images for emotion, gender, and age recognition.
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