Emotion

https://towardsdatascience.com/face-detection-recognition-and-emotion-detection-in-8-lines-of-code-b2ce32d4d5de

emotion model

https://github.com/priya-dwivedi/face_and_emotion_detection/blob/master/emotion_detector_models/model_v6_23.hdf5

Head pose estimation

https://www.learnopencv.com/head-pose-estimation-using-opencv-and-dlib/