3D human mesh reconstruction 3D human pose estimation 3D multi-person pose estimation Azure Kinect BILSTM Berg Balance Scale COVID-19 EMG F-Formation FFNN FMCW GRU History of engineering & technology Kinect v2 LSTM MFCC RGB-D sensors Technology: general issues XGBoost Zed 2i absolute poses action units aggregation function anomaly detection artifact classification artifact detection artificial intelligence assessment balance biometrics