A Novel Zernike Moment-Based Real-Time Head Pose and Gaze Estimation Framework for Accuracy-Sensitive Applications. - Hima Deepthi Vankayalapati; Swarna Kuchibhotla; Mohan Sai Kumar Chadalavada; Shashi Kant Dargar; Koteswara Rao Anne; Kyandoghere Kyamakya (Sensors, 2022)