EnhancePPG: Improving PPG-based Heart Rate Estimation with Self-Supervision and Augmentation. - Luca Benfenati; Sofia Belloni; Alessio Burrello; Panagiotis Kasnesis; Xiaying Wang; Luca Benini; Massimo Poncino; Enrico Macii; Daniele Jahier Pagliari (CoRR, 2024)