Skin Detection and Tracking for Camera-Based Photoplethysmography Using a Bayesian Classifier and Level Set Segmentation. - Trumpp, Alexander; Rasche, Stefan; Wedekind, Daniel; Schmidt, Martin; Waldow, Thomas; Gaetjen, Frederik; Plötze, Katrin; Malberg, Hagen; Matschke, Klaus; Zaunseder, Sebastian (2017)