%0 Journal Article %T A machine learning approach to improve contactless heart rate monitoring using a webcam. %A Monkaresi, Hamed %A Calvo, Rafael A %A Yan, Hong %J IEEE journal of biomedical and health informatics %V 18 %N 4 %P 1153-60 %@ 2168-2194 %D 2015-04-08 %~ DeepDyve