2.1.1. Public database UBFC-RPPG

Public database UBFC-RPPG provides 50 video data collected using Webcam (Logitech C920 HD pro) and the PPG (pulse rate and SpO2) information measured by the transmissive pulse oximeter CMS50E. The distance between the participant and the camera was about 1 m, and the videos were recorded with a frame rate of 30 fps and a resolution of 640×480. Data collection was performed in the different places, and the ambient light was used as a source of illumination. The participants’ skin colors are different, and among them there were some bearded men and also some people wearing glasses. This database consists of two datasets. Eight videos are included in the first dataset. During the recording, the participants maintained a static state, one of whom performed an exercise before the measurement experiment, whereas the other participants did not perform an exercise. The second dataset contains 42 videos. In this dataset, participants were supposed to play the mathematical games during the measurement in order to simulate the realistic situations such as the interaction between human and computer.