PPG Signal Extraction
PPG signal Extraction Used Matlab to extract the RPG matrix for a single frame from a 720p video file with a duration of 10 to 15 seconds. The RPG matrix was converted into gray-scale single value matrix to simplify the calculation. The dimension of the gray-scale matrix was changed to focus on the area of interest to increase the computation time of the program. The gray-scale signal was extracted from the video and was studies in the frequency domain. An IIR filter was applied to the single to extract the PPG signal. ...