Fig. 12
From: Spatio-temporal and -spectral feature maps in photoplethysmography imaging and infrared thermography
Video of a baby in a thermal bed w/o (top) and w/ movement (bottom): mean intensity mapping of 10-s segments. In the segment w/ movement, motion blur reduces all details in the face. The ROIs marked for evaluation were manually chosen and correspond to the background (\(ROI_\text {BG}\); blue) and to a region that was expected to show pulsatility (\(ROI_\text {PULSE}\); red). The regions selected are different for the three cameras to account for the different fields of view and disturbances detected in the video streams (i.e., shadows cast, reflections)