Fig. 1From: Camera-based photoplethysmography in an intraoperative settingCbPPG setup during surgery. (1) Construction with adjustable arm for the sensing system. (2) Sensing system (enlarged on the right) including NIR illumination, NIR camera, and RGB camera. (3) Recording PC. (4) Patient (face directed towards the cameras). (5) Surgeons and clinical staffBack to article page