Figure 1
From: Real-time realizable mobile imaging photoplethysmography

Overview of the proposed system for HR estimation using a PPGI mounted on a robot; (a) Robotic device based on a turtlebot2 framework with a 3D camera, a laptop and a webcam; (b) SLAM and navigation; (c) Real-time HR estimation via face detection, face skin image extraction, PPGI acquisition; (d) Algorithm flow chart for SLAM and navigation.