Device Attitude and Real-Time 3D Visualization: An Interface for Elderly Care

This paper proposes an innovative graphical user interface to visualize the attitude of a sensing device in a threedimensional space, serving a wide-range of medical applications. Based on inertial measurement units (IMU) or on Magnetic, Angular Rate and Gravity sensors (MARG), the proposed tool estimates Euler angles using a predefined attitude filter to display the orientation of the device relative to the Earth frame in real-time. The device is schematized by linking six polygonal regions, and is subject to sequential rotations by updating the graph each 350 ms. Two public datasets were used to demonstrate the value of this contribution in fall risk assessment and body posture monitoring for elderly care.