Abstract
Abstract This paper describes the advantages and disadvantages of inertial sensors and stationary camera-based measuring methods for the application of detecting head and shoulder angles. For this purpose three inertial sensor modules from Shimmer Sensing and a Kinect 2 camera system are used. The recorded data of both systems are converted into a comparable form. Based on an evaluation of the recorded measurement data, the inertial sensor and the camera-based methods are compared with regard to their suitability for detecting movements in the head and shoulder area.
Highlights
This paper describes the advantages and disadvantages of inertial sensors and stationary camera-based measuring methods for the application of detecting head and shoulder angles
For the measurement of the head angle one Shimmer 3 ExG inertial sensor is mounted at the head with a strap
For the measurement of the vertical and horizontal shoulder angle three Shimmer 3 ExG inertial sensors are mounted with straps on the body
Summary
Each movement type describes a rotation around one of three movement axis. This consists a jaw-, pitch- and roll rotation of the head. For the measurement of the head angle one Shimmer 3 ExG inertial sensor is mounted at the head with a strap. The orientation data of the inertial sensor needs to be calibrated first to measure proper head rotation angles the quaternion data of the inertial sensor is multiplied with the unit quaternion. The result of this multiplication can be used to calculate the rotation value on all three axis [2].
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