Evaluation of motion tracking methods for therapeutic assistance in everyday living environments

摘要

In this paper we compare the performance of the MicrosoftTM Kinect v2 with a high precision measurement system for therapeutic purposes. A precise and low cost motion tracking system is of importance for the development of therapeutic assistance in everyday living environments. Upcoming therapeutic assistance systems have to be affordable and able to analyze the motion of the inhabitant. Therefore, an evaluation of the low cost Kinect v2 sensor is necessary to examine the usability of the sensor for joint angle measurements. We will show that a median deviation up to 8.4° in comparison with the high precision measurement may be achieved. We will conclude that the Kinect v2 sensor offers an adequate opportunity to analyze therapeutic exercises in living environments.