Modifying Kinect placement to improve upper limb joint angle measurement accuracy

Abstract

Study Design Repeated measures. Introduction The Kinect (Microsoft, Redmond, WA) is widely used for telerehabilitation applications including rehabilitation games and assessment. Purpose of the Study To determine effects of the Kinect location relative to a person on measurement accuracy of upper limb joint angles. Methods Kinect error was computed as difference in the upper limb joint range of motion (ROM) during target reaching motion, from the Kinect vs 3D Investigator Motion Capture System (NDI, Waterloo, Ontario, Canada), and compared across 9 Kinect locations. Results The ROM error was the least when the Kinect was elevated 45° in front of the subject, tilted toward the subject. This e..