The validity of the first and second generation Microsoft Kinect™ for identifying joint center locations during static postures

Applied Ergonomics
Xu Xu, Raymond W McGorry

Abstract

The Kinect™ sensor released by Microsoft is a low-cost, portable, and marker-less motion tracking system for the video game industry. Since the first generation Kinect sensor was released in 2010, many studies have been conducted to examine the validity of this sensor when used to measure body movement in different research areas. In 2014, Microsoft released the computer-used second generation Kinect sensor with a better resolution for the depth sensor. However, very few studies have performed a direct comparison between all the Kinect sensor-identified joint center locations and their corresponding motion tracking system-identified counterparts, the result of which may provide some insight into the error of the Kinect-identified segment length, joint angles, as well as the feasibility of adapting inverse dynamics to Kinect-identified joint centers. The purpose of the current study is to first propose a method to align the coordinate system of the Kinect sensor with respect to the global coordinate system of a motion tracking system, and then to examine the accuracy of the Kinect sensor-identified coordinates of joint locations during 8 standing and 8 sitting postures of daily activities. The results indicate the proposed align...Continue Reading

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Citations

Sep 8, 2016·International Journal of Occupational Safety and Ergonomics : JOSE·Teimour AllahyariHamid-Reza Khalkhali
Nov 9, 2016·Applied Ergonomics·Pierre PlantardFranck Multon
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Aug 31, 2021·Topics in Spinal Cord Injury Rehabilitation·Lin WeiAlicia M Koontz
May 30, 2020··Jui-Sheng HungChien-Chi Chang

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