Comparative study of the two versions of the Microsoft Kinect$^{\rm TM}$ sensor in regard to the analysis of human motion

TL;DR

This study compares two versions of the Microsoft Kinect sensor for human motion analysis, highlighting differences in their outputs and emphasizing the need for validation of the upgraded sensor for precise applications.

Contribution

It provides a critical comparison of Kinect sensor versions, revealing output differences and advocating for validation of the newer sensor in high-precision contexts.

Findings

The two Kinect versions produce differing outputs for physical quantities.

The original Kinect sensor is unsuitable for high-precision applications.

The upgraded sensor requires validation against marker-based systems.

Abstract

The present paper is part of a broader programme, exploring the possibility of involving the Microsoft Kinect$^{\rm TM}$ sensor in the analysis of human motion. In this study, the output obtained from the two available versions of this sensor is critically examined. We demonstrate that the two outputs differ in regard to the variation of the physical quantities involved in the modelling of the human motion. As the original sensor has been found unsuitable for applications requiring high precision, the observed differences in the output of the two sensors call for the validation of the upgraded sensor on the basis of a marker-based system.