Feasibility of using a fully immersive virtual reality system for kinematic data collection

Mapping Intimacies ◽

10.1101/547992 ◽

2019 ◽

Author(s):

Kate A. Spitzley ◽

Andrew R. Karduna

Keyword(s):

Virtual Reality ◽

Data Collection ◽

Tracking System ◽

High Volume ◽

Virtual Reality System ◽

Kinematic Data ◽

Magnetic Tracking ◽

Signal Drift ◽

Research Grade ◽

Rigid Segment

AbstractCommercially-available Virtual Reality (VR) systems have the potential to be effective tools for simultaneous visual manipulation and kinematic data collection. Previously, these systems have been integrated with research-grade motion capture systems to provide both functionalities; however, they are yet to be used as stand-alone systems for kinematic data collection. This study aimed to validate the HTC VIVE VR system for kinematic data collection by evaluating the accuracy of its position and orientation signals. The VIVE controller and tracker were each compared to a Polhemus Liberty magnetic tracking system sensor for angular and translational measurement error and signal drift. A sensor from each system was mounted to opposite ends of a rigid segment which was driven through fifty rotations and fifty translations. Mean angular errors for both the VIVE tracker and controller were below 0.4°. Mean translational error for both sensors was below 3 mm. Drift in the Liberty signal components was consistently lower than drift in VIVE components. However, all mean rotational drift measures were below 0.1° and all mean translational measures were below 0.35 mm. These data indicate that the HTC VIVE system may be a valid and reliable means of kinematic data collection. However, further investigation is necessary to determine the VIVE’s suitability for capturing extremely minute or high-volume movements.

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Feasibility of using a fully immersive virtual reality system for kinematic data collection

Journal of Biomechanics ◽

10.1016/j.jbiomech.2019.02.015 ◽

2019 ◽

Vol 87 ◽

pp. 172-176 ◽

Cited By ~ 3

Author(s):

Kate A. Spitzley ◽

Andrew R. Karduna

Keyword(s):

Virtual Reality ◽

Data Collection ◽

Immersive Virtual Reality ◽

Virtual Reality System ◽

Kinematic Data

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VR-SMART: A Virtual Reality System for Smart Home Environments

Volume 2: 31st Computers and Information in Engineering Conference, Parts A and B ◽

10.1115/detc2011-48585 ◽

2011 ◽

Cited By ~ 1

Author(s):

Nathan D. Darnall ◽

Vinay Mishra ◽

Sankar Jayaram ◽

Uma Jayaram

Keyword(s):

Virtual Reality ◽

Smart Home ◽

Tracking System ◽

Virtual Reality System ◽

Positional Accuracy ◽

Home Environments ◽

Smart System ◽

Head Mounted Display ◽

Six Dof ◽

Smart Home Environments

Virtual reality (VR) technologies and systems have the potential to play a key role in assisting disabled inhabitants of smart home environments with instrumental activities of daily living (IADLs). While immersive environments have useful applications in the fields of gaming, simulation, and manufacturing, their capabilities have been largely untapped in smart home environments. We have developed an integrated CAD and virtual reality system which assists a smart home resident in locating and navigating to objects in the home. Using the methods presented in this paper, a room modeled in a CAD system is imported into a virtual environment, which is linked to an audio query-response interface. The user’s head and room objects are fitted with the sensors which are part of a six DOF motion tracking system. Methods have been created to allow the inhabitant to move objects around in the room and then later issue an audio query for the location of the object. The system generates an audio response with the object’s position relative to the person’s current position and orientation. As he approaches the object, information is derived from the virtual models of both the room and the objects within the room to provide better guidance. The ability of the VR-SMART system to guide a resident to an object was tested by mounting a head mounted display (HMD) on a user located in a room. This allowed the user to navigate through the virtual world that simulated the room he occupied, thereby providing a way to test the positional accuracy of the virtual system. Results of the testing in the immersive environment showed that although the overall system shows promise at a 30% success rate, the success of the system depends on the accuracy and calibration of the tracking system. In order to improve the success of the system, we explored the precision of a second motion capture system, with more accurate results. Results confirmed that the VR-SMART system could significantly improve the assistance of disabled people in finding objects easily in the room when implemented only as an assistive system without the head-mounted display.

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Optoelectronic tracking system for shooting simulator - tests in a virtual reality application

Photonics Letters of Poland ◽

10.4302/plp.v12i2.1025 ◽

2020 ◽

Vol 12 (2) ◽

pp. 61

Author(s):

Marcin Maciejewski ◽

Marek Piszczek ◽

Mateusz Pomianek ◽

Norbert Pałka

Keyword(s):

Virtual Reality ◽

Motion Tracking ◽

Tracking System ◽

Low Cost ◽

Test Results ◽

Virtual Reality System ◽

Training Simulator ◽

Present Test ◽

Accuracy And Precision ◽

Tracking Device

We present test results of an authorial tracking device developed in the SteamVR system, optimized for use in a missile launcher shooting simulator. Data for analysis was collected using the virtual reality training application, with the launcher set on a stable tripod and held by a trainee who executed two scenarios with static and movable targets. The analysis of experimental data confirms that the SteamVR system together with the developed tracker can be successfully implemented in the virtual shooting simulator. Full Text: PDF ReferencesD. Bogatinov, P. Lameski, V. Trajkovik, K.M. Trendova, "Firearms training simulator based on low cost motion tracking sensor", Multimed. Tools Appl. 76(1) (2017) CrossRef D.C. Niehorster, L. Li, M. Lappe, "The Accuracy and Precision of Position and Orientation Tracking in the HTC Vive Virtual Reality System for Scientific Research", Iperception. 8(3) (2017) CrossRef A. Yates, J. Selan, POSITIONAL TRACKING SYSTEMS AND METHODS. US20160131761A1, (2016) DirectLink P. Caserman, A. Garcia-Agundez, R. Konrad, S. Göbel, R. Steinmetz, Virtual Real. 23(2) (2019) 155-68. CrossRef

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Study on tracking system with pulsed AC magnetic field for virtual reality system

10.1117/12.497774 ◽

2003 ◽

Cited By ~ 3

Author(s):

Yue Liu ◽

Yongtian Wang ◽

Xiaoming Hu

Keyword(s):

Magnetic Field ◽

Virtual Reality ◽

Tracking System ◽

Virtual Reality System ◽

Ac Magnetic Field

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Mobilization and calibration of the HTC VIVE for virtual reality physical therapy

Digital Health ◽

10.1177/2055207620950929 ◽

2020 ◽

Vol 6 ◽

pp. 205520762095092

Author(s):

Sydney Hemphill ◽

Alan Nguyen ◽

Samuel T Rodriguez ◽

Maria Menendez ◽

Ellen Wang ◽

...

Keyword(s):

Virtual Reality ◽

Physical Therapy ◽

Motion Tracking ◽

Kinematic Data ◽

Research Grade ◽

The Mean ◽

Potential Tool

Aims The HTC VIVE virtual reality (VR) system is a potential tool for collecting kinematic data during inpatient and outpatient physical therapy (PT). When validated against research-grade systems, the VIVE has a reported translational error between 1.7 mm–2.0 cm. Our purpose was to portabilize the VIVE for room to room PT and validate the motion tracking software. Methods The VIVE was configured on a mobile cart. To validate the motion tracking software, the VIVE sensors (motion tracker, controller, headset) were mounted on a rigid linear track and driven through 10, one-meter translations in the X, Y, and Z axes. Results The mean translational error for all three sensors was below 4.9 cm. While error is greater than that reported for research-grade systems, motion tracking software on the portable VIVE unit appears to be a valid means of tracking aggregate movement. Conclusion Some therapy may require more precise measurements, however, the advantages of portability and accessibility to patients may outweigh the limitation of reduced precision.

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Improvements to magnetic tracking system for virtual reality

10.1117/12.667446 ◽

2006 ◽

Author(s):

Yue Liu ◽

Xiaoming Hu ◽

Yongtian Wang ◽

Dayuan Yan

Keyword(s):

Virtual Reality ◽

Tracking System ◽

Magnetic Tracking

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Kinematic Metrics Based on the Virtual Reality System Toyra as an Assessment of the Upper Limb Rehabilitation in People with Spinal Cord Injury

BioMed Research International ◽

10.1155/2014/904985 ◽

2014 ◽

Vol 2014 ◽

pp. 1-11 ◽

Cited By ~ 6

Author(s):

Fernando Trincado-Alonso ◽

Iris Dimbwadyo-Terrer ◽

Ana de los Reyes-Guzmán ◽

Patricia López-Monteagudo ◽

Alberto Bernal-Sahún ◽

...

Keyword(s):

Spinal Cord ◽

Spinal Cord Injury ◽

Virtual Reality ◽

Upper Limb ◽

Cervical Spinal Cord ◽

Virtual Reality System ◽

Kinematic Data ◽

Clinical Scales ◽

Cord Injury ◽

Accuracy And Repeatability

The aim of this study was to develop new strategies based on virtual reality that can provide additional information to clinicians for the rehabilitation assessment. Virtual reality system Toyra has been used to record kinematic information of 15 patients with cervical spinal cord injury (SCI) while performing evaluation sessions using the mentioned system. Positive correlation, with a moderate and very strong association, has been found between clinical scales and kinematic data, considering only the subscales more closely related to the upper limb function. A set of metrics was defined combining these kinematic data to obtain parameters of reaching amplitude, joint amplitude, agility, accuracy, and repeatability during the evaluation sessions of the virtual reality system Toyra. Strong and moderate correlations have been also found between the metrics reaching and joint amplitude and the clinical scales.

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