Accuracy and Repeatability Tests on HoloLens 2 and HTC Vive

Soares, Inês; Sousa, Ricardo J. Alves de; Petry, Marcelo Roberto; Moreira, António Paulo

doi:10.20944/preprints202108.0190.v1

Cited by 12 publications

(2 citation statements)

References 14 publications

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“…In their research, Vuforia marker recognition technology 12 was used to select fiducial points for spatial registration, and the clinical accuracy of the method used with the HoloLens in neurosurgery was 7.2 mm, which prevents its direct application in neurosurgical navigation. Soares et al 13 . presented research on the accuracy and repeatability of the HoloLens; the accuracy of the HoloLens2 reached 2 cm.…”

Section: Introductionmentioning

confidence: 99%

Augmented reality surgical navigation system based on the spatial drift compensation method for glioma resection surgery

et al. 2022

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Background The number of patients who suffer from glioma has been increasing, and this malignancy is a serious threat to human health. The mainstream treatment for glioma is surgical resection; therefore, accurate resection can improve postoperative patient recovery. Purpose Many studies have investigated surgical navigation guided by mixed reality, with good outcomes. However, the limitations of mixed reality, such as spatial drift caused by environmental changes, limit its clinical application. Therefore, we present a mixed reality surgical navigation system for glioma resection. Preoperative information can be fused precisely with the real patient with the spatial compensation method to achieve clinically suitable accuracy. Methods A head‐mounted device was used to display virtual information, and a markerless spatial registration method was applied to precisely align the virtual anatomy with the real patient preoperatively. High‐accuracy preoperative and intraoperative movement and spatial drift compensation methods were used to increase the positional accuracy of the mixed reality‐guided glioma resection system when the patient's head is fixed to the bed frame. Several experiments were designed to validate the accuracy and efficacy of this system. Results Phantom experiments were performed to test the efficacy and accuracy of this system under ideal conditions, and clinical tests were conducted to assess the performance of this system in clinical application. The accuracy of spatial registration was 1.18 mm in the phantom experiments and 1.86 mm in the clinical application. Conclusions Herein, we present a mixed reality‐based multimodality‐fused surgical navigation system for assisting surgeons in intuitively identifying the glioma boundary intraoperatively. The experimental results indicate that this system has suitable accuracy and efficacy for clinical usage.

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Section: Introductionmentioning

confidence: 99%

Augmented reality surgical navigation system based on the spatial drift compensation method for glioma resection surgery

et al. 2022

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“…Soares et al (2021) estimates the HoloLens 2 accuracy for hand tracking to be 2cm and estimated a delay of 65ms in their velocity experiments. We assume worse tracking performance for objects, due to challenges like occlusion by the players hand, and conclude that this is not performant enough for an action game context.…”

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confidence: 99%

User-Defined Interaction Using Everyday Objects for Augmented Reality First Person Action Games

Greenslade

Clark

Lukosch

2022

2022 IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW)

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This thesis covers research into the use of everyday objects as props in first-person augmented reality action games. The thesis aims to answer three research questions:• RQ: Do more commonly chosen everyday objects provide a more immersive experience when used as props in a first-person augmented reality action game?-SQ 1 : Can a consensus be reached for what types of everyday objects are used as props in a first-person augmented reality action game?-SQ 2 : How can everyday objects be used as props in a first-person augmented reality action game?An elicitation study was performed to investigate these research questions. Participants in the study were offered a range of everyday objects that they could select as a prop to control a virtual sword, shield and then crossbow. Each participant completed a short game task with each virtual object, using their selection, filled in a questionnaire to measure their immersion and completed a short interview after all tasks were completed.Results from the study indicate that no, more commonly chosen everyday objects do not necessarily provide a more immersive experience when used as props in a first-person augmented reality action game -due to no significant differences found between immersion scores for the consensus and remaining objects. Yes, a consensus can be reached for what types of everyday objects are used as props in a first-person augmented reality action game but not necessarily for all virtual objects -the sword was found to have medium agreement with a shoehorn as the most popular choice, the shield was found to have high agreement with a pot-lid as the most popular choice and no consensus was found for the crossbow object. The qualitative results indicated that everyday objects can be used as props in a first-person augmented reality action game by providing intuitive ways to use the everyday objects that mimic how players would expect the virtual objects to be used and activated.

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AnyPlace: Automatic Gaze Alignment of the Teleported Avatar for MR Collaborative Environments

Chung

2022

Applied Sciences

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Tele-conference systems are widely used as a form of communication media between remote sites. In order to overcome the limitations of video-based tele-conference systems with the continued technological innovations in mixed reality (MR), the use of a three-dimensional teleported avatar, in which a remote participant is teleported into a local environment, would be an effective future tele-conference system that would allow natural movement and interaction in the same location. However, technical difficulties must be resolved to enable control of the teleported avatar adapted to the environmental differences of the remote location and the user’s situation. This paper presents a novel method to adjust automatic gaze alignment of the teleported avatar with matching in the local site for MR collaborative environments. We ran comparative validation experiments to measure spatial accuracy of the gaze and evaluate the user’s communication efficiency using our method. In a quantitative experiment, the degree of gaze matching error in various environments was found to form a mirror-symmetrical U-shape, and the necessity of gaze matching gain was also recognized. Additionally, our experimental study showed that participants felt a greater co-presence during communication than in an idle situation without conversation.

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Accuracy and Repeatability Tests on HoloLens 2 and HTC Vive

Cited by 12 publications

References 14 publications

Augmented reality surgical navigation system based on the spatial drift compensation method for glioma resection surgery

Augmented reality surgical navigation system based on the spatial drift compensation method for glioma resection surgery

User-Defined Interaction Using Everyday Objects for Augmented Reality First Person Action Games

AnyPlace: Automatic Gaze Alignment of the Teleported Avatar for MR Collaborative Environments

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