On the Use of Persistent Spatial Points for Deploying Path Navigation in Augmented Reality: An Evaluation Study

Bachras, Vasileios; Raptis, George; Avouris, Nikolaos

doi:10.1007/978-3-030-29390-1_17

Cited by 6 publications

(4 citation statements)

References 17 publications

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“…Augmented Reality (AR) can be used to improve everyday experiences. In the last years, AR applications have been developed for diverse use cases, such as navigation (Bachras et al, 2019;Guarese and Maciel, 2019) or exhibitions (Hammady et al, 2020;Vlizos et al, 2021), where the technology enhanced the overall experience. However, including AR experiences in a museum exhibition can be a great challenge for museum curators, who typically are not experienced with AR applications and how to apply AR to their exhibition.…”

Section: Introductionmentioning

confidence: 99%

Supporting the creation of non-linear everyday AR experiences in exhibitions and museums: An authoring process based on self-contained building blocks

Rau

Bitter

Liu

et al. 2022

Front. Virtual Real.

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The use of Augmented Reality (AR) has the potential to make everyday experiences exciting and educational. For example, AR can augment exhibits in museums with animated and interactive content. The creation of this content, however, is still facing challenges. To meet these, we employ reusable, pattern-based building blocks called AR nuggets. An AR nugget implements one application pattern in a small and self-contained piece of software to provide a complete solution for recurrent AR-based experiences. For example, in the application context of museums and exhibitions, we identify superimposition or visualization of echolocation as general patterns for AR use cases. AR nuggets encapsulate AR-specific knowledge and sophisticated functionalities to support authors and reduce the authoring task to tweaking existing templates to individual exhibits. To connect AR nuggets used in different exhibition rooms, we present novel AR nuggets that encapsulate the functionalities needed for creating a path between the exhibits. Additionally, we provide examples of AR nuggets that implement a virtual character that guides visitors to exhibits of interest. With this new set of AR nuggets, spatial connections can be authored, e.g., in the form of a guided tour with interactive narration. For this authoring task, we introduce an AR nugget manager that supports authors in creating and adapting multiple non-linear AR experiences. We illustrate our approach with the creation of an everyday AR application for a museum of natural history, share our experiences and discuss to what extent our approach can mitigate authoring challenges for everyday AR applications from a museum’s point of view. This work contributes to the field of everyday AR with 1) a pattern-based authoring concept to create complex everyday AR experiences based on self-contained building blocks, 2) a set of patterns that allows for spatial connections of these to create non-linear AR content, 3) means for supporting this authoring process in the form of an AR nugget manager, 4) lessons learned in applying our authoring concept in a real application case in a museum, 5) our observation of hurdles that still prevent more widespread use of AR in everyday applications during the realization of this application case.

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Section: Introductionmentioning

confidence: 99%

Supporting the creation of non-linear everyday AR experiences in exhibitions and museums: An authoring process based on self-contained building blocks

Rau

Bitter

Liu

et al. 2022

Front. Virtual Real.

View full text Add to dashboard Cite

show abstract

“…The tests allow us to conclude that the two-step calibration increases the precision compared to the simple calibration, and it also is more suitable for use in industrial scenarios where the localization of objects with high precision is required. Some hypotheses of contributions of the calibration model proposed in other research [20] help to exemplify the possibilities of practical applications of the two-step calibration model. These hypotheses open new lines of investigation and, consequently, new opportunities for studies.…”

Section: Discussionmentioning

confidence: 99%

“…Thus, this study contributes to the expansion of technical productions on the adoption of HoloLens in industrial environments, establishing numerical criteria for evaluation and comparison with future solutions. However, it is possible to establish a dialogue between the calibration Bachras, Raptis, and Avouris [20] carried out an empirical study that points to the use of anchors as an instrument to guarantee accuracy and precision in augmented reality applications using HoloLens. Access to the polygon mesh produced by HoloLens during spatial recognition is a necessary condition to generate the executables of these authors' applications.…”

Section: Discussionmentioning

confidence: 99%

Three-Dimensional Coordinate Calibration Models for Augmented Reality Applications in Indoor Industrial Environments

Nunes,

Almeida,

Silva

et al. 2023

Applied Sciences

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The calibration of three-dimensional (3D) coordinates in augmented reality systems is a complex activity. It involves the recognition of environmental characteristics and technology that models the 3D space of the device, determining its position and orientation. Single markers suffer from numerical instability, particularly when they are small within the camera image. In the industrial environment, it is common for augmented reality applications to cover large spaces, making it difficult to maintain attributes such as precision and accuracy. To address this issue, our study proposes a two-step calibration model that leverages multiple markers for accurate localization in a larger indoor environment. We developed the calibration model using Unity3D, Mixed Reality ToolKit, and Vuforia and evaluated it in terms of precision and accuracy in a proof of concept using the MS Hololens device. Our findings reveal that employing two markers significantly reduces angular discrepancies between points in the real and augmented environments. Moreover, our results underscore that registration accuracy improves as the number of calibration points increases. The results show improvements in determining the axes that define the 3D space, with a direct influence on the position of the points observed in the experiment.

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“…The initial position is not a good reference since it changes at each session; the visualization of cultural heritage works demands a stable and persistent reference linked to the scene and not to the position of the device inside the real environment. This is why the efforts of scholars and researchers are addressed to the development of time persistent AR solutions (Barrile et al, 2019, Palma et al, 2019Kaimaris et al, 2021;Torresani et al, 2021); in Morar et al (2021) have proposed a persistent solution inside the project CultReal; in Bachras et al (2019) have developed interesting test on the same subject.…”

Section: Related Workmentioning

confidence: 99%

Ar Methods for the Visualization of the Lost Marble “Tribuna” in the Main Apse of the Cathedral of Palermo

Cannella

2022

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Abstract. In recent years research works have shown that augmented reality tools can offer effective support for the dissemination of architectural heritage, when integrated into the information data extracted with surveying and representation tools and further data from other sources, e.g., history.The development and permanent updating of software platforms dedicated to augmented reality, i.e., Apple's ARKit and Google's ARCore, as well as the introduction of new features, offer today affordable support for the development of AR solutions.Some operational difficulties are due to the rapid and constant evolution of the technologies; the available solutions can be compared to prototypes and the development of user experience effective solutions appears still lacking. The main subject in the construction of AR solutions is still linked to the development of effective methods to properly set up the visualization of 3D models and their interaction with the real scene. The chosen case study for the test of persistent AR solution for the visualization of works of art is the ‘Tribuna’, i.e., a monumental and sculptural marble apparatus, that decorated the main apse of the Cathedral of Palermo.

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On the Use of Persistent Spatial Points for Deploying Path Navigation in Augmented Reality: An Evaluation Study

Cited by 6 publications

References 17 publications

Supporting the creation of non-linear everyday AR experiences in exhibitions and museums: An authoring process based on self-contained building blocks

Supporting the creation of non-linear everyday AR experiences in exhibitions and museums: An authoring process based on self-contained building blocks

Three-Dimensional Coordinate Calibration Models for Augmented Reality Applications in Indoor Industrial Environments

Ar Methods for the Visualization of the Lost Marble “Tribuna” in the Main Apse of the Cathedral of Palermo

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