Extending 3-DoF Metrics to Model User Behaviour Similarity in 6-DoF Immersive Applications

Silvia Rossi, Irene Viola, Laura Toni, Pablo Cesar

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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Abstract

Immersive reality technologies, such as Virtual and Augmented Reality, have ushered a new era of user-centric systems, in which every aspect of the coding-delivery-rendering chain is tailored to the interaction of the users. Understanding the actual interactivity and behaviour of the users is still an open challenge and a key step to enabling such a user-centric system. Our main goal is to extend the applicability of existing behavioural methodologies for studying user navigation in the case of 6 Degree-of-Freedom (DoF). Specifically, we first compare the navigation in 6-DoF with its 3-DoF counterpart highlighting the main differences and novelties. Then, we define new metrics aimed at better modelling behavioural similarities between users in a 6-DoF system. We validate and test our solutions on real navigation paths of users interacting with dynamic volumetric media in 6-DoF Virtual Reality conditions. Our results show that metrics that consider both user position and viewing direction better perform in detecting user similarity while navigating in a 6-DoF system. Having easy-To-use but robust metrics that underpin multiple tools and answer the question "how do we detect if two users look at the same content?"open the gate to new solutions for a user-centric system.

Original languageEnglish
Title of host publicationMMSys 2023 - Proceedings of the 14th ACM Multimedia Systems Conference
PublisherAssociation for Computing Machinery (ACM)
Pages39-50
Number of pages12
ISBN (Electronic)979-8-4007-0148-1
DOIs
Publication statusPublished - 2023
Event14th ACM Multimedia Systems Conference, MMSys 2023 - Vancouver, Canada
Duration: 7 Jun 202310 Jun 2023

Publication series

NameMMSys 2023 - Proceedings of the 14th ACM Multimedia Systems Conference

Conference

Conference14th ACM Multimedia Systems Conference, MMSys 2023
Country/TerritoryCanada
CityVancouver
Period7/06/2310/06/23

Keywords

  • 6-DoF
  • data clustering
  • immersive reality
  • point cloud
  • trajectory analysis
  • user behavioural analysis
  • virtual reality

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