Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: From 3-DoF to 6-DoF: New Metrics to Analyse Users Behaviour in Immersive
  Applications   This work focuses on enabling user-centric immersive systems, in which every
aspect of the coding-delivery-rendering chain is tailored to the interactive
users. Understanding the actual interactivity and behaviour of those users is
still an open challenge and a key step to enable such a user-centric system.
Our main goal is to enable user behavioural analysis in the case of 6
degree-of-freedom (DoF) systems by extending the applicability of existing
behavioural methodologies adopted for studying user behaviour in 3-DoF
settings. Specifically, we deeply analyse 6-DoF navigation patterns with
comparisons to the 3-DoF counterpart. Then, we define new metrics aimed at
better modelling users similarities in a 6-DoF system. We validate and test our
solutions on real navigation paths of users while displaying dynamic volumetric
media in 6-DoF Virtual Reality conditions. To show the flexibility and
generality of our proposed metrics, we also test their performance on
navigation trajectories collected in a 6-DoF Augmented Reality settings. 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 I detect if two users look at the same
content?" open the gate to new solutions for a user-centric system.

23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
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The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin