On the First JND and Break in Presence of 360-degree Content: An Exploratory Study. Azevedo, R. G. d. A., Birkbeck, N., Janatra, I., Adsumilli, B., & Frossard, P. In Proceedings of the 11th ACM Workshop on Immersive Mixed and Virtual Environment Systems, of MMVE '19, pages 1–3, New York, NY, USA, 2019. ACM.
On the First JND and Break in Presence of 360-degree Content: An Exploratory Study [link]Paper  doi  abstract   bibtex   45 downloads  
Unlike traditional planar 2D visual content, immersive 360-degree images and videos undergo particular processing steps and are intended to be consumed via head-mounted displays (HMDs). To get a deeper understanding on the perception of 360-degree visual distortions when consumed through HMDs, we perform an exploratory task-based subjective study in which we have asked subjects to define the first noticeable difference and break-in-presence points when incrementally adding specific compression artifacts. The results of our study: give insights on the range of allowed visual distortions for 360-degree content; show that the added visual distortions are more tolerable in mono than in stereoscopic 3D; and identify issues with current 360-degree objective quality metrics.
@inproceedings{2019_06_azevedo,
author={Azevedo, Roberto Gerson de Albuquerque and Birkbeck, Neil and
Janatra, Ivan and Adsumilli, Balu and Frossard, Pascal},
title={On the First JND and Break in Presence of 360-degree Content: An
Exploratory Study},
booktitle={Proceedings of the 11th ACM Workshop on Immersive Mixed and
Virtual Environment Systems},
series={MMVE '19},
year={2019},
isbn={978-1-4503-6299-3},
location={Amherst, Massachusetts},
pages={1--3},
numpages={3},
url={http://doi.acm.org/10.1145/3304113.3326115},
doi={10.1145/3304113.3326115},
acmid={3326115},
publisher={ACM},
address={New York, NY, USA},
keywords={360-degree video, JND, presence, visual distortions, visual
quality},
abstract={Unlike traditional planar 2D visual content, immersive 360-degree
images and videos undergo particular processing steps and are intended to be
consumed via head-mounted displays (HMDs). To get a deeper understanding on
the perception of 360-degree visual distortions when consumed through HMDs,
we perform an exploratory task-based subjective study in which we have asked
subjects to define the first noticeable difference and break-in-presence
points when incrementally adding specific compression artifacts. The results
of our study: give insights on the range of allowed visual distortions for
360-degree content; show that the added visual distortions are more tolerable
in mono than in stereoscopic 3D; and identify issues with current 360-degree
objective quality metrics.},
}

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