Quality Assessment of VR Film - A Study on Spatial Features in VR Concert Experiences: Quality Assessment of VR Film - A Study on Spatial Features in VR Concert Experiences

Smed, Dina Madsen

4. term

Medialogy, Master

2017

2017-06-03

73 pages

I dette studie undersøger vi hvordan stereoskopisk video og ambisonic lyd bidrager til brugerens opfattelse af oplevelsens kvalitet (QoE), og hvordan visuelle samt lyd features har inflydelse på presence og motion sickness. Vi har gennemført to test scenarier, både en indledende test samt en mere omfattende endelig kvantitativ test. Den indledende test blev gennemført med 27 testpersoner, og den endelige test blev gennemført med 120 testpersoner. Vores resultater viser ingen signifikant forskel i kvalitetsoplevelsen eller presence. Vi fandt dog at vores testpersoner opfattede signifikant mere retning i lyden når de blev præsenteret for monoskopisk video med ambisonic lyd, end stereoskopisk video med stereo lyd. Begge de stereoskopiske produktioner havde en højere acceptance score med henblik på registreret motion sickness, hvilket er interessant, dog ikke signifikant. Dette studie reflekterer desuden vores intention med at foreslå metoder til at evaluere "Quality of Experience" i 360 graders video og VR film oplevelser.

In this study we are exploring how stereoscopic video and ambisonic sound contributes to the perceived quality of experience(QoE), and how these visual and aural features influences presence and motion sickness. Two tests have been conducted in this study, both an initial test and a comprehensive final quantitative test. The initial tests was conducted on 27 participants, and the final quantitative test was conducted on 120 participants. Our study showed no significant differences in the perceived quality or presence. However we found that people sensed significantly more direction in the sound while being presented to monoscopic imagery with ambisonic sound than compared to a stereoscopic imagery with stereo sound. Both of the stereoscopic productions had a higher acceptance score with regards to motion sickness, which is interesting, however this difference was insignificant. This study also reflects our efforts to propose methods to evaluate "Quality of Experience" in 360 video and VR film experiences.

VR ; Quality Of Experience ; QoE ; Ambisonics ; Stereoscopy ; stereoscopic video 360 ; Quality assessment ; Subjective evaluation ; MOS ; ACR ; Presence ; Immersion ; Realism ; Spatiality

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