Hong, Y; MacQuarrie, A; Steed, A; (2018) The Effect of Chair Type on Users’ Viewing Experience for 360-degree Video. In: Spencer, Stephen N and Itoh, Yuichi and Shiratori, Takaaki and Yue, Yonghao and Lindeman, Rob, (eds.) Proceedings of the 24th ACM Symposium on Virtual Reality Software and Technology (VRST '18). ACM: New York, NY, USA.

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Abstract

The consumption of 360-degree videos with head-mounted displays (HMDs) is increasing rapidly. A large number of HMD users watch 360-degree videos at home, often on non-swivel seats; however videos are frequently designed to require the user to turn around. This work explores how the di!erence in users’ chair type might in"uence their viewing experience. A between-subject experiment was conducted with 41 participants. Three chair conditions were used:#xed, half-swivel and full-swivel. A variety of measures were explored using eye-tracking, questionnaires, tasks and semistructured interviews. Results suggest that the#xed and half-swivel chairs discouraged exploration for certain videos compared with the full-swivel chair. Additionally, participants in the#xed chair had worse spatial awareness and greater concern about missing something for certain video than those in the full-swivel chair. No signi#cant di!erences were found in terms of incidental memory, general engagement and simulator sickness among the three chair conditions. Furthermore, thematic analysis of post-experiment interviews revealed four themes regarding the restrictive chairs: physical discomfort, di$culty following moving objects, reduced orientation and guided attention. Based on the#ndings, practical implications, limitations and future work are discussed.

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