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Advances in Human-Computer Interaction
Volume 2012 (2012), Article ID 343197, 11 pages
http://dx.doi.org/10.1155/2012/343197
Research Article

Analysis of User Requirements in Interactive 3D Video Systems

I-Lab, Multimedia Communications Research, Centre for Vision, Speech and Signal Processing, University of Surrey, Guildford Gu2 7XH, UK

Received 29 March 2012; Revised 1 August 2012; Accepted 16 August 2012

Academic Editor: Kiyoshi Kiyokawa

Copyright © 2012 Haiyue Yuan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The recent development of three dimensional (3D) display technologies has resulted in a proliferation of 3D video production and broadcasting, attracting a lot of research into capture, compression and delivery of stereoscopic content. However, the predominant design practice of interactions with 3D video content has failed to address its differences and possibilities in comparison to the existing 2D video interactions. This paper presents a study of user requirements related to interaction with the stereoscopic 3D video. The study suggests that the change of view, zoom in/out, dynamic video browsing, and textual information are the most relevant interactions with stereoscopic 3D video. In addition, we identified a strong demand for object selection that resulted in a follow-up study of user preferences in 3D selection using virtual-hand and ray-casting metaphors. These results indicate that interaction modality affects users’ decision of object selection in terms of chosen location in 3D, while user attitudes do not have significant impact. Furthermore, the ray-casting-based interaction modality using Wiimote can outperform the volume-based interaction modality using mouse and keyboard for object positioning accuracy.