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Issue No.06 - November/December (2008 vol.14)
pp: 1755-1762
Yi Wang , Virginia Tech
Doug Bowman , Virginia Tech
David Krum , Bosch RTC
Enylton Coalho , Bosch RTC
Tonya Smith-Jackson , Virginia Tech
David Bailey , Virginia Tech
Sarah Peck , Virginia Tech
Swethan Anand , Virginia Tech
Trevor Kennedy , Virginia Tech
Yernar Abdrazakov , Virginia Tech
Many interesting and promising prototypes for visualizing video data have been proposed, including those that combine videos with their spatial context (contextualized videos). However, relatively little work has investigated the fundamental design factors behind these prototypes in order to provide general design guidance. Focusing on real-time video data visualization, we evaluated two important design factors — video placement method and spatial context presentation method — through a user study. In addition, we evaluated the effect of spatial knowledge of the environment. Participants’ performance was measured through path reconstruction tasks, where the participants followed a target through simulated surveillance videos and marked the target paths on the environment model. We found that embedding videos inside the model enabled realtime strategies and led to faster performance. With the help of contextualized videos, participants not familiar with the real environment achieved similar task performance to participants that worked in that environment. We discuss design implications and provide general design recommendations for traffic and security surveillance system interfaces.
Index Terms—contextualized videos, design factors, user study, video placement, spatial context, tracking, path reconstruction
Yi Wang, Doug Bowman, David Krum, Enylton Coalho, Tonya Smith-Jackson, David Bailey, Sarah Peck, Swethan Anand, Trevor Kennedy, Yernar Abdrazakov, "Effects of Video Placement and Spatial Context Presentation on Path Reconstruction Tasks with Contextualized Videos", IEEE Transactions on Visualization & Computer Graphics, vol.14, no. 6, pp. 1755-1762, November/December 2008, doi:10.1109/TVCG.2008.126
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