What did I miss? Visualizing the Past through video traces

Abstract

Abstract. Always-on media spaces broadcast video between collaborators to provide mutual awareness and to encourage casual interaction. This video can be easily recorded on the fly as a video trace. Ostensibly, people can review this video history to gain a better idea of the activities and availability of their collaborators. Such systems are obviously highly contentious, as they raise significant privacy concerns. However, the ease of capturing video means that video trace systems will appear in the near future.To push the boundaries and encourage debate about video trace technologies within the CSCW community, we created TIMELINE, a highly effective visualization system that combines ideas in slit scanning as used in interactive art to allow people to easily and rapidly explore a video history in detail. We describe its design and implementation, and begin the debate by offering preliminary reflections on how it can be used and misused. To encourage this debate, TIMELINE is freely available for others to try.

An Architecture and a Platform for Recording and Replaying the Healthcare Information

“…Nunes et al [13] created the TIMELINE visualization system that allows people to easily and rapidly explore a video history in detail. Features of the Timeline are that the system lets peoples do the following: 1) immediately see patterns of the activity within a video history via a technique called slit-scanning; 2) use minute, hour, day and week visualizations to present longitudinal overviews of the history at different time granularities; 3) explore patterns across different parts of the scene by moving the slit; 4) rapidly explore event details within a large video stream by scrubbing; 5) retrieve further details of the far past by selecting times of interest.…”

ColourVis: Exploring colour in digital images

“…The Last Clock project visualised video surveillance footage in public area capturing time and motion and then mapping seconds, minutes, hours using the metaphor of a clock face to show data variance over time [1]. The Video Traces Project, visualises video data in order to gain an understanding of activity of people captured on the video and supports rapid exploration of the history of a video stream [24]. Also, the Artifacts of the Presence Era visualisation make use of video as a data source but presents a stacked graph visualisation which uses the metaphor of sedimentary accumulation over time [35].…”

ColorsInMotion

“…[15] collects information about slit scan video artwork. Timeline [19] adopts slit scanning to allow easy and rapid exploration of a video history to view participants in collaborative scenarios.…”