Exploring video streams using slit-tear visualizations

Slit-tear visualizations allow users to selectively visualize pixel paths in a video scene. The slit-tear visualization technique is a generalization of the traditional photographic slit-scanning and more recent video slicing techniques: after a user specifies a pixel path of interest, the system generates a timeline that replicates those pixels for each frame in the video. These rich visualizations of the video data help users to discover and explore spatio-temporal patterns of activity in a video. In this video, we illustrate the use of slit-tear visualizations to detect movement and incidence of activity in a video scene, accentuate directional motion and small changes in the video, and discover patterns of activity between spatially distinct areas of the scene. Keywords video analysis, video visualization, video interaction, information visualization ACM Classification Keywords H5.m. Information interfaces and presentation (e.g., HCI): Miscellaneous. Acknowledgements We thank Joel...

• Type: Conference
• Year: 2009
• Where: CHI
• Authors: Anthony Tang, Saul Greenberg, Sidney Fels
• Keywords: CHI 2009, Human Computer Interaction, Keywords Video Analysis, Video Scene, Video Slicing Techniques