Interactive Schematic Summaries for Faceted Exploration of Surveillance Video

Autor(en): Hoeferlin, Markus
Hoeferlin, Benjamin
Heidemann, Gunther 
Weiskopf, Daniel
Stichwörter: Computer Science; Computer Science, Information Systems; Computer Science, Software Engineering; Interactive schematic summary; scatter/gather browsing; Telecommunications; trajectory bundling; video exploration
Erscheinungsdatum: 2013
Herausgeber: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Journal: IEEE TRANSACTIONS ON MULTIMEDIA
Volumen: 15
Ausgabe: 4
Startseite: 908
Seitenende: 920
Zusammenfassung: 
We present a scalable technique to explore surveillance videos by scatter/gather browsing of trajectories of moving objects. Trajectories are clustered according to a variety of properties, such as location, orientation, and velocity that can be selected by the users. These properties allow for faceted video exploration and refinement of previous browsing steps. The proposed approach facilitates interactive clustering of trajectories by an effective way of cluster visualization that we term schematic summaries. This novel visualization illustrates cluster summaries in a schematic, nonphotorealistic style. To reduce visual clutter, we introduce the trajectory bundling technique. Further, schematic summaries include a timeline view and a showcase view to represent the facets present in a cluster. The fusion of schematic summaries, a variety of facets, and user interaction lead to efficient hierarchical exploration of video data. Examples of different browsing scenarios and initial user feedback demonstrate the potentials of our method.
ISSN: 15209210
DOI: 10.1109/TMM.2013.2238521

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