Viewable scene modeling for geospatial video search
MM '08 Proceedings of the 16th ACM international conference on Multimedia
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It is now very easy to produce user generated videos (UGV) due to progress in camera and recording technologies on mobile devices, such as smartphones. Additionally, the ubiquitous, built-in sensors in digital devices can greatly enrich these videos with sensor descriptions, for example geo-spatial properties. A repository of such sensor-rich videos is a valuable source of information for prospective tourists when they plan to visit a city and would like to get a preview of its main attractions. Inspired by this, we have built an interactive geo-video search system. On a given map, a user specifies a start point and a destination and the system dynamically retrieves a video summarization along the path between the two points. Moreover, the user can interactively update the query during the video playback by dragging the route on the map. The main features of our technique are, first, that it is fully automatic and leverages sensor meta-data information which is acquired in conjunction with videos. Second, the system dynamically adapts to query updates in real-time. Third, a concise but comprehensive summarization from multiple user generated videos is presented for any queried route.