Abstract
A system for video summarization in a ubiquitous environment is presented. Data from pressure-based floor sensors are clustered to segment footsteps of different persons. Video handover has been implemented to retrieve a continuous video showing a person moving in the environment. Several methods for extracting key frames from the resulting video sequences have been implemented, and evaluated by experiments. It was found that most of the key frames the human subjects desire to see could be retrieved using an adaptive algorithm based on camera changes and the number of footsteps within the view of the same camera. The system consists of a graphical user interface that can be used to retrieve video summaries interactively using simple queries.
