Browsing Group First-Person Videos with 3D Visualization

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This work presents a novel user interface applying 3D visualization to understand complex group activities from multiple first-person videos. The proposed interface is designed to assist video viewers to easily understand the collaborative relationships of group activity based on where the individual worker is located in a workspace and how multiple workers are positioned to one another during the group activity. More specifically, the interface not only shows all recorded first-person videos but also visualizes the 3D position and orientation of each view point (i.e., the 3D position of each worker wearing a head-mounted camera) with a reconstructed 3D model of the workspace. Our user study confirms that the 3D visualization helps video viewers to understand geometric information of a worker and collaborative relationships of group activity easily and accurately.

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