Trajectory based video object manipulation

We propose an object centric representation for easy and intuitive navigation and manipulation of videos. Object centric representation allows a user to directly access and process objects as basic video components. We demonstrate a trajectory based interface and example operations, which allow users to retime, reorder, remove or clone video objects in a ´click and drag´ fashion. This interface is created by extracting object motion information from the video. We use object detection and tracking to obtain spatiotemporal video object tube. The corresponding object motion trajectories are represented in a 3D (x, y, t) grid. Users can navigate and manipulate video objects by scrubbing or manipulating corresponding trajectories. We show some example applications of proposed inter face like object synchronization, saliency magnification, visual effects and composite video creation.