Effective Replays and Summarization of Virtual Experiences

—Direct replays of the experience of a user in a virtual environment are difficult for others to watch due to unnatural camera motions. We present methods for replaying and summarizing these egocentric experiences that effectively communicate the user’s observations while reducing unwanted camera movements. Our approach summarizes the viewpoint path as a concise sequence of viewpoints that cover the same parts of the scene. The core of our approach is a novel content dependent metric that can be used to identify similarities between viewpoints. This enables viewpoints to be grouped by similar contextual view information and provides a means to generate novel viewpoints that can encapsulate a series of views. These resulting encapsulated viewpoints are used to synthesize new camera paths that convey the content of the original viewers experience. Projecting the initial movement of the user back on the scene can be used to convey the details of their observations, and the extracted ...

• Type: Journal
• Year: 2012
• Where: TVCG
• Authors: Kevin Ponto, Joe Kohlmann, Michael Gleicher
• Keywords: Camera Motions, Camera Paths, Contextual View, Hardware, TVCG 2012