Interactive Media Systems, TU Vienna

Augmented Reality Live-Action Compositing

By Thomas Pintaric

Abstract

We shall demonstrate a system that performs live-action compositing of physical and virtual objects against a panoramic background image in real-time at interactive rates. A static camera is directed towards a 40 cm³ miniature stage, whose backdrop has been colored in chromatic green. Users can add virtual objects and manipulate their parameters within the scene by using a proxy device that consists of a small rod attached to a fiducial marker. Our system runs on commodity hardware such as a notebook equipped with a firewire video camera. The necessary chroma-keying and adaptive difference-matting algorithms have been implemented on a GPU using fragment shading.

Reference

T. Pintaric: "Augmented Reality Live-Action Compositing"; Talk: ISMAR 2003, Tokyo, Japan; 10-07-2003 - 10-10-2003; in: "Proceedings of the Second IEEE and ACM International Symposium on Mixed and Augmented Reality.", (2003), ISBN: 0-7695-2006-5; 337.

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