A Virtual Studio is an area covered with a chroma-key material, a suitable lighting rig and technical equipment for combining the action in front of the camera with a computer generated background. Since the concept was first introduced in the early 1990s, virtual studio projects have taken several approaches to solve the problem of merging real actors with virtual backgrounds. The simplest solution uses digital 2D backgrounds, the same technology that is used in television weather presentations. 3D perception in these static stage settings is as good as the original 2D image, but a 2D solution cannot alter the background to reflect parallax changes should the camera moves from a fixed location. A 2D solution also does not allow the real actors and objects to interact with the background (other than as ‘acting’), because the background image is restricted to a plane behind or within the set.

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