Spheree: An interactive perspective-corrected spherical 3D display

We describe Spheree, a novel, interactive spherical, perspective-corrected 3D display useful for 3D animations and 3D image-based content. We use an array of pico projectors mounted under the spherical display that are calibrated and blended using an image-fusion library to achieve a single continuous image on the spherical screen area without the use of special lenses or mirrors. By tracking the user's viewpoint, we render the correct perspective to achieve a 3D view. This approach enables the viewer to look around the entire sphere and receive both horizontal and vertical motion parallax for a full 3D view. Spheree can be used to show graphics-based contents such as 3D computer graphics animation and 3D image-based rendering applications. By providing a 3D plugin library, Spheree can easily be a second screen to computer animation and modelling software. Spheree is scalable from small, handheld display to large, walk-around experiences. Spheree supports direct interaction techniques for an exciting participant experience. The advancees of our 3D display are the fidelity of the experience and robustness of the displays.