Abstract: A graphical user interface is implemented as a human interface device which can directly sense where on a domed screen a user is pointing. The human interface device can be an optical pointing device which emits a beam of light, preferably produced using a laser, which can be tracked by a camera appropriately located inside the dome. As an alternative, the human interface device can be a hand held device capable of tracking position and orientation. Data produced by the human interface device is then detected and mapped to the location for a corresponding cursor.

Abstract: A graphical user interface is implemented as a human interface device which can directly sense where on a domed screen a user is pointing. The human interface device can be an optical pointing device which emits a beam of light, preferably produced using a laser, which can be tracked by a camera appropriately located inside the dome. As an alternative, the human interface device can be a hand held device capable of tracking position and orientation. Data produced by the human interface device is then detected and mapped to the location for a corresponding cursor.

Abstract: An improved theater geometry which is capable of providing improved image resolution and improved image contrast over prior systems is achieved with a unique projection geometry and image re-mapping technique. The projected image is provided with a continuously variable image resolution and brightness over the surface of a preferably dome-shaped screen which is to receive the image, concentrating the resolution and the brightness of the image within the central field-of-view of viewers that are unidirectionally seated in the theater, and sacrificing resolution and brightness toward the outside edges of the viewers' field-of-view. The result is a more efficient use of available projector resolution and brightness, an increase in the number of quality seats available in the theater, and an enhanced image contrast due to reductions in the light which is scattering from image elements to the rear of the screen.

Abstract: Ultra-wide field-of-view images are projected onto a spherical or near-spherical screen that wraps around viewers to provide a visually immersive effect. Images are acquired using a novel lens system in conjunction with standard high-resolution video or film cameras. Acquired images are then relayed onto a curved screen using a correspondingly configured, projection lens system coupled with a standard high-resolution video or film projector. A unique screen design complements the image format to provide a complete end-to-end imaging and projection system. The resulting system allows the images to be projected onto a spherical or curved screen, using a single projector and a “fisheye” or “omni” projection format, from a projection point which is approximately one radii behind the radial center of the spherical or near-spherical screen, providing a total projection distance of one screen diameter from the screen surface.