Abstract: A virtual reality imaging system for two or more users including: at least one screen for presenting images of a virtual environment to two or more users; an imaging assembly, including two or more sets of projectors corresponding to the two or more users for producing images on the at least one screen; a tracking system that is configured to track each of the two or more users; a computer that is programmed to produce stereo 3D images of the virtual environment corresponding to tracking data from the tracking system for phone providing different views of the same virtual environment; stereo 3D glasses arranged to provide stereo 3D images; and an image separation arrangement whereby each user sees images emanating from a corresponding one of the sets of projectors only.

Abstract: A virtual reality imaging system for two or more users including: at least one screen for presenting images of a virtual environment to two or more users; an imaging assembly, including two or more sets of projectors corresponding to the two or more users for producing images on the at least one screen; a tracking system that is configured to track each of the two or more users; a computer that is programmed to produce stereo 3D images of the virtual environment corresponding to tracking data from the tracking system for phone providing different views of the same virtual environment; stereo 3D glasses arranged to provide stereo 3D images; and an image separation arrangement whereby each user sees images emanating from a corresponding one of the sets of projectors only.

Abstract: A method is provided for rendering a three dimensional scene upon an electronic processor based system such as a computer, cellular phone, games console or other device. The method involves rendering a three dimensional scene by activating pixels of an electronic display device using a perspective projection for some portions of the scene and an orthogonal projection for others. A far less computationally expensive orthogonal projection is used for rendering other portions of the scene which meet a predetermined condition. The method results in a rendered scene displayed by pixels of the display device that appears overall to have been realistically rendered using a perspective transformation. However, since portions of the rendered scene have been rendered using an orthogonal projection, the method is computationally less expensive than rendering using only perspective projection.

Abstract: A computer graphics method is provided for implementation upon an electronic processor based system such as a computer, cellular phone, games console or other device. The method involves rendering a three dimensional scene i.e. by activating pixels of an electronic display device of the system, using a perspective projection for some portions of the scene and an orthogonal projection for others. Perspective projection is used in respect of those portions of the scene for which a noticeable difference would occur between rendering in perspective projection and rendering with an orthogonal projection. A far less computationally expensive orthogonal projection is used for rendering other portions of the scene which meet a predetermined condition. The method results in a rendered scene displayed by pixels of the display device that appears overall to have been realistically rendered using a perspective transformation.