Mgi Software Corporation

Live Picture, Inc.

Shenchang Eric Chen

A method for preparing a presentation of a perspective view of a scene based upon an environment map representing the scene and having environment map indices, which presentation interactively displays viewing planes at any orientation, said viewing planes having scanlines, the method including generating a look-up table tabulating the environment map indices, the look-up table being characterized in that each of the scanlines of the viewing planes corresponds to information within a scanline of the look-up table, and storing the look-up table. A system is also described and claimed.

Rendering perspective views of a scene using a scanline-coherent look-up table

A method and apparatus for rendering perspective views of a 3D scene. The method of the present invention includes the steps of: providing an environment map containing pixel values representing the scene; generating a scanline-coherent look-up table containing environment map indices ordered in scanlines; mapping scanlines of a viewing plane to a portion of the look-up table scanlines based upon a pitch angle of the perspective view to be rendered; locating pixel values in a portion of the environment map based on a yaw angle and based on the environment map indices stored in the portion of the look-up table scanlines to which the viewing plane scanlines are mapped; writing the located pixel values into the viewing plane; and rendering the viewing plane onto a display.

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Saratoga, CA, United States of America

Shenchang Eric Chen