Method and system for rendering two-dimensional views of a three

Details Method and system for rendering two-dimensional views of a three Method and system for rendering two-dimensional views of a three

1996-04-16

1998-07-14

Nguyen, Phu K.

Computer graphics processing and selective visual display system

Computer graphics processing

Adjusting level of detail

G06F 1500

Patent

active

057811954

ABSTRACT:
A method and system for rendering a two-dimensional image of a three-dimensional surface in real time directly from surface-feature data stored in computer-readable format. A two-dimensional screen display may therefore be rendered "on the fly" for any view point, altitude, and orientation in three-dimensional space. Changing the view point enables panning, changing the altitude allows zooming, and changing the orientation allows spinning of the image. Successive two-dimensional renderings from an initial field of view are rendered to present a sequence of screen displays that effectively pan, zoom, or spin the image of the three-dimensional surface. The rendering methods are sufficiently fast when implemented on preferred personal computer systems so as to enable panning, zooming, and spinning at a satisfactory rate in response to user commands. To the user, the surface features appears to pan, zoom, or spin in real time. Two-dimensional views may be rendered of any three-dimensional structure such as an airplane, power plant, anatomical organ, atomic particle, etc. In particular, two-dimensional views of maps of the surface of the Earth are rendered in connection with a multimedia world atlas computer program.

REFERENCES:
patent: 5448696 (1995-09-01), Shimada et al.
patent: 5638523 (1997-06-01), Mullet et al.

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