Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension
Patent
1997-03-31
1999-07-06
Vo, Cliff N.
Computer graphics processing and selective visual display system
Computer graphics processing
Three-dimension
G06T 1540
Patent
active
059203200
ABSTRACT:
A three-dimensional shape data transforming apparatus comprising a shape storage unit, an image generation unit, a frame buffer, a Z buffer and vertex determination unit. The image generation unit projects an original shape represented by shape data in the shape storage unit onto a predetermined projection surface (e.g., a cylindrical surface) to create an image. The frame buffer and Z buffer store color information (RGBA values) and depth values (Z values) respectively. The vertex determination unit makes the original shape correspond to an approximate shape (mesh shape) constituted by a plurality of designation points (lattice points) represented by two-dimensional coordinates, and determines the coordinates of the vertexes to which the designation points on the surface of the original shape are made to correspond in accordance with the two-dimensional coordinates of the corresponding designation points and with the corresponding depth values in the Z buffer, whereby the data constituted by the vertexes are regarded as the data on the approximate shape representing the transformed original shape.
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Fujitsu Ltd.
Vo Cliff N.
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