Rendering perspective views of a scene using a scanline-coherent

Details Rendering perspective views of a scene using a scanline-coherent Rendering perspective views of a scene using a scanline-coherent

1996-05-08

1998-05-05

Fetting, Anton

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

G06T 300

Patent

active

057481946

ABSTRACT:
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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Ju et al., Mapping Arbitary Projections for Volume Rendering onto an Array Processor, Proc. of Intl. Conf. on Application Specific Array Processors, pp. 160-163, Oct. 1993.
Robertson, Parallel Algorithms for Visualizing Image Surfaces, Image Processing and Its Applications, pp. 472-476, 1989.
Evemy et al., Stream Processing Architecture for Real Time Implementation of Perspective Spatial Transformations, IEEE Proceedings, pp. 123-128, Jun. 1990.
Sawhney et al., Image Description and 3-D Reconstruction from Image Trajectories of Rotational Motion, IEEE Transactions on Pattern Analysis and Machine Intelligence, pp. 885-898, Sep. 1993.

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