Direct rendering of textured height fields

Details Direct rendering of textured height fields Direct rendering of textured height fields

1995-11-29

1996-11-26

Herndon, Heather R.

395119, 395127, 395121, G06T 1500

Patent

active

055794564

ABSTRACT:
To create a dynamic textured display, images of textured height fields (elevation samples arrayed on a rectangular coordinate grid, as to represent a terrain) are rendered, the system performing an initial pass that re-samples the height-field data into a radial form and a subsequent pass using the radial data to create textured, shaded picture elements (pixels) for an instantaneous field of view. Thus, texturing, shading, blending and scan conversion complete the pixel processing to drive a display unit. The system is particularly applicable to the generation of dynamic perspective images of terrain. The process provides pixel-limited textural resolution in the final image with effective antialiasing of internal and horizontal silhouette edges.

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