Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension
Reexamination Certificate
2007-05-01
2007-05-01
Chauhan, Ulka (Department: 2628)
Computer graphics processing and selective visual display system
Computer graphics processing
Three-dimension
C345S418000, C345S421000
Reexamination Certificate
active
10875946
ABSTRACT:
A system and method for terrain rendering using a limited memory footprint is presented. A system and method to perform vertical ray terrain rendering by using a terrain data subset for image point value calculations. Terrain data is segmented into terrain data subsets whereby the terrain data subsets are processed in parallel. A bottom view ray intersects the terrain data to provide a memory footprint starting point. In addition, environmental visibility settings provide a memory footprint ending point. The memory footprint starting point, the memory footprint ending point, and vertical ray adjacent data points define a terrain data subset that corresponds to a particular vertical ray. The terrain data subset includes height and color information which are used for vertical ray coherence terrain rendering.
REFERENCES:
Guedes, L., Gattass, M., Carvalho, P., Real-Time Rendering of Photo-Textured Terrain Height Fields, 1997, Campos do Jordao, pp. 1-8.
Lee, C., Shin, Y., A Terrain Rendering Method Using Vertical Ray Coherence, Apr.-Jun. 1997, The Journal of Visulization and Computer Animation, pp. 97-114.
Fossum Gordon Clyde
Minor Barry L
Nutter Mark Richard
Broome Said
Chauhan Ulka
Gerhardt Diana R.
Van Leeuwen & Van Leeuwen
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