System and method for blending data sampling techniques

Details System and method for blending data sampling techniques System and method for blending data sampling techniques

2006-09-26

2006-09-26

Chauhan, Ulka (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

C345S423000, C345S428000

Reexamination Certificate

active

07113184

ABSTRACT:
A system and method for terrain rendering using a limited memory footprint is presented. A vertical ray intersects a terrain data map at an angle which includes a minor step size. Weighting factors are assigned to triangular data sampling values and quadrilateral data sampling values based upon a vertical ray's minor step size. As a vertical ray's minor step size increases, a triangular data sampling's weighting factor increases and a quadrilateral data sampling's weighting factor decreases. Weighted triangular data sampling values and weighted quadrilateral data sampling values are combined to generate a vertical ray image point value.

REFERENCES:
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.
Qin, J., Wan, M., Qu, H., Kaufman, A., Accelerating Voxel-Based Terrain Rendering With Keyframe-Free Image-Based Rendering, Jun. 2001, International Workshop on Volume Graphics, pp. 1-13.

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