System for depicting surfaces using volumetric distance maps

Details System for depicting surfaces using volumetric distance maps System for depicting surfaces using volumetric distance maps

1997-11-06

2000-03-21

Zimmerman, Mark K.

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

345426, G06T 1500

Patent

active

060408359

ABSTRACT:
A volumetric data representation for graphical objects encodes the distance of data elements to the nearest object surface, with means being provided for estimating the direction and magnitude of surface normals from the tance values. The subject system can be used to accurately reconstruct the normal direction of a slowly varying surface in volume sampled data for high quality Volume Rendering, accurate force reflection in haptic feedback, and accurate force calculation and object penetration estimation in physically-based graphics.

REFERENCES:
patent: 4835712 (1989-05-01), Drebin et al.
patent: 5793375 (1998-08-01), Tanaka

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