Fast method of creating 3D surfaces by `stretching cubes`

Details Fast method of creating 3D surfaces by `stretching cubes` Fast method of creating 3D surfaces by `stretching cubes`

1997-01-21

2000-09-05

Nguyen, Phu K.

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

G06F 1500

Patent

active

061150487

ABSTRACT:
A system for displaying surfaces of volumetric data determines surface cubes by a simple method without interpolation. A central voxel is selected. The central voxel is tested against a threshold. If it is below the threshold, a different voxel is chosen as a central voxel. When one is found which is above the threshold, diagonal cubes, those at each of the corners of the central voxel, are tested against the threshold. When one is encountered with at least one voxel below the threshold, it is categorized as a surface voxel. The values of the adjacent voxels are then used to determine a vector normal to the surface at the central voxel. This is repeated for a number of central voxels to determine a surface. The surface then may be displayed. If anisotropic voxels are used, the elevation angle is converted to an effective elevation angle. The normal vectors to the surface are also adjusted to compensate for the anisotropic nature of the data. The voxels are then assumed to be isotropic being displayed with the effective elevation angle and using the adjusted surface normals.

REFERENCES:
patent: 4719585 (1988-01-01), Cline et al.
patent: 4821213 (1989-04-01), Cline et al.
patent: 5226113 (1993-07-01), Cline et al.
patent: 5630034 (1997-05-01), Oikawa et al.
patent: 5734384 (1998-03-01), Yanof et al.

Affiliated with

Also associated with

Rating

Fast method of creating 3D surfaces by `stretching cubes` does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fast method of creating 3D surfaces by `stretching cubes`, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fast method of creating 3D surfaces by `stretching cubes` will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2217422