Hair rendering method and apparatus
US7098910B2 · kind B2 · utility
Inventors
Key dates
| Filing date | May 14, 2003 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Jul 20, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T13/40
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for rendering hair particles includes determining a grid with vertices and voxels bounding the hair particles, determining hair densities for the vertices, smoothing the hair densities, solving a distance function to form a distance field in response to the smooth hair densities, wherein a distance function returns zero at a pre-determined hair particle density, determining a surface normal direction for a hair particle in response to the distance field values, determining a hair illumination value in response to a first illumination source, and determining a shading value for the hair particle using the hair illumination value and the surface normal direction for the hair particle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.