Device and method for estimating a glossy part of radiation
US10607404B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2016 |
| Grant date | Mar 31, 2020 |
| Priority date | — |
| Expiry date | Oct 29, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/55
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a glossy part of radiation is estimated coming from a surface illuminated by area light source(s) having source surface(s) (A) bounded by edge curves, by determining integrand function(s) representative of that glossy part. The latter corresponding to an integration of the integrand function along the edge curves. In this respect, the integrand function(s) is/are approximated by means of peak-shape function(s) having a known antiderivative over the edge curves, and the glossy part is computed from analytical expressions associated with integrations of the peak-shape function(s) along the edge curves. Such invention can offer efficient and accurate computation for specular part of reflection as well as glossy transmission, and is notably relevant to real-time rendering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.