High-quality object-space dynamic ambient occlusion
US11238646B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2019 |
| Grant date | Feb 1, 2022 |
| Priority date | — |
| Expiry date | Jan 9, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63F2300/6646
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods are disclosed for calculating dynamic ambient occlusion (AO) values for character models to yield high-quality approximations of global illumination effects. The approach utilizes a dual component machine-learning model that factorizes dynamic AO computation into a non-linear component, in which visibility is determined by approximating spheres and their casted shadows, and a linear component that leverages a skinning-like algorithm for efficiency. The parameters of both components are trained in a regression against ground-truth AO values. The resulting model accommodates lighting interactions with external objects and can be generalized without requiring carefully constructed training data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.