Systems and methods for soft shadowing in 3-D rendering casting multiple rays from ray origins
US11682159B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jun 7, 2021 |
| Grant date | Jun 20, 2023 |
| Priority date | — |
| Expiry date | Jun 7, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T17/005
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Graphics processing systems and methods provide soft shadowing effects into rendered images. This is achieved in a simple manner which can be implemented in real-time without incurring high processing costs so it is suitable for implementation in low-cost devices. Rays are cast from positions on visible surfaces corresponding to pixel positions towards the center of a light, and occlusions of the rays are determined. The results of these determinations are used to apply soft shadows to the rendered pixel values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.