Relightable texture for use in rendering an image
US10223827B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2017 |
| Grant date | Mar 5, 2019 |
| Priority date | — |
| Expiry date | Feb 15, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20028
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Relightable free-viewpoint rendering allows a novel view of a scene to be rendered and relit based on multiple views of the scene from multiple camera viewpoints. An initial texture can be segmented into materials and an initial coarse color estimate is determined for each material. Scene geometry is estimated from the captured views of the scene and is used to scale the initial coarse color estimates relative to each other such that the different materials appear to be lit with a similar irradiance. In this way, a global irradiance function is estimated describing the scene illumination. This provides a starting point for a color estimate and shading estimate extraction. The shading estimate can be used to fit surface normals to the global irradiance function. The set of surface normals and the color estimate are stored for subsequent use to allow relighting of the scene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.