Relightable texture for use in rendering an image
US9418473B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2013 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Mar 1, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A model of a scene of an image (e.g. a frame of a video sequence) is generated from one or more views of the scene captured from one or more different camera viewpoints. An initial texture for applying to the model is derived from the one or more views of the scene. The initial texture is separated into a lighting estimate and a color estimate, which may be orthogonal and which may be processed independently. The lighting estimate is filtered with a high-pass filter to thereby determine shadow regions of the scene which are regions of detailed shadow which are likely to be caused by ambient occlusion in the scene and which are therefore retained when the texture is relit for rendering the image. A shadow-detail estimate (or “dark map”) is provided which indicates one or more shadow regions of the texture which are to remain in shadow when the image is rendered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.