Rendering based generation of occlusion culling models
US10713844B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2015 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Dec 18, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2210/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and image processing apparatus for creating simplified representations of an existing virtual 3D model for use in occlusion culling is provided. A visual hull construction is performed on the existing virtual 3D model using an approximate voxel volume consisting of a plurality of voxels. A set of projections from a plurality of viewing angles provide a visual hull of the existing 3D model. The volumetric size of the visual hull of the existing 3D model is increased to envelop the existing virtual 3D model to provide the visual hull as an occludee model, and the volumetric size of the visual hull of the existing 3D model is decreased to be enveloped by the existing virtual 3D model to provide the visual hull as an occluder model. The occludee model and the occluder model are used during runtime in a 3D virtual environment for occlusion culling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.