Fast general multipath correction in time-of-flight imaging
US9542749B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2014 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | Mar 21, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20076
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Fast general multipath correction in time of flight imaging is described, for example, to obtain accurate depth maps at frame rate from a time of flight camera. In various embodiments accurate depth maps are calculated by looking up corrected depth values stored in a look up table. In various embodiments the corrected depth values are highly accurate as they take into account three or more possible light ray paths between the camera and a surface in a scene being imaged. In an example accurate depth maps are computed at a frame rate of a time of flight camera. In an example accurate depth maps are computed in less than 30 milliseconds for an image having over 200,000 pixels using a standard CPU.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.