Single frequency time of flight de-aliasing
US9602807B2 · kind B2 · utility
65Cited by
5References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 19, 2012 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Jul 3, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/4915
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method are disclosed for determining a depth map using TOF with low power consumption. In order to disambiguate, or de-alias, the returned distance(s) for a given phase shift, the system may emit n different frequencies of light over n successive image frames. After n frames of data are collected, the distances may be correlated by a variety of methodologies to determine a single distance to the object as measured over n image frames. As one frequency may be emitted per image frame, the depth map may be developed while consuming low power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.