Active compensation for phase alignment errors in time-of-flight cameras
US10054675B2 · kind B2 · utility
2Cited by
1References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 6, 2015 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Oct 11, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30232
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods, apparatuses, and systems can be provided to implement active feedback to electrically sense or monitor the illumination and shutter pulses and adjust them actively to maintain the desired phase relationship/difference between the pulses. By maintaining the desired phase difference, the distance calculation can be made more accurate, even when conditions of the time-of-flight camera varies (e.g., temperature, aging, etc.). Advantageously, active compensation can correct for errors ‘on-the-fly’, eliminating detailed characterization and manual adjustment during operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.