Depth sensing using structured illumination
US10136120B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2016 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Sep 1, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/56
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A mobile or portable device comprises an illuminating arrangement comprising a light source, and an amplitude splitting interferometer configured to form an interferogram of light emitted by the light source. The illuminating arrangement is configured to illuminate a target region lying at a distance of at least 10 cm from the device by the interferogram, thereby projecting a structured light pattern onto the target region. The device further comprises an image sensor configured to capture at least one digital image frame of the target region illuminated by the interferogram, and a processing unit configured to obtain image data of the at least one digital image frame, and determine depth of at least one object location in the target region relative to a reference location on the basis of the obtained image data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.