Graphical ToF phase unwrapping
US11748900B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2021 |
| Grant date | Sep 5, 2023 |
| Priority date | — |
| Expiry date | Jun 19, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20041
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
One example provides a computing system comprising a depth sensor comprising a plurality of pixels, and a storage machine holding instructions executable by a logic machine to, for each pixel, make K phase measurements to form a set of noisy phase measurements, determine a location at which a projection line that passes through the set of noisy phase measurements in a K-dimensional phase space passes through a lower dimensional plane, the projection line being parallel to a noise free phase evolution line, compare the location to a plurality of independent terms of a predetermined matrix of points in the lower dimensional plane, locate a corresponding set of noiseless phase orders by using a selected set of independent terms to reference a look-up table, determine a distance value for the pixel based upon the corresponding set of noiseless phase orders, and output the distance value for the pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.