Methods and systems for time-encoded multiplexed imaging
US10425598B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2017 |
| Grant date | Sep 24, 2019 |
| Priority date | — |
| Expiry date | Jun 20, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An imaging system uses a dynamically varying coded mask, such as a spatial light modulator (SLM), to time-encode multiple degrees of freedom of a light field in parallel and a detector and processor to decode the encoded information. The encoded information may be decoded at the pixel level (e.g., with independently modulated counters in each pixel), on a read-out integrated circuit coupled to the detector, or on a circuit external to the detector. For example, the SLM, detector, and processor may create modulation sequences representing a system of linear equations where the variables represent a degree of freedom of the light field that is being sensed. If the number of equations and variables form a fully determined or overdetermined system of linear equations, the system of linear equations' solution can be determined through a matrix inverse. Otherwise, a solution can be determined with compressed sensing reconstruction techniques with the constraint that the signal is sparse in the frequency domain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.