Signal sampling with joint training of learnable priors for sampling operator and decoder
US11126896B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2019 |
| Grant date | Sep 21, 2021 |
| Priority date | — |
| Expiry date | Dec 5, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/44
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of sampling and decoding of a signal of interest x comprising, at a training stage: acquiring a set of training signals {xi}i=1M, providing a sampling operator PΩ and a decoder gθ(.), training operator PΩ on signals {xi}i=1M to obtain a learned sampling operator P{circumflex over (Ω)}; and, at a sampling stage: applying P{circumflex over (Ω)} in a transform domain Ψ to signal x, resulting in observation signal y; applying the decoder gθ(.) to y, to produce an estimate {circumflex over (x)} of signal x to decode and/or, decide about, the signal. Decoder gθ(.) is trained jointly with PΩ on signals {xi}i=1M, to obtain a learned decoder g{circumflex over (θ)}, by jointly determining, during a cost minimization step, sampling parameters Ω and decoding parameters θg according to a cost function, and wherein the step of applying the decoder gθg(.) uses decoding parameters θg, such that estimate {circumflex over (x)} is produced by the learned decoder g{circumflex over (θ)}.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.