Method for performing a noise removal operation on a signal acquired by a sensor and system therefrom
US10926351B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2018 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | Sep 18, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30152
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for performing a noise removal operation includes decomposing an acquired signal considered as one dimensional series. A trajectory matrix is constructed, transforming the trajectory matrix in a form to which single value decomposition is applicable. A single value decomposition is done on the transformed matrix computing eigenvalues and eigenvectors of the matrix. A one dimensional series is reconstructed, corresponding to the denoised signal. After the single value decomposition operation is provided, a single value decomposition is applied sequentially starting from a given window value. For each iteration, the root mean square value is calculated between a current and previous eigenvalue, calculating a minimum and its position of said root mean square value. The iterations are halted if the minimum is lower than a determined threshold value, otherwise increasing the window value and returning to the operation of decomposition of the acquired signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.