Estimation device, living body count estimation device, estimation method, and recording medium
US11163057B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2019 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | Jun 9, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An estimation device includes: a living body information extraction unit that extracts living body information which is a component corresponding to one or more living bodies in a space; an eigenvector calculation unit that calculates one or more eigenvectors of a living body correlation matrix obtained from the living body information; a first position estimation unit that estimates, using the living body correlation matrix, positions of the one or more living bodies and at least one false image, according to a predetermined position estimation method; a second steering vector output unit that extracts, from first steering vectors stored in a storage, and outputs as second steering vectors, first steering vectors corresponding to the positions estimated; and a second position estimation unit that estimates at least one of the position and the number of the one or more living bodies, using the one or more eigenvectors and the second steering vectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.