Posture estimation device, posture estimation method, and storage medium
US11678817B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 22, 2020 |
| Grant date | Jun 20, 2023 |
| Priority date | — |
| Expiry date | Oct 31, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/0219
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A posture estimation device includes an acquisition part acquires information of angular velocities and accelerations from a plurality of sensors that detects angular velocities and accelerations and that are attached to a plurality of locations on an estimation object, a conversion part that converts information acquired by the acquisition part into information of a standard coordinate system from a sensor coordinate system, an integrating part that calculates an orientation of a reference area of the estimation object as a part of a posture of the estimation object by integrating the converted angular velocities, and a correction part, assuming a representative plane passing through a reference area included in the estimation object, corrects the converted angular velocities of the reference area so that a normal line of the representative plane and an orientation of the reference area calculated by the integrating part approaches to directions that are perpendicular to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.