Step detection and step length estimation
US8831909B2 · kind B2 · utility
1Cited by
4References
20Claims
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Key dates
| Filing date | Sep 22, 2011 |
| Grant date | Sep 9, 2014 |
| Priority date | — |
| Expiry date | Oct 8, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG16Z99/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Step detection and step length estimation techniques include detecting salient points in sensor data of one or more sensors. A step frequency is estimated based on a time interval between the detected salient points. A step length of the step may then be computed based on a nonlinear combination of the estimated step frequency and a function of the sensor data, and/or a step model. Alternatively, the step length of the step may be computed based on a combination of a nonlinear function of the estimated step frequency and a (linear or nonlinear) function of the sensor data, and/or a step model.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.