Motion discrimination method and device using a hidden markov model
US5808219A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 1, 1996 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Nov 1, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2250/311
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A motion discrimination method or a motion discrimination device is provided to discriminate a kind of a motion, i.e., one of conducting operations which are made by a human operator by swinging a baton to conduct music of a certain time (e.g., quadruple time). Herein, sensors are provided to detect the motion, made by the human operator, to produce detection values. The detection values are converted to operation labels, which are assembled together in a certain time unit (e.g., 10 ms) to form label series. In addition, there are provided a plurality of Hidden Markov Models, each of which is constructed to learn label series corresponding to a specific motion in advance. Calculations are performed to produce probabilities that multiple Hidden Markov Models respectively output the label series corresponding to the detected motion. Then, a kind of the motion is discriminated on the basis of result of the calculations. Further, a beat label representing the discriminated kind of the motion is inserted into the label series. Herein, the discrimination is made only when a highest one of the probabilities exceeds a certain threshold value so that designation of a beat is detected. Incid…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.