Joint inference determination of interaction using data from weight sensors
US11308442B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2018 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Jun 20, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q20/208
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Sensor data from load cells at a shelf is processed using a first time window to produce first event data describing coarse and sub-events. Location data is determined that indicates where on the shelf weight changes occurred at particular times. Hypotheses are generated using information about where items are stowed, weights of those of items, type of event, and the location data. If confidence values of these hypotheses are below a threshold value, second event data is determined by merging adjacent sub-events. This second event data is then used to determine second hypotheses which are then assessed. A hypothesis with a high confidence value is used to generate interaction data indicative of picks or places of particular quantities of particular types of items from the shelf.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.