Systems and methods for occupancy monitoring
US10410062B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2016 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | Jan 25, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/60
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus comprises a projector for fixed attachment to a moveable part of an item of furniture, which changes its position and/or orientation relative to a surface in response to a movement of a subject occupying the item of furniture. The projector is arranged to project a pattern onto the surface. At least one camera is arranged to capture sequential images of the surface. A processing unit is arranged to: receive the images from the at least one camera; detect the projected pattern in the received images; detect a change to at least one feature of the projected pattern in the received images; determine whether the detected change satisfies at least one predefined criterion for a subject exit event; and output a signal based on the determining.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.