Title:
Detection of occupancy
Document Type and Number:
Japanese Patent JP6232165
Kind Code:
B2
Abstract:
There is provided an apparatus for detecting when a subject has exited an item of furniture which has an upper side for supporting a subject and an underside opposite to the upper side, and comprises an overhanging component that extends from the underside toward a surface on which the item of furniture is resting. The apparatus comprises a light source to illuminate an edge-feature associated with a distal edge of the overhanging component, to create a shadow of the edge-feature on a region of the surface. The apparatus further comprises a camera arranged to capture sequential images of the region of the surface; and a processing unit. The processing unit is arranged to receive the images; detect an edge of the shadow in each of the received images, detect, in the received images, the appearance of a feature contiguous with the shadow edge; monitor how a detected feature changes over a time period; determine whether a change to the detected feature satisfies at least one predefined criterion for a subject exit event; and output a signal based on the determining.
Inventors:
Rock, Mukulu Julius
Kirenko, Ihol Orehovic
Kirenko, Ihol Orehovic
Application Number:
JP2017510388A
Publication Date:
November 15, 2017
Filing Date:
August 10, 2016
Export Citation:
Assignee:
KONINKLIJKE PHILIPS N.V.
International Classes:
A61B5/11; G06T7/20; G06V10/143
Domestic Patent References:
| JP2015530890A | ||||
| JP2014166197A | ||||
| JP2009297148A |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Shinsuke Onuki
Tadahiko Ito
Shinsuke Onuki
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