The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 2016
Filed:
Jun. 10, 2015
Enlighted, Inc., Sunnyvale, CA (US);
Peter Dominic Kovesi, Shenton Park, AU;
Evan Danny Petridis, South Fremantle, AU;
Tanuj Mohan, Mountain View, CA (US);
enLighted, Inc., Sunnyvale, CA (US);
Abstract
Occupancy detection for building environmental control is disclosed. One apparatus includes at least one image sensor and a controller, wherein the controller is operative to obtain a plurality of images from the image sensor, determine a color difference image of a color difference between consecutive images, determine areas of the color difference image wherein the color difference is greater than a threshold, calculate a total change area as an aggregate area of the determined areas, create a list of occupancy candidates based on filtering of the determined areas if the total change area is less than a light change threshold, wherein each occupancy candidate is represented by a connected component, track the one or more occupancy candidates over a period of time, and detect occupancy if one or more of the occupancy candidates is detected to have moved more than a movement threshold over the period of time.