IMAGE DETECTION AND PROCESSING FOR BUILDING CONTROL

摘要

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.

主权项

1. An apparatus, comprising:
at least one image sensor; a controller, wherein at least one of the controller, or an external controller electronically connected to the controller are 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; anddetect occupancy if one or more of the occupancy candidates is detected to have moved more than a movement threshold over the period of time.