| 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 at least one image sensor, determine a color difference image of a color difference between consecutive images of the plurality of images, determining an area of the color difference image wherein the color difference is greater than a threshold, create an occupancy candidate based on filtering of the determined area if the determined area is less than light change threshold, generate one or more centroids that represent areas of the occupancy candidate that are greater than a second threshold, track the one or more centroids over a period of time, detect occupancy if one or more of the centroids is detected to have moved more than a movement threshold over the period of time. |
