RGB Color Sensors for Occupant Detection: An Alternative to PIR Sensors
- Resource Type
- Authors
- Robert F. Karlicek; Tianna-Kaye Woodstock
- Source
- IEEE Sensors Journal. 20:12364-12373
- Subject
- Spectral power distribution
business.industry
Computer science
010401 analytical chemistry
01 natural sciences
Reflectivity
0104 chemical sciences
Spectral absorption
Background color
RGB color model
Computer vision
Ultrasonic sensor
Artificial intelligence
Electrical and Electronic Engineering
business
Instrumentation
- Language
- ISSN
- 2379-9153
1530-437X
RGB color sensors are examined as an economical replacement for non-lighting based occupancy sensors such as PIR sensors and ultrasonic sensors. RGB color sensors are inexpensive and able to accurately detect and track occupants in an illuminated space by monitoring color shifts from background color distribution caused by occupants. By examining the temporal dependence of color shifts caused by small occupant movements, it is possible to avoid false occupancy/vacancy detections associated with other sensor types. Additionally, RGB color sensors provide information about the spectral reflectance of the illuminated space and this information can be used to compensate for spectral absorption properties of surfaces that alter the perceived emitted spectral power distribution (SPD) from the lighting. These changes may impact occupant perception and circadian performance.