Patent ID: 8754960
Filing Date: 2014-06-17
Classification: G03B,G08B,H04N,H05B,Y02B

Abstract:
1. A lighting control system comprising: a camera capturing at least one image and transmitting an image signal; a processor in signal communication with the camera, wherein the processor is configured to receive the image signal and is further configured to execute an algorithm comprising; extracting, from the image signal, information describing the at least one image; processing the at least one image to determine at least two of: an indicator of natural illumination, an indicator of occupancy, and an indicator of security; and generating a control signal for a plurality of individually-controllable luminaries based on at least one indicator, wherein the plurality of individually-controllable luminaries comprises a plurality of arrangements of one or more lighting units comprising one or more LED-based light sources, wherein the processor additionally processes the at least one image to effect an adjustable per-pixel sensitivity associated with the camera, the processing comprising multiplying the at least one image with a grey-scale mask image on a per-pixel basis: wherein the camera includes a multi-channel color detector; and wherein the processor processing the at least one image to determine an average workplane illuminance in the space related to the at least one image comprises: estimating a spectral power distribution of natural daylight and electric lighting associated with the space, computing a workplane illuminance associated with the space, calculating a multiplier for the workplane illuminance based on the spectral power distribution of the natural daylight and electric lighting associated with the space, and determining the average workplane illuminance in the space by multiplying the workplane illuminance by the multiplier.