Patent ID: 11941894
Assignee: SEEING MACHINES LIMITED
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 14:
15. A method of controlling a system of two or more infrared light sources for protecting a subject from harmful infrared light exposure, the method including:
illuminating the subject from two or more spaced apart infrared light sources according to a predetermined time sequence;
capturing images of the subject during periods in which the subject is illuminated by one of the two or more infrared light sources;
processing the captured images to determine a brightness measure of the images;
comparing the brightness measure to a predetermined brightness threshold; and
controlling an output power of the infrared light sources based on a comparison of the brightness measure to a predetermined brightness threshold,
wherein controlling the output power of the infrared light sources includes reducing or setting to zero an output illumination intensity of an infrared light source of the two or more infrared light sources that is deemed responsible for a reduction in the brightness measure, when the brightness measure is determined to be below the predetermined brightness threshold;
wherein controlling the output power of the infrared light sources includes, maintaining the output illumination intensity of the two or more infrared light sources when the brightness measure is determined to be above the predetermined brightness threshold;
wherein the brightness measure of the images below the predetermined brightness threshold indicates that the subject is too close to at least one of the two or more infrared light sources or the subject is occluded by an object in the images.