Patent ID: 11882366
Assignee: HILL-ROM SERVICES, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H  A | IPC A  G  H

Claim 14:
15. A contactless patient monitoring system, comprising:
a thermal imager configured to capture thermal image data;
a monochromatic imager configured to capture grayscale image data;
an emitter disposed proximate to at least the monochromatic imager, wherein the emitter is configured to emit light; and
a controller configured to communicate with the thermal imager, the monochromatic imager, and the emitter, wherein the controller is configured to:
determine a center point of a facial region utilizing the thermal image data received from the thermal imager;
map a corresponding central point on the grayscale image data received from the monochromatic imager that coincides with the center point of the facial region of the thermal image data;
determine a region of interest on the grayscale image data utilizing the corresponding central point;
calculate a pixel value within the region of interest;
compare the pixel value with a predetermined pixel value range;
adjust an exposure of the monochromatic imager when a calculated pixel value is outside of the predetermined pixel value range and when the exposure is less than a predetermined maximum exposure value;
adjust an intensity of light emitted by the emitter when the calculated pixel value is outside the predetermined pixel value range and when the exposure is at least equal to the predetermined maximum exposure value; and
determine vital signs information from at least one of the thermal image data and the grayscale image data when the calculated pixel value is within the predetermined pixel value range.