US 12,067,750 B2
Methods and systems for establishing accurate phenotype metrics
Arun Vemury, North Bethesda, MD (US); Yevgeniy Sirotin, Severna Park, MD (US); John Howard, Bethesda, MD (US); and Jerry Tipton, Severn, MD (US)
Assigned to The Government of the United States of America, as represented by the Secretary of Homeland Security, Washington, DC (US)
Filed by The Government of the United States of America, as represented by the Secretary of Homeland Security, Washington, DC (US)
Filed on Oct. 19, 2023, as Appl. No. 18/381,840.
Claims priority of provisional application 63/419,980, filed on Oct. 27, 2022.
Prior Publication US 2024/0144535 A1, May 2, 2024
Int. Cl. G06T 7/90 (2017.01); G06T 7/80 (2017.01)
CPC G06T 7/90 (2017.01) [G06T 7/80 (2017.01); G06T 2207/10024 (2013.01); G06T 2207/30201 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for identifying a target user comprising:
a camera for capturing images of a plurality of users; the camera configured to assign an identifier to each image creating an association between a user and an image;
a computer configured to:
measuring lightness, chromaticity, and hue values of skin tone in the images;
store lightness, chromaticity, and hue values for the images in a data structure;
determine data for a plurality of skin color calibration panels, the skin color calibration panels composed of the measured lightness, chromaticity, and hue associated with that identifier;
determine data for a plurality of non-skin color calibration panels, the non-skin color calibration panels composed of the measured lightness, chromaticity, and hue associated with that identifier;
the skin color calibration panels having a lightness, chromaticity, and hue consistent with a lightness, chromaticity, and hue of human skin;
the non-skin color calibration panels not having a lightness, chromaticity, and hue consistent with a lightness, chromaticity, and hue of human skin;
organize the skin color calibration panels and non-skin color calibration panels into a grid;
export the grid into a tangible format; the tangible format comprising a printed colorchecker;
a color measuring tool configured to measure lightness, chromaticity, and hue values of the panels in the printed colorchecker so that the lightness, chromaticity, and hue values are known to the system;
a second camera configured to capture an image of the colorchecker in a room; the room having a luminance and a capture position;
the second camera comprising a color calibration logic configured to generate a color corrected image;
a user identification logic configured to:
perform image matching using the color corrected image against other stored images in a database;
obtain user biographic data from the database by matching a stored image in the database with the color corrected image;
send a signal to an access control device;
the access control device configured to grant access to the target user to a restricted location, restricted privileges, restricted files, or a restricted item.