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1. (WO2018106415) AUTOMATED CAMERA-BASED OPTICAL ASSESSMENT SYSTEM AND METHOD

Pub. No.:    WO/2018/106415    International Application No.:    PCT/US2017/061486
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Wed Nov 15 00:59:59 CET 2017
IPC: G01N 21/78
G01N 31/22
B01L 3/00
Applicants: BASIL LEAF TECHNOLOGIES, LLC
Inventors: HARRIS, Basil M.
HARRIS, George C.
HARRIS, Constantine F.
HEPLER, Edward L.
CHARRON, Philip J.
HARRIS, Julia D.
SINGER, Andrew D.
Title: AUTOMATED CAMERA-BASED OPTICAL ASSESSMENT SYSTEM AND METHOD
Abstract:
Automated camera-based optical assessment involves color assessment of a physical object using conventional and inexpensive computer hardware such as a smartphone. A specially-configured test card includes a body supporting a reagent pad configured to change to an expected color in response to an enzymatic reaction, and an imaging key adjacent the reagent pad. The imaging key includes color fields including at least one field of the expected color. The hardware captures an image of the test card, and processes the image to identify the reagent pad and color fields, to process a brightness calibration target, to determine color values for the reagent pad and color fields, to calibrate the color values as a function of brightness and/or color by comparison to the brightness and color calibration targets, and to identify a color field most closely matching the reagent pad's color to determine a corresponding test result.