Method and apparatus for performing and quantifying color changes induced by specific concentrations of biological analytes in an automatically calibrated environment

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United States of America Patent

PATENT NO 9311520
SERIAL NO

14419939

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Abstract

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Methods and electronic devices for performing color-based reaction testing of biological materials. The method includes capturing and interpreting digital images of an unexposed and later exposed paddle at various delay times within an automatically calibrated environment. The test paddle includes a unique identification mechanism (UID), a Reference Color Bar (RCB) providing samples of standardized colors for image color calibration, compensation and corrections, and several test-specific sequences of Chemical Test Pads (CTP). The method further includes locating the paddle in the image, extracting the UID and validating the paddle, extracting the RCB and locating the plurality of CTP in each image. The method further reduces image noise in the CTP and calibrates the image automatically according to lighting measurements performed on the RCB. To determine test results, the method further determines several distances between the CTP and its possible trajectory in the color space described by the Manufacturer Interpretation Color Chart.

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Patent Owner(s)

  • SCANADU INCORPORATED

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Burg, Bernard Menlo Park, US 57 1198
De, Brouwer Walter Los Altos, US 30 944
Rowe, Aaron Alexander San Francisco, US 16 505
Smart, Anthony Costa Mesa, US 12 624
Zizi, Martin Enines, BE 39 750

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