US 11,836,949 B2
Method for evaluating a color indicator
Benjamin Landenberger, Freiburg (DE); Janosch Kneer, Freiburg (DE); and Martin Zubler, Lenzkirch (DE)
Assigned to TESTO SE & CO. KGAA, Lenzkirch (DE)
Filed by TESTO SE & CO. KGAA, Lenzkirch (DE)
Filed on Sep. 1, 2020, as Appl. No. 17/008,770.
Claims priority of application No. 102019123474.3 (DE), filed on Sep. 2, 2019.
Prior Publication US 2021/0065403 A1, Mar. 4, 2021
Int. Cl. G06T 7/90 (2017.01); G06N 20/00 (2019.01); G01N 21/78 (2006.01); G01N 31/22 (2006.01); G01N 33/03 (2006.01); H04N 23/88 (2023.01)
CPC G06T 7/90 (2017.01) [G06N 20/00 (2019.01); H04N 23/88 (2023.01); G06T 2207/20081 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for determining the measurement value of a measurement quantity of a substance using a color indicator, the color indicator having at least one indicator field having previously been brought into contact with the substance, wherein the color indicator is a test strip with at least one indicator field, wherein the color indicator and a color reference are visually sensed, the color reference having at least two reference fields of different colors, that an intermediate value of the measurement quantity is obtained with computer assistance based on the captured color values of the reference fields and the indicator field, and that the measurement value of the substance is obtained from this intermediate value;
wherein the intermediate value is obtained by interpolation of the indicator field color value within the color scale and the associated end value.