FIELD: control devices.
SUBSTANCE: invention relates to means for classifying and identifying banknotes based on the color space Lab. Method comprises: obtaining an RGB image of a banknote to be detected; calculating gray values Gray R, Gray G and Gray B RGB-images in the bands of red (R), green (G) and blue (B) colors; transformation Gray R, Gray G and Gray B in gray values Gray a and Gray b in the color space Lab and the comparison of the product Gray a and Gray b and the difference between the absolute value of Gray a and an absolute value of Gray b with a predetermined formula to obtain the category of the banknote to be detected.
EFFECT: technical result consists in providing higher recognition coefficient of the nominal values of banknotes.
10 cl, 3 dwg
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