BANKNOTE CLASSIFICATION AND IDENTIFICATION METHOD AND DEVICE BASED ON LAB COLOR SPACE
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United States of America Patent
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Jun 29, 2015
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Jan 22, 2015
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Abstract
A method and a device for banknote classification and recognition based on a Lab color space are provided for improving the denomination recognition rate. The method includes obtaining an RGB image of a banknote to be detected; calculating gray values Gray R, Gray G and Gray B of the RGB image in red (R), green (G) and blue (B) wavebands; converting the gray values Gray R, Gray G and Gray B into gray values Gray a and Gray b in the Lab color space; and substituting a product of Gray a and Gray b and a difference between the absolute value of Gray a and the absolute value of Gray b into preset formulas to determine a category of the banknote to be detected.
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