BANKNOTE CLASSIFICATION AND IDENTIFICATION METHOD AND DEVICE BASED ON LAB COLOR SPACE

摘要

A banknote classification and identification method and device based on a Lab color space, which are used for increasing the recognition rate of face values. The method comprises: acquiring 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 Gray R, Gray G and Gray B into gray values Gray a and Gray b in a Lab color space; and comparing the product of Gray a and Gray b and the difference between the absolute value of Gray a and the absolute value of Gray b with a preset formula to obtain the category of the banknote to be detected.