Patent ID: 9483895
Filing Date: 2016-11-01
CPC Classification: G06K,G07D

Claim Text:
1. A paper money identification method, comprising: obtaining entire grayscale image data of a paper money to be tested; dividing the entire grayscale image of the paper money to be tested into a plurality of areas, and calculating a feature value of the image data of each area respectively; comparing the feature value of each area with the feature value of a corresponding area in a paper money template to judge whether two compared areas are matched, wherein the two compared areas are judged to be unmatched if a difference between the feature values of the two compared areas is greater than a first preset threshold, otherwise the two compared areas are judged to be matched; counting the number of unmatched areas of the paper money to be tested; judging whether the number of the unmatched areas of the paper money to be tested is greater than a second preset threshold; and determining that the paper money to be tested is altered money when the number of the unmatched areas of the paper money to be tested is judged to be greater than the second preset threshold, wherein, for each area, the feature value of the image data of the area is calculated by: