Banknote identification method, device, terminal equipment and readable storage medium

Abstract

The invention belongs to the field of financial machines and tools, and particularly relates to a banknote recognition method and device, terminal equipment and a readable storage medium. The method includes: collecting an infrared transmission image of a banknote to be recognized; determining a first area where optically variable ink numbers in the infrared transmission image; expanding the firstarea to be a second area in preset size; respectively calculating an average gray-scale value of a first background area and that of a second background area, wherein the first background area refersto areas not occupied by text, the numbers and patterns in the infrared transmission image, and the second background area refers to areas occupied by the numbers in the second area; if a differencevalue of the average gray-scale value of the first background area and that of the second background area is greater than a first threshold value, judging the banknote to be recognized as an abnormalbanknote. Compared with the prior art, the banknote recognition method has the advantage that accuracy in recognizing altered abnormal banknotes can be increased greatly.

Description

technical field [0001] The invention belongs to the field of financial equipment, and in particular relates to a banknote identification method, device, terminal equipment and readable storage medium. Background technique [0002] Banknote identification is one of the basic functions of various ATM machines. Its main principle is to use various marks on banknotes to judge the authenticity of banknotes, so as to prevent counterfeit currency from entering the market and affecting the normal financial order. [0003] Optically variable inks are also called optically variable inks and chameleons. The printed color blocks present a pair of colors, such as: red-green, green-blue, gold-silver, etc. Looking straight or sideways under white light, as the angle of view of the human eye changes, it presents two different colors. It has strong light-changing characteristics, large color difference changes, and obvious features. It can be identified without any equipment and equipment, a...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a banknote identification method, device, terminal equipment and readable storage medium to solve the problem of low accuracy in the prior art when using optically variable ink numbers to identify abnormal coins

Images