Many Europeans are now learning to deal with a new currency. But also cash dispensers and cigarette machines must distinguish clearly between euros, the old currencies and counterfeit money. A miniature computer now checks the coins by means of digital image processing.
For users of the new European currency, having adequate safeguards against forgery is a matter of great importance. The paper money incorporates features such as holograms, watermarks, a security thread, and embossed text to guarantee authenticity. The coins have their own distinguishing features: Differently milled edges allow even the blind to recognize the value of each piece. And the elaborate design of the one-euro and two-euro coins, made of two differently colored metal alloys, is attractive to the eye and also makes them more difficult to fake.
Not only cashiers, but also cash, ticket and cigarette machines need to be able to verify the authenticity of the new coins and bank notes, easily and quickly. Many of the present machines are only capable of identifying coins on the basis of simple parameters such as thickness, weight and diameter. They would be much more accurate if they could identify their surface features. The Fraunhofer Institute for Production Systems and Design Technology IPK is currently developing software to identify foreign and counterfeit coins by means of digital image processing.
Dr. Johannes Ehrlenspiel | Fraunhofer-Gesellschaft - Presse
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