money, money, money team 6 the team dana damian scientist institute: politehnica university of...
TRANSCRIPT
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Money, Money, MoneyMoney, Money, Money
TEAM 6
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The TEAMDana Damian ScientistInstitute: Politehnica University of TimisoaraCountry: Romania
Krisztina Dombi DocumenterInstitute: University of SzegedCountry: Hungary
Levente Sajó ProgrammerInstitute: University of Debrecen Country: Hungary
Zoltán Horváth GopherInstitute: Pannon University Country: Hungary
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The Problem
The Problem: Counting money.
Input: Photo of coins (Euro\Cent perspective view,non-uniform lighting, eventual partial covering)
Task: Recognize the coins and count the total sum.
Output: The sum, and also the recognition statistics(accuracy / false positive rate etc) of the implemented method.
Difficulty: Medium
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The Problem: Counting money.
Input: Photo of coins (forint with perspective view, without covering)(Let’s say we have a lot…)
Task: Recognize the coins and count the total sum.
Output: The sum, and also the recognition statistics(accuracy / false positive rate etc) of the implemented method.
Our Problem
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Motivation
• In business transactions, to enable computers to recognize coins and other different forms of currency has become an essential process.
• If computers are able to do the recognition, all monetary trades and transactions will be much easier.
• Our scope is limited on recognizing only the Hungarian coins ( head OR tail ) (1F, 2F, 10F, 20F, 50F, 100F).
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Monetary automates
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Handy coin counter
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Approach• The application is suitable for an architecture
of a coin counter system that incorporates a steady camera which monitories coins passing beneath (maybe on a belt )
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Catalogue of Hungarian denomination
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Theoretical background of Hough transformation
• A transformation that maps a point in a Cartesian space onto a 2D space of points, called the Hough Space
sincos yx
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• Extension of the classical HT• Analytical function of a circle leads to a mapping of
each point (x, y) from the image onto a 3D Hough Space parameterized according to (a, b, r) tuple, where
– (a, b) center of the circle– r radius of the center
Points satisfying the equation are mapped into the accumulator according to the circle they belong to
Circular HT
222 )()( rbyax
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Preprocessing
Enhance ContrastSharpen
Gaussian BlurSharpen
Find EdgesThresholdFill HolesOutlineInvert
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Hungarian coin counter system
Input image:
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Enhance Contrast
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Sharpen
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Gaussian Blur
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Edge Detector
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Threshold
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Fill Holes
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Outline
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Invert binary
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Circular Hough Transform
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Detected coins
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Center points and radius
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Result
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Core Idea
• Having a picture for training purposes, the system designs a coin table in which it stores the size of each coin
• Further recognition is based on comparison with the coin table
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Main issues
• Shadows can enlarge the image of a coin, thus increasing its radius
• Different condition of illumination can generate an edge map with lack of information
• Coins are very close to each other
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Limitations
• A priori knowledge of the # coins
• Dependence on the quality of edge detector
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Future Plans
• Go to the Bajor söröző
• Eat good and drink a lot
• Go back to the dormitory
• Go home with lots of new experiences, new remembrance
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Other Works• Coin Detector
CS7495/4495 Term ProjectDong-Shin Kim(gtg901p) CS7495Young Gyun Yun(gte257z) CS4495You-Kyung Cha(gte440y) CS4495
• Dagobert – A New Coin Recognition and Sorting System
Michael N¨olle1, Harald Penz2, Michael Rubik2,Konrad Mayer2, Igor Holl¨ander2, Reinhard Granec2ARC Seibersdorf research GmbH1Video- and Safety Technology , 2High Performance Image ProcessingA-2444 Seibersdorf
• Design and Evaluation of Neural Networks for Coin Recognition by Using GA and SAYasue Mitsukura*, Minoru Fukumi* and Norio Akamatsu** Department of Information Science & Intelligent Systems, Faculty of EngineeringUniversity of Tokushima 2-1, Minami-josanjima, Tokushima, 770-8506 JAPAN
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Thanks for your attention.
Questions? …