Coin Captcha

Comments

• STONE Posts: 15,275 ✭

  July 15, 2014 12:21AM

  I think it works. But how would you write the answer?
  
  24
  0.24
  $0.24
  24c

  0
• Tibor Posts: 3,696 ✭✭✭✭✭

  July 15, 2014 12:41AM

  
  Do you add the value of the coins or the
  number of coins?

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• phnatacc Posts: 367 ✭✭

  July 15, 2014 1:29AM

  *captcha

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• SmEagle1795 Posts: 2,200 ✭✭✭✭✭

  July 15, 2014 4:03AM

  
  
  << <i>*captcha >>
  
  
  
  +1 - "Completely Automated Public Turing test to tell Computers and Humans Apart"

  Learn about our world's shared history told through the first millennium of coinage: Colosseo Collection

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• stealer Posts: 4,039 ✭✭✭✭

  July 15, 2014 4:20AM

  I think it would be much easier for a computer to learn how to discern between denominations of currency than for it to recognize the mutilated letters/numbers featured in the most popular captchas. I think one way to better your system would be to feature the coins with some degree of distortion (randomly generated based off of multiple basic images of the coins).

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• airplanenut Posts: 22,433 ✭✭✭✭✭

  July 15, 2014 4:24AM

  
  
  << <i>I think it works. But how would you write the answer?
  
  24
  0.24
  $0.24
  24c >>
  
  You forgot one: 6

  JK Coin Photography - eBay Consignments | High Quality Photos | LOW Prices | 20% of Consignment Proceeds Go to Pancreatic Cancer Research

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• cladking Posts: 28,819 ✭✭✭✭✭

  July 15, 2014 5:02AM

  I see 12078 but then nothing ever works for me.

  tempus fugit extra philosophiam.

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• messydesk Posts: 20,369 ✭✭✭✭✭

  July 15, 2014 6:10AM

  
  
  << <i>I think it would be much easier for a computer to learn how to discern between denominations of currency ... >>
  
  
  Yup. Better use nothing but Seated Liberty obverses, 5c through $1 (pre-1860 for 5c and 10c). Only astute coin collectors would be able to get the denominations right, and if they couldn't, do you really want to hear from them anyway?

  John
  Keeper of the VAM Catalog • Professional Coin Imaging • Prime Number Set • World Coins in Early America • British Trade Dollars • Variety Attribution

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• SmEagle1795 Posts: 2,200 ✭✭✭✭✭

  July 15, 2014 6:13AM

  
  
  << <i>I think it would be much easier for a computer to learn how to discern between denominations of currency than for it to recognize the mutilated letters/numbers featured in the most popular captchas. >>
  
  
  
  Software is getting rather good at beating captchas. It would need to be trained to interpret coins which would be relatively trivial but probably still not worth the effort if only used in a few places. Security by obscurity

  Learn about our world's shared history told through the first millennium of coinage: Colosseo Collection

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• stealer Posts: 4,039 ✭✭✭✭

  July 15, 2014 6:23AM

  
  
  << <i>Security by obscurity >>
  
  
  Very true, I like that.

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