Monday, 9 November 2009

Using CAPTCHAs for free transcription

Luis von Ahn and colleagues at Carnegie Mellon University are using CAPTCHAs to decipher words that have stumped optical readers trying to digitise old books.

Now transcribing 10m words a day, equivalent of 150,000 books a year, equivalent to 37,500 full-time workers.

'The Power of Unwitting Workers', HBR Oct 09

No comments: