Home     Contact     Projects     Experiments     Circuits     Theory     BLOG     PIC Tutorials     Time for Science     RSS     Terms of services     Privacy policy  
   
 Home      Projects     Experiments     Circuits     Theory     BLOG     PIC Tutorials     Time for Science   


<< Back to INDEX

Did you know that whenever your reCAPTCHA you help Google to digitize books?
posted November 19 2014 18:16.04 by Giorgos Lazaridis




You've seen this picture before, haven't you? Websites and popular platforms use this "Are you a human" detection method to avoid bots from spamming or brute-force passwords. It is a free and quite reliable way and anyone can use it, but how free is it really?

Well, in terms of payment, it is indeed free, but in terms of labor you actually participate as a volunteer to help Google digitize books.

OCR stands for Optical Character Recognition. These are specially designed software engines which take scanned images and try to detect any text inside and then convert it into digital information. But they do not work that well. Letters may not be clear, the ink may faint, the page may become yellowish...

reCAPTCHA was a company which was bought by Google. The goal is to put real human volunteers do the recognition. Which explains why there are 2 words to decipher. One word is the actual "Are you a human" engine. The other word may come from an unrecognized scanned portion of a document or book. This word will appear over an over again to millions of humans (hey, this is Google remember?). The results will then be compared and voila! The text is recognized, partly thanks to you.

Watch this very interesting video which gives more details about reCAPTCHA


[Link: Big Think]
 
Share



You might also like...


AM Radio using 555 timer IC [Project]

4S Universal Preamplifier for 12A*7 Tubes [Project]

The World's Fastest Wi-Fi Makes Google Fiber Look Like Dial-Up [News]

Fiber Optic Chandelier

Simple adjustable dual channel linear power supply [Project]

Nissan's 40kg 400HP Engine [Innovation]

Troubleshoot your car battery with ATtiny [Project]

Make a GSM sim using PIC Microcontroller


<< Back to INDEX



Comments

  Name

  Email (shall not be published)

  Website

Notify me of new posts via email


Write your comments below:
BEFORE you post a comment:You are welcome to comment for corrections and suggestions on this page. But if you have questions please use the forum instead to post it. Thank you.


      

No comment yet...

Be the first to comment on this page!












 Contact     Forum     Projects     Experiments     Circuits     Theory     BLOG     PIC Tutorials     Time for Science     RSS   

Site design: Giorgos Lazaridis
© Copyright 2008
Please read the Terms of services and the Privacy policy