Hello,
I am currently working on Multilingual and effective Captcha project for GSOC 2014 just to
encounter the same problem of difficult image I did proposed the solution as an indexing System
for image which will improve overtime by removing non user friendly images from those user
friendly, more detail about this image indexing system is discussed here:
https://www.mediawiki.org/wiki/User:AalekhN/GSoC_proposal_2014#Image_Indexin...
Thank You
Aalekh Nigam
"aalekhN"
On Wed, 02 Apr 2014 00:00:24 +0530 wrote
Has anyone ever collected statistics on which of our captcha images are
most commonly entered incorrectly? I've noticed that some of our images are
quite difficult to read and should probably be removed from rotation. I
could imagine applying a heuristic like:
0-10% wrong: Delete - too easy
10-30% wrong: Keep - just right
30-100% wrong: Delete - too hard
Ryan Kaldari
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