Live data from Hacker News

AI Startup Says It Has Defeated Captchas

technologyreview.com

21–30 of 82 posts

Re: AI Startup Says It Has Defeated Captchas

#21
post #20
post #17

> or let you know how many calories you’re about to eat by looking at your lunch. I have previously told some people that this is the holy grail of dieting apps. The difference in ease of use between entering all of the items in your meal, one by one, and just taking a photo, would be a game changer. Of course, this is just a throwaway example in the article so they probably haven't done any of the work that would be…

The hard part about this problem is getting the scale and thus volume of the objects right. How big is that bowl holding your cereal?

And is that Coke or Diet Coke?

Re: AI Startup Says It Has Defeated Captchas

#22
post #20
post #17

> or let you know how many calories you’re about to eat by looking at your lunch. I have previously told some people that this is the holy grail of dieting apps. The difference in ease of use between entering all of the items in your meal, one by one, and just taking a photo, would be a game changer. Of course, this is just a throwaway example in the article so they probably haven't done any of the work that would be…

The hard part about this problem is getting the scale and thus volume of the objects right. How big is that bowl holding your cereal?

panorama-like shot + obligatory 'token' in the shot should solve that, right?

Re: AI Startup Says It Has Defeated Captchas

#25
From the article:

    "Captcha" stands for "completely automated
    Turing test to tell computers and humans apart."
No it doesn't - where's the word that starts with "P"?

According to Wikipedia "CAPTCHA" is an acronym for "Completely Automated Public Turing test to tell Computers and Humans Apart" (and is apparently a trademark of Carnegie Mellon University, which I didn't know.) Even that's a really bad backronym.

Google's reCAPTCHA page[0] says the same thing, and even attributes it:

    The term CAPTCHA (for Completely Automated Public Turing Test
    To Tell Computers and Humans Apart) was coined in 2000 by Luis
    von Ahn, Manuel Blum, Nicholas Hopper and John Langford of
    Carnegie Mellon University.
That should then be CAPTTTTCAHA. Doesn't quite have the same ring to it.

Given the term CAPTCHA it seems that a "better" (by some definition) backronym would be:

    Completely Automated Process to Tell Computers and Humans Apart.
At least with that one only the particles "to" and "and" are left out of the abbreviation.

More on topic though, I long for the day when off-the-shelf systems that even script-kiddies can use are able to break CAPTCHAs with ease - that's when they'll finally die. TicketMaster gave up on using the standard CAPTCHAs earlier this year[1], and I'd love to see something better replace it.

[0] http://www.google.com/recaptcha/captcha

[1] http://www.bbc.co.uk/news/technology-21260007

Re: AI Startup Says It Has Defeated Captchas

#29
It'd be interesting to know more about this approach. In particular:

> One big difference in Vicarious’s approach, says cofounder Dileep George, is that its system can be trained with moving images rather than only static ones.

Does this imply they teach it how the shapes of numbers change, for easier detection?

Post reply on HN