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Cloud images that are recognized as human faces by a face-detection algorithm

ssbkyh.com

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Re: Cloud images that are recognized as human faces by a face-detection algorithm

#31

Post by camillomiller »

camillomiller wrote: post #25
ewindisch wrote: post #13

Far more interesting is their facial-captcha project: http://ssbkyh.com/works/fadtcha/ They assume that a computer will detect faces where humans do not and use such a selection as a captcha. It forces the computer to make a random guess against its matches so there is still a chance of it getting the right answer, but it's an interesting concept.

A lot of artistic value, but not so many practical applications. To bypass this, a bot can simply be tweaked to draw a frame shifted of x and y pixels in any direction after correctly guessing a face. The system will see no match with the non-detectable-by-a-human face and therefore it will think the bot is a human.

I got downvoted, but I don't get why. Is that an incorrect explanation or interpretation? I'd really love to know. thanks.

Re: Cloud images that are recognized as human faces by a face-detection algorithm

#32

Post by bostonpete »

camillomiller wrote: post #31
camillomiller wrote: post #25

Earlier quoted context omitted.

A lot of artistic value, but not so many practical applications. To bypass this, a bot can simply be tweaked to draw a frame shifted of x and y pixels in any direction after correctly guessing a face. The system will see no match with the non-detectable-by-a-human face and therefore it will think the bot is a human.

I got downvoted, but I don't get why. Is that an incorrect explanation or interpretation? I'd really love to know. thanks.

I didn't downvote you but I read your comment a half a dozen times and couldn't make sense of it...

Re: Cloud images that are recognized as human faces by a face-detection algorithm

#33

Post by Houshalter »

tly_alex wrote: post #18

I tested those "cloud face" in the popular face recognition engine rekognition.com. None of them actually got recognized as face. Looks like the face recognition algorithm they uses are pretty smart.

Different algorithms will usually get different false positives. This is why large collections of algorithms generally perform much better than the best individual algorithm. I imagine these are all weird edge cases as it is.

Re: Cloud images that are recognized as human faces by a face-detection algorithm

#34

Post by camillomiller »

bostonpete wrote: post #32
camillomiller wrote: post #31

Earlier quoted context omitted.

I got downvoted, but I don't get why. Is that an incorrect explanation or interpretation? I'd really love to know. thanks.

I didn't downvote you but I read your comment a half a dozen times and couldn't make sense of it...

I was explaining why, in my opinion, the facial captcha project isn't very functional, at least as it is described on the artist's website. It was an explanation of the simplest method a bot could use to game that system.

Re: Cloud images that are recognized as human faces by a face-detection algorithm

#35

Post by NoMoreNicksLeft »

TheOtherHobbes wrote: post #30
NoMoreNicksLeft wrote: post #11

Earlier quoted context omitted.

No. I suggest giving the thing noise . Give it lots of noise. Let it find its own face. Let it find several, and let it score the ones it thinks are the best. Then maybe toss those at another NN that's been trained on cartoon faces. Let it modify this noise-face so that it's more cartoonish. And just keep iterating through it like that. > it has somehow created an idea on its own. Can we please grow up. Creative peop…

There's an entire branch of computer science devoted to studying creativity and computation. Google Prof Geraint Wiggins for some examples. His ideas about this are a bit more thoughtful and insightful than 'exploring a finite ideaspace.'

If he wants to make a career out of something so simple, I'm not going to stop him. Why anyone would listen to him, that's another thing entirely. Perhaps you like the sound of bullshit.

Re: Cloud images that are recognized as human faces by a face-detection algorithm

#37

Post by Thos »

camillomiller wrote: post #25
ewindisch wrote: post #13

Far more interesting is their facial-captcha project: http://ssbkyh.com/works/fadtcha/ They assume that a computer will detect faces where humans do not and use such a selection as a captcha. It forces the computer to make a random guess against its matches so there is still a chance of it getting the right answer, but it's an interesting concept.

A lot of artistic value, but not so many practical applications. To bypass this, a bot can simply be tweaked to draw a frame shifted of x and y pixels in any direction after correctly guessing a face. The system will see no match with the non-detectable-by-a-human face and therefore it will think the bot is a human.

It's a joke on using a Captcha to detect a human user - this is the opposite, a way of only allowing robots to access information, and to keep away humans.

Re: Cloud images that are recognized as human faces by a face-detection algorithm

#38

Post by Huggernaut »

camillomiller wrote: post #25
ewindisch wrote: post #13

Far more interesting is their facial-captcha project: http://ssbkyh.com/works/fadtcha/ They assume that a computer will detect faces where humans do not and use such a selection as a captcha. It forces the computer to make a random guess against its matches so there is still a chance of it getting the right answer, but it's an interesting concept.

A lot of artistic value, but not so many practical applications. To bypass this, a bot can simply be tweaked to draw a frame shifted of x and y pixels in any direction after correctly guessing a face. The system will see no match with the non-detectable-by-a-human face and therefore it will think the bot is a human.

I agree. It seems this could be used to determine only whether the testee is not-human. It's trivial like you say, to trick the test into believing it is human by not finding a face.

At first glance I thought the test was only to determine whether the testee is definitely not-human but the description actually implies categorising into computer and not-computer:

"FADTCHA(FAce Detection Turing test to tell Computers and Humans Apart) is a type of challenge-response test to determine whether the response is generated by a computer. The test involves asking a testee to find* a face in a presented image and draw a square region of the face. If one correctly finds a face, it can be presumed that it is a computer, otherwise it will be regarded as a non-computer."

Re: Cloud images that are recognized as human faces by a face-detection algorithm

#39

Post by camillomiller »

Huggernaut wrote: post #38
camillomiller wrote: post #25

Earlier quoted context omitted.

A lot of artistic value, but not so many practical applications. To bypass this, a bot can simply be tweaked to draw a frame shifted of x and y pixels in any direction after correctly guessing a face. The system will see no match with the non-detectable-by-a-human face and therefore it will think the bot is a human.

I agree. It seems this could be used to determine only whether the testee is not-human. It's trivial like you say, to trick the test into believing it is human by not finding a face. At first glance I thought the test was only to determine whether the testee is definitely not-human but the description actually implies categorising into computer and not-computer: "FADTCHA(FAce Detection Turing test to tell Computers a…

Indeed. Great artistic value, low practical value. Which is not a negative take, of course.

Re: Cloud images that are recognized as human faces by a face-detection algorithm

#40

Post by twoodfin »

ewindisch wrote: post #13

Far more interesting is their facial-captcha project: http://ssbkyh.com/works/fadtcha/ They assume that a computer will detect faces where humans do not and use such a selection as a captcha. It forces the computer to make a random guess against its matches so there is still a chance of it getting the right answer, but it's an interesting concept.

Interesting, but my iPhone won't have any luck getting into computer-only clubs: It successfully detects the human face in this image[1] but none of the dot patterns.

[1] http://cdn.ssbkyh.com/works/fadtcha/ssbkyh_fadtcha_05.jpg

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