[quote=NewScientist]
It doesn't take much imagination to guess what a porn video sounds like. It's more impressive, however, when it's a computer that's doing the guessing.
Automatic image-analysis systems are already used to catch unwanted pornography before it reaches a computer monitor. But they often struggle to distinguish between indecent imagery and more innocuous pictures with large flesh-coloured regions, such as a person in swimwear or a close-up face. Analysing the audio for a "sexual scream or moan" could solve the problem, say electrical engineers MyungJong Kim and Hoirin Kim at the Korea Advanced Institute of Science and Technology in Daejeon, South Korea.
The pair used a signal-processing technique called the Radon transform to create spectrograms of a variety of audio clips, each just half a second long. They found that speech signals are normally low-pitched and musical clips have a wide range of pitches; both vary only gradually over time. In contrast, pornographic sounds tend to be higher-pitched, change quickly and also periodically repeat.
These characteristics allow software to distinguish smutty audio from other content. The researchers used a statistical model to classify sounds as pornographic or non-pornographic according to their spectral characteristics, and tested it on audio taken from online videos. The non-sexual audio clips included music, movies, news and sport.
The model outperformed other audio-based techniques, correctly identifying 93 per cent of the pornographic content from the test clips. The clips it missed had confusable sound, such as background music, causing the model to misclassify some lewd clips. Comedy shows with laughter were also sometimes mistaken for pornography, as the loud audience cheers and cries share similar spectral characteristics to sexual sounds.
Yes, yes, oh yes
"It's quite ingenious," says Richard Harvey, a computer scientist at the University of East Anglia in Norwich, UK, who previously worked on image-based pornography detection. But image-based methods are no less accurate, he says, and only require a single frame whereas the performance of the audio method needs to analyse longer clips.
He suggests it might be better to combine both methods to weed out unusual cases: "Think of that scene in When Harry Met Sally [in which a female character fakes an orgasm while fully clothed in a diner] – the audio is very clearly pointing in one direction, but the video is not."
The researchers will present the work at the International Workshop on Content-Based Multimedia Indexing in Madrid, Spain, next month.
[/quote]
Source:
[url]http://www.newscientist.com/article/dn20498-sound-of-sex-could-alert-internet-porn-filter.html[/url]
Sounds orgasmic.
Im quite sure something else could be mistaken for "moans".
[QUOTE=SinjinOmega;29961443]Im quite sure something else could be mistaken for "moans".[/QUOTE]
Like a movie where someone is giving birth.
Why would anyone want to stop porn?
Turn the sound off?
[QUOTE=RubberFruit;29961528]Turn the sound off?[/QUOTE]
That doesn't work. The sound may not be coming through your speakers, but the sound is still there.
[QUOTE=Jacinth;29961557]That doesn't work. The sound may not be coming through your speakers, but the sound is still there.[/QUOTE]
:smith:
But really, these "researchers" probably just want to watch porn at work.
I would be sighing about this, but I'm afraid the computer will try and stop me
[QUOTE=Jacinth;29961557]That doesn't work. The sound may not be coming through your speakers, but the sound is still there.[/QUOTE]
Then it's an electric current, not sound.
[QUOTE=SinjinOmega;29961443]Im quite sure something else could be mistaken for "moans".[/QUOTE]
Horror movies.
When a girl is being chased and or killed, the screams could EASILY be mistaken for sexual acts.
What if the computer confuses an ad for constipation with gay porno?
"urrrgh, urrrr, urrrr, Ahhhhh!"
[QUOTE=Jacinth;29961557]That doesn't work. The sound may not be coming through your speakers, but the sound is still there.[/QUOTE]
it would work if you lower the volume down on the video itself, not speakers.
[editline]21st May 2011[/editline]
well, i guess it depends on what level its working at.
[QUOTE=captainHOE;29961494]Like a movie where someone is giving birth.[/QUOTE]
or the beginning of assassins creed 2
[QUOTE=kmlkmljkl;29961721]or the beginning of assassins creed 2[/QUOTE]
Mistaken for... I don't even want to know what kind of porn the porn filter could mistake THAT for.
[QUOTE=SinjinOmega;29961443]Im quite sure something else could be mistaken for "moans".[/QUOTE]
Like anime.
Do you have Irritable Bowel Syn- !PORN DETECTED!
[QUOTE=cathal6606;29961520]Why would anyone want to stop porn?[/QUOTE]
Because it is evil and makes baby Jesus cry and gas prices to go higher.
[QUOTE=captainHOE;29961494]Like a movie where someone is giving birth.[/QUOTE]
But what if I fap to that
[QUOTE=cathal6606;29961520]Why would anyone want to stop porn?[/QUOTE]
One reason: They're idiots
[QUOTE=Anthophobian;29961595]Then it's an electric current, not sound.[/QUOTE]
It's a sound contained within MP3 or AMR or such digital stream. And on this level such filter would detect it.
[editline]21st May 2011[/editline]
I can't wait for porn videos with Benny Hill on background to cover up the moaning, that will be hilarious.
[editline]21st May 2011[/editline]
Also, start moaning into microphone while playing with some kid who's on computer with parental software and watch how they disconnect as their computer shuts down.
Have these researchers ever heard of .gif files? Or .png and .jpg for that matter.
An average paperbat terraria video would get flagged.
The question is, why are you trying to filter the internet?
[quote]Comedy shows with laughter were also sometimes mistaken for pornography, as the loud audience cheers and cries share similar spectral characteristics to sexual sounds.
[/quote]
every sitcom ever made
[QUOTE=triFeral;29965247]every sitcom ever made[/QUOTE]
Could they fine tune this so I could watch stuff like Big Bang Theory without that fucking laugh track?
[QUOTE=cathal6606;29961520]Why would anyone want to stop porn?[/QUOTE]
It's Unholy.
It's Degrading.
It's also been done ever since art was invented.
No more this:
[media]http://www.youtube.com/watch?v=F-bsf2x-aeE[/media]
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