Show HN: iOS app finds friends' bikini pictures using OpenCV object detection.

https://itunes.apple.com/us/app/badabing!/id548536602?mt=8

by ebarto • 14 years ago

11 18 14 years ago

itunes.apple.com

I'm giving away some Promo Codes here as well, just as a thank you to the HN community. Would love your feedback.

ebarto6• 14 years ago

The website for it is www.badabingpics.com

nathanpc3• 14 years ago

How did this app passed Apple's App Approval process? I think they have a clause that they will deny apps that might lead to these kind of pictures.

Also I think you should protect those persons privacy using black bars on their eyes?

ebarto6• 14 years ago

You are only filtering content already available on Facebook, there are many apps that do something similar. As far as the black bar on the screenshots, I actually got everyone on the preview pictures to agree to be on the App Store and website, they are all people I know and actual results from a search using the app.

zoidb• 14 years ago

I think as soon as this gets on apple's radar it will be removed from the app store. Applications have been removed for less, sorry.

nathanpc3• 14 years ago

Ahh then the privacy stuff is ok. Thanks.

But when Apple take a closer look at it they might take it off since they removed other apps for a lot less.

mooism2• 14 years ago

Just what the world needs: a way for people to turn their friends into sex objects.

Do your friends know you're the sort of person to perve over photos of them in their swimsuits?

ebarto6• 14 years ago

Well I'm hoping I'm not the only user, and yes all my friends know I'm working on this. And have been for a while. It's not about perving your friends' pictures or turning people into sex objects. These pictures are already up on Facebook, Badabing is just a filter. We will be adding a feature to nominate your friends to a contest, as long as they accept to be in it.

nathanpc3• 14 years ago

It is about turning people into sex objects, also that contest stuff is really creepy. Just make sure you never add sharing features to the app.

luke_s• 14 years ago

As the poster has already pointed out, these are pics that people have already shared via facebook.

Computers sometimes allow us to do things was were already doing, except at a massive scale. Pre-napster, people were already able to share music with their friends via mix tapes, etc. Suddenly they were able to share with millions, without leaving their own home.

Similarly people were already able to scroll through their friends facebook albums for bikini pics. Suddenly they are able to to do it for 5 friends at once, with the click of a button. Changing the difficulty and scale of something can totally alter the dynamics of the situation. It will be interesting to see if services like this alter the behaviour of people 'oversharing' on facebook.

atarian• 14 years ago

How dare he make something that was already possible, more easier to do!

danhon• 14 years ago

Yeah, it's pretty clear what the bias is here, though. Search your friends for their bikini pics.

holgersindbaek• 14 years ago

Nice one. I bet you could put the price tag up a bit. Sex is something people are always willing to pay for ;-).

ebarto6• 14 years ago

Thanks, we're trying to get some people to test it, we will keep it at $1.99 for now.

poopicus• 14 years ago

Well, this is insanely creepy, but at least it shows a bit of entrepreneurial spirit. Rather than focus on the somewhat questionable ethics, how about we talk about how it actually accomplishes this?

1) What features of OpenCV are you using, what sort of shapes are you looking for in images?

2) What's the true positive rate on test sets? And importantly, what's the false negative rate?

ebarto6• 14 years ago

Well, thanks. So:

1) We are using rapid Object Detection by training Haar classifiers of different bikini shapes (top, bottom, strapless bikinis etc). We used opencv_haartraining to get a few XMLs we use for testing each image.

2) The true positive and false positive rates vary depending on the test we are performing (top, bottom...) so we have a formula based on the combination of these and the amount of hits found in each picture by each classifier, where we assign the picture a probability of it containing a bikini (based on a controlled sample of 3000 pictures). As of now we are looking at user feedback to make sure our threshold is where it needs to be so that we provide just the right amount of true/false positives in our results.

hnwh• 14 years ago

I'm just waiting for the app post to someone's timeline:

"John just searched for Carrie on Badabing! Badabing Carrie youself!"

leonk• 14 years ago

I got it for a laugh and am searching people in the office. Nothing seems to be happening. It's been loading one person for around 30 minutes now.

Show HN: iOS app finds friends' bikini pictures using OpenCV object detection.

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