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Old 2nd Jun 2008, 08:39   #1
penski
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Can someone un-swirl this pic please?



Pretty pretty please?

There's a cookie in it for you...

*n
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Old 2nd Jun 2008, 10:52   #2
Izi
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Pretty pretty please?

There's a cookie in it for you...

*n
Dont think its possible. Tried in photoshop and failed.
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Old 2nd Jun 2008, 10:55   #3
tres
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you need top top programs for that... the police have them, take the cookie to them and ask

actually, interpol can do it
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Old 2nd Jun 2008, 11:21   #4
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I tried, but I'm afraid I can't do much better than this:



It's a car, and quite an old one by the looks of it.


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Old 2nd Jun 2008, 12:10   #5
Rhys
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pretty good result. What did you use to unswirl it?
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Old 2nd Jun 2008, 12:12   #6
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picture above is about as good as I can get it using photoshop, yours is a bit better though. Need something where you can set the thickness of each part of the swirl then it would be easier would still take some time though.
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Old 2nd Jun 2008, 12:18   #7
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The trick is to reverse the algorithm of the swirl effect in Photoshop. Unfortunately you need pretty much the exact settings reversed to get a decent image.


Boom.
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Old 2nd Jun 2008, 12:22   #8
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The trick is to reverse the algorithm of the swirl effect in Photoshop. Unfortunately you need pretty much the exact settings reversed to get a decent image.
Yep. The image's aspect ratio has been changed and it's also been cropped post-twirl, and both of these affect the results, so it's pretty much imposssibl to do it perfectly.


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Old 2nd Jun 2008, 14:03   #9
penski
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Gah - it's the new 'secret project' of a guy I know...Trying to work out what it is

*n
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Old 2nd Jun 2008, 14:07   #10
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I'd say an early Mk3 Tina estate but the wheels are throwing me off.

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Old 2nd Jun 2008, 14:09   #11
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Nova or Mk1 Astra?

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Old 2nd Jun 2008, 14:14   #12
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There's so many filters in PS, which category is "swirl" in?

EDIT: Distort - Twirl (I didn't do very well tho)


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Old 2nd Jun 2008, 14:19   #13
paradigm
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Quote:
Originally Posted by MikeHunt79 View Post
There's so many filters in PS, which category is "swirl" in?
Distort > Twirl


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Old 2nd Jun 2008, 14:26   #14
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Didn't it take Interpol (or something similar) a couple years getting the picture of some child porn guy unswirled?
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Old 2nd Jun 2008, 14:28   #15
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You need some seriously sophisticated (and not usually commercially available) software to do that. Photoshop won't cut it.

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Old 2nd Jun 2008, 15:12   #16
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Ok, that can be reversed, but the problem is that it is a "composite" effect, it is more than just a "twirl", it is 2 or more twirls together.

It probably possible in photoshop somehow to use actions/automate to produce say, 100 different slight counter twirls to produce 100 images, and then on each of them produce another 100 twirls, that would produce 10,000 images but it would be pretty easy to visually see which ones are the clearest. The main problem is that the original mapping would have damaged the quality of the picture so it may be fuzzy when it is finally untwirled, if that is even possible.

EDIT : My estimation for the picture is... a car.

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Old 2nd Jun 2008, 15:37   #17
penski
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Lol...nice try! Seeing as you tried so hard... In photoshop, flip it horizontal then filter, distort, spiral. Might work haha...if it does, don't tell anyone
Ooooh....The sneaky wee nyaff!



*n
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Old 2nd Jun 2008, 16:56   #18
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You need some seriously sophisticated (and not usually commercially available) software to do that. Photoshop won't cut it.
Why would you actually need it though?


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Old 2nd Jun 2008, 17:04   #19
Una
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Why would you actually need it though?
In case someone goes through your photo collection, swirls them and you got no backups?
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Old 2nd Jun 2008, 18:32   #20
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Is it a lada riva estate? wheels look a bit off though
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Old 3rd Jun 2008, 12:57   #21
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Why would you actually need it though?
An alleged child solicitor was recently discovered that way iirc.

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Old 3rd Jun 2008, 13:06   #22
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An alleged child solicitor was recently discovered that way iirc.
But why would they twirl the photo and then release it? If they didn't want to be caught then surely it would've been much more sensible just not to release it?

Can't be a very common occurrence


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Old 3rd Jun 2008, 13:26   #23
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But why would they twirl the photo and then release it? If they didn't want to be caught then surely it would've been much more sensible just not to release it?

Can't be a very common occurrence
I think the man involved was pictured with children and had swirled his face to protect his identity. The un-swirl algorithm was produced to catch "Mr Swirl"

Quote:
...
Last October Interpol released pictures of a suspected paedophile, dubbed Mr Swirl, who had disguised his face on the internet using a digital technique.

The image was unscrambled and soon after a 32-year-old Canadian ex-teacher, Christopher Neil, was arrested. He is due to go on trial in Thailand in June.
...
Source: http://news.bbc.co.uk/1/hi/world/americas/7390830.stm
Swirled and un-swirled pics in the link

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Old 3rd Jun 2008, 13:28   #24
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Ah, ok, didn't realise it was bespoke.


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Old 4th Jun 2008, 06:53   #25
NickK
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Gah - it's the new 'secret project' of a guy I know...Trying to work out what it is

*n
Looks like a Lada estate..

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Old 4th Jun 2008, 07:13   #26
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Looks like a Mk1 Fiesta from the back
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