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Can someone un-swirl this pic please?

Discussion in 'HTML, Graphics & Programming' started by penski, Jun 2, 2008.

  1. penski

    PermaBanned

    Joined: May 9, 2005

    Posts: 20,836

    Location: NE8

    [​IMG]

    Pretty pretty please?

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

    *n
     
  2. Izi

    Mobster

    Joined: Dec 9, 2007

    Posts: 2,716

    Dont think its possible. Tried in photoshop and failed.
     
  3. tres

    Soldato

    Joined: Oct 16, 2007

    Posts: 6,491

    Location: UK

    you need top top programs for that... the police have them, take the cookie to them and ask

    actually, interpol can do it
     
  4. Inquisitor

    Capodecina

    Joined: Apr 12, 2004

    Posts: 11,791

    Location: Birmingham

    I tried, but I'm afraid I can't do much better than this:

    [​IMG]

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

    Wise Guy

    Joined: Jan 3, 2006

    Posts: 1,788

    Location: South Wales

    pretty good result. What did you use to unswirl it?
     
  6. Exentia

    Soldato

    Joined: Sep 27, 2004

    Posts: 5,642

    Location: Bristol

    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.
     
  7. Slogan

    Soldato

    Joined: Jun 27, 2006

    Posts: 5,488

    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.
     
  8. Inquisitor

    Capodecina

    Joined: Apr 12, 2004

    Posts: 11,791

    Location: Birmingham

    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.
     
  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 :p

    *n
     
  10. 4T5

    Man of Honour

    Joined: Aug 30, 2004

    Posts: 27,750

    Location: Middle of England

    I'd say an early Mk3 Tina estate but the wheels are throwing me off.
     
  11. Prophet

    Soldato

    Joined: Oct 5, 2004

    Posts: 7,245

    Location: Notts

    Nova or Mk1 Astra?
     
  12. MikeHunt79

    Capodecina

    Joined: Jan 4, 2004

    Posts: 20,838

    Location: ¯\_(ツ)_/¯

    There's so many filters in PS, which category is "swirl" in?

    EDIT: Distort - Twirl (I didn't do very well tho)
     
    Last edited: Jun 2, 2008
  13. paradigm

    Caporegime

    Joined: Aug 26, 2003

    Posts: 33,512

    Location: Staffordshire

    Distort > Twirl
     
  14. Tripnologist

    Mobster

    Joined: May 12, 2007

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    Location: Bristol

    Didn't it take Interpol (or something similar) a couple years getting the picture of some child porn guy unswirled?
     
  15. platypus

    Caporegime

    Joined: Jul 25, 2003

    Posts: 38,059

    Location: Rhône-Alpes+Cambridge

    You need some seriously sophisticated (and not usually commercially available) software to do that. Photoshop won't cut it.
     
  16. Shoseki

    Mobster

    Joined: Jan 12, 2004

    Posts: 3,172

    Location: Brighton

    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.
     
    Last edited: Jun 2, 2008
  17. penski

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    Ooooh....The sneaky wee nyaff!

    :D

    *n
     
  18. Inquisitor

    Capodecina

    Joined: Apr 12, 2004

    Posts: 11,791

    Location: Birmingham

    Why would you actually need it though?
     
  19. Una

    Wise Guy

    Joined: Nov 26, 2004

    Posts: 2,472

    Location: Reading / Lake District

    In case someone goes through your photo collection, swirls them and you got no backups? :p
     
  20. whitecrook

    Sgarrista

    Joined: Aug 22, 2005

    Posts: 8,215

    Location: Clydebank

    Is it a lada riva estate? wheels look a bit off though
     


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