Problem separating image from background

Discussion in 'Design and Graphics' started by Ish, Jan 21, 2007.

  1. Ish
    macrumors 68000

    Ish

    Joined:
    Nov 30, 2004
    Location:
    UK
    #1
    Hi, wonder if you can help please.

    I've taken a photograph and used InDesign > clipping path > detect edges to separate the main item from a plain background. I then pasted the image onto a dark blue background to make a poster for a display at a conference. When I pasted the image, it had a thin white line around it.

    Is there some way I can colour these white pixels with the background colour? It needs to have a professional look to it when it's finished. If there is a better way to separate the image I don't mind starting again.
     
  2. macrumors 65816

    adrianblaine

    Joined:
    Oct 12, 2006
    Location:
    Pasadena, CA
    #2
    InDesign isn't really meant to be doing these kinds of things. If you have Photoshop, I'd do it there first.
     
  3. macrumors 65816

    Lovesong

    Joined:
    Sep 15, 2006
    Location:
    Stuck beween a rock and a hard place
    #3
    I'd agree with that. Use PS, and just extract your image.
     
  4. macrumors 68000

    dllavaneras

    Joined:
    Feb 12, 2005
    Location:
    Caracas, Venezuela
    #4
    Definitely PS, then you might try using the blur tool around the edges
     
  5. Moderator emeritus

    Joined:
    Jul 4, 2004
    #5
    Clipping paths are a bit old-skool, but still effective and are best used for hard shapes with clean lines.

    If you're in a hurry and don't want to spend time setting up a mask in Photoshop, you can adjust the inset of the clipping path from within the clipping options in InDesign which will reduce the white line you want to get rid off... however, it will still be a sharp clipping.

    By also adjusting the threshold and tolerance of the path, you can usually get a good fit unless the subject has blur or hair, or other shapes that don't clip cleanly.

    If you want to use Photoshop, then it's best to make a mask which enables you to have softer edges. Blur tool in the right places, a touch of Gaussian blur on the mask, and/orusing the Extract tools to get exactly what you want will probably give you a cleaner result.
     
  6. Ish
    thread starter macrumors 68000

    Ish

    Joined:
    Nov 30, 2004
    Location:
    UK
    #6
    Well, I've been busy this morning following all the suggestions and I now have the image up on the blue background with no white edges, and with the edges softened. Might try softening them a bit more. Many thanks.

    I'm more used to InDesign so tend to go there first. Must start having a play around with Photoshop.
     

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