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  • How to blur out background image but keep foreground

    Posted by Ralph Moore on November 11, 2010 at 3:51 pm

    I have a scene that takes place in a setting that has artwork on the walls. I need to blur out the artwork b/c of copyright issues. My problem is that people move in front of the art during the scene. Is there an easy way to blur out the art behind them, but not blur them when they walk in front of it? The camera is also not stationary.

    I’m new to AE and am using CS5 (Premiere Pro CS4).

    Thanks in advance.

    Todd Kopriva replied 15 years, 9 months ago 4 Members · 5 Replies
  • 5 Replies
  • Eric Chard

    November 11, 2010 at 6:48 pm

    It would be FAR easier to preserve the foreground and just blur EVERYTHING. Pretend you’re shooting w/70mm film and have very limited DOF.

    And, if you are hazy (har!) on what DOF is, hit the books.

    ++++++++++++++++
    “Putting the HARM in ‘harmonica’ since 2005.”
    ++++++++++++++++

  • John Cuevas

    November 11, 2010 at 7:34 pm

    Can’t speak for him, but I can give you my bosses reply, “Yeah, when we were shooting, this guy walks through the back of the shot…SO JUST DO THAT THING YOU DO AND REMOVE THEM”

    Apparently all you have to do is push the “thing you do” button.

    Johnny Cuevas, Editor

  • Ralph Moore

    November 11, 2010 at 10:34 pm

    Thank you, I will look into this tonight.

  • Eric Chard

    November 12, 2010 at 2:09 am

    You can’t. But, say it’s an interview: would you rather mask out one semi-static interviewee, or the multiple moving people in the background?

    Either way, he’s looking at a lot of work.

    ++++++++++++++++
    “Putting the HARM in ‘harmonica’ since 2005.”
    ++++++++++++++++

  • Todd Kopriva

    November 12, 2010 at 7:37 pm

    As Dave said, rotoscoping is the way to accomplish this precisely, but that is very tedious. The Roto Brush tool can make this a lot less tedious, but it’s still not a one-click solution.

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