Basic projection mapping?

Discussion in 'Digital Video' started by stefanwa, Apr 12, 2013.

  1. stefanwa macrumors newbie

    Joined:
    Jan 12, 2009
    #1
    Hi!

    Maybe one of you could help me out in setting up a basic video projection with my MacBook and an older LCD 720 16:9 projector...

    I want to make a video projection of moving clouds in the illustrated shape of a cloud. Just on a plain white wall. I don't want the square 16:9 light be seen around my "video object". I have made some quick images to demonstrate what I want to do...

    [​IMG]
    This is how it should look. The wall is grey in this example.

    It should not look like this:
    [​IMG]

    or this:
    [​IMG]

    I hope I made it clear. Maybe I'm just not getting it, but do I need some projection mapping software for this? If I need it, what would be a simple solution (preferable free)?

    Thanks for suggestions!
    Steve
     
  2. lucidmedia macrumors 6502a

    Joined:
    Oct 13, 2008
    Location:
    Wellington, New Zealand
    #2
    VPT is the only free projection mapping software I know of for OSX. VVVV is also free, but PC only. I use MadMapper, but that is paid software. You can also write your own masks/deforms in Processing, which is a free programming language.

    This is a really simple mask. You may want to try types of optical masking first if you really want to shut the projector down in the non-image areas... try a cardboard mask or taping off the lens. Even with projection mapping software, you will get light bleed on your non-image areas.
     
  3. stefanwa thread starter macrumors newbie

    Joined:
    Jan 12, 2009

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