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Thread: 4 Projector blend on a sphere

  1. #1

    4 Projector blend on a sphere

    I have never done a (4) projector blend on a sphere. How do I accomplish this using Catalyst v4.0 using two servers?

  2. Quote Originally Posted by Mtomarob View Post
    I have never done a (4) projector blend on a sphere. How do I accomplish this using Catalyst v4.0 using two servers?
    Hi, that sounds like a nice project...

    What you need to do is create 4 submixes (1 for each projector, and since your using 2 servers, 2 outputs per server) and route your layers to all submixes. It's most easy to just have both servers running the same layers @ the same DMX adresses....

    Then you have to apply an X-offset to each submix considering the amount of overlap you need. This way you tell each submix to be next to eachother, instead off being all in the same place.

    You then have to apply an curved output setting for each submix, using for example the circle preset in there... And then it's just drag the points to get your points together..

    Sounds very simple, and it isn't so hard once you figured it out...
    if you need more info or want me to create a setup for you wich I can mail to you, please mail me...
    Attached Images Attached Images
    Fons Hogenes
    Improve
    Rotterdamseweg 270
    2628 AT DELFT
    Netherlands
    info@improve.nl

  3. #3
    Could this be done with one server using the submixes?

  4. Quote Originally Posted by Mtomarob View Post
    Could this be done with one server using the submixes?
    Hi,

    Oh yes you can, using 2 Dual head to go, or 1 Triple head to go, thus creating 4 projector outputs....

    Done 4 projector panorama's lots of time with a Triplehead. Depending on the amount of content this runs fine... If you need more computer power you can do it with 2 computers...
    Fons Hogenes
    Improve
    Rotterdamseweg 270
    2628 AT DELFT
    Netherlands
    info@improve.nl

  5. #5
    http://www.ibeamsp.com/pages/Globo.html

    We did it here in Brasil.
    With 4 - 15 K projectors, and 0,8 lenses.
    1 Catalyst
    1 TripleHead

    Gian
    Gian
    Ibeam SP
    SP, Brasil

  6. #6
    Join Date
    Nov 2007
    Location
    Tokyo / Japan
    Posts
    14
    How's blending of the ceiling of the sphere ?

    Top of the sphere is must be a blending of the 4 projectors.

    Is it possible?


    Usami

    ***************
    Mileruntech.com

    Tokyo Japan

  7. #7
    On our experience, with 4 projectors with a 0.8 lenses, you will miss a whole on the top of the sphere, like a meter os so. What we do is we use a TOP Blend on the layers.
    Gian
    Ibeam SP
    SP, Brasil

  8. #8
    I have done a few spheres of different sizes. I personally prefer longer throw lenses since the further the projector is, the less proportional the optical distortion. Nevertheless, I've done a few 0.8s as well.

    If you want to blend an entire sphere you'll need to hit it from six projectors (4 sides, top, and bottom). I did part of this once (no top, just bottom).

    The content creation was actually the hard part.

    The content creation model was card board box style with a center square and four squares on each side of it which folded up. It was actually pretty tough and the innovation was applauded but I would have preferred setting for something much simpler.

    Just try doing a linear wrap with four. If you absolutely must do full coverage, contact me and I'll give a little more detail.

    I also strongly suggest trying a prototype first with a small sphere and some low power projectors somewhere off site.
    SourceChild
    TODD SCRUTCHFIELD

    ...if it ain't broke...
    gimme 5 and then don't act surprised

  9. #9
    Join Date
    Nov 2007
    Location
    Tokyo / Japan
    Posts
    14
    Hi

    Thanks for suggestion.

    In case of such an image? (see below)

    http://obscuradigital.com/work/domes/aol_ces_las_vegas

    In such a projection, will it be the best solution to use five projectors?
    It is an adjustment of a very difficult keystone.



    Mileruntech.com
    Tokyo Japan

    Usami

  10. #10
    Hey Usami,

    I think we did not understand you correctly. We believed you were to project on to outside of sphere. The picture you show is inside of sphere.

    They use custom technology to create the sphere. If you wanted to use Catalyst to do the same thing I can imagine a way to do it but would take at least 7-8 projectors and at least 2 Catalyst machines.
    Last edited by SourceChild; 24-02-2009 at 07:53 AM. Reason: typos
    SourceChild
    TODD SCRUTCHFIELD

    ...if it ain't broke...
    gimme 5 and then don't act surprised

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