Sandbox Size

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This topic contains 4 replies, has 4 voices, and was last updated by  Oliver Kreylos 3 years, 6 months ago.

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  • #100697

    basgan
    Participant

    Hi,

    First of all, thank you for your great work and sharing it. We have built the latest version of the software and everything seems fine so far. We would like to make sandbox larger than the recommended size. (something like 1.5m-2.0m) What should be the height of kinect and the projector? Is there any other point we should consider?

    Thanks

    #100698

    Oliver Kreylos
    Keymaster

    Due to the Kinect’s fixed field-of-view, it has to be mounted at approximately the same height above the intended sand surface as the sandbox’s width. To wit: sandbox 1mx0.75m => Kinect (and projector) height 1m; sandbox 2mx1.5m => Kinect height 2m.

    The main issue is that the Kinect’s depth resolution, i.e., the sandbox’s elevation resolution, is inversely proportional to distance squared. From 2m away, the Kinect won’t be able to resolve height differences smaller than around 1cm.

    #101171

    MarkC
    Participant

    Did you end up building a larger sized sandbox, or did anyone out there? Is the depth resolution that is lost that noticeable?

    Thanks

    #101172

    funnypilgrim
    Participant

    Good morning, folks,

    What about a slightly smaller sandbox? Would a 24×36 box work? I see one was used while perusing the photos of the other exhibits (the black plastic mixing tub).

    Thanks!

    #101181

    Oliver Kreylos
    Keymaster

    Going smaller doesn’t cause technical issues, but you lose play space.

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