Projector option

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This topic contains 11 replies, has 6 voices, and was last updated by  martin 2 months, 2 weeks ago.

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  • #110917

    travis
    Participant

    Hello, I am looking for a projector for the sandbox. Apart from suggested BenQ model, is this projector suitable for the sandbox? thank you

    ViewSonic PJD6352LS

    Resolution
    1024 x 768
    Throw Ratio
    0.61
    Throw Distance
    2.0 – 10.1 ft. / 0.61 – 3.09m
    Brightness (ANSI Lumens)
    3,500
    https://www.viewsonic.com/us/pjd6352ls.html

    #110918

    liudr
    Participant

    Are you going to make a 30″ by 40″ sand box? If that is the case, then the throw ratio is too short. Your projector may be too close to the sand box and may cast a shadow over the field of view of your kinect sensor. I use throw ratio close to 1.0 projectors. This way the projector and kinect sensor are at the same height.

    #110919

    travis
    Participant

    Yes the sandbox size is 30″ by 40″ so I choose another projector.
    Thank you liudr

    #110920

    travis
    Participant

    I have also found another BenQ model(BenQ MS630ST) similar to BenQ MX631St, but the resolution seems lower. Is it a problem for its working? Thanks all!

    Native Resolution‎ SVGA (800 x 600)‎
    Aspect Ratio‎ Native 4:3 (5 aspect ratio selectable)‎
    Throw Ratio‎ 0.9-1.08 (78″ @ 1.44m)‎

    http://www.benq.co.uk/product/projector/ms630st/specifications/

    #110922

    travis
    Participant

    Is the resolution 800X600 enough for the projector as the resolution is limited by the Kinect camera’s 640×480 pixels? Thanks a lot!

    #110933

    mkaszuba
    Participant

    Any Short Throw projector will work. 1024×768 is best for a resolution but 800×600 will work. Because of the proximity to the sand surface ( 3 to 4 feet) A short throw device is best.

    #110941

    Oliver Kreylos
    Moderator

    80×600 will work, but it won’t be as pretty. The Kinect’s resolution is 640×480, that’s correct, but the AR Sandbox benefits from higher-resolution rendering. Countour lines will look a lot better at higher resolution, and water will look a bit better as well.

    #110950

    travis
    Participant

    Thank you!

    #110959

    liudr
    Participant

    I’ve used mx631st. It’s very nice. I’ve not used ms630st. Benq projectors have serial port command capabilities. You can turn them off or on eco mode when there is nobody at the sandbox, that is if you have sensors to detect people.

    #110971

    travis
    Participant

    Thanks for your help 🙂

    #111116

    gamecode
    Participant

    Dear Sir ;

    I would like to get big size sandbox aprx 75 cm x 250 cm . Is it possible with one kinect ?

    I tried but I just get good result only middle of the box .

    Waiting your reply.

    #115758

    martin
    Participant

    Would a BENQ GS1 projector be suitable? Sandbox is 75x100cm

    Throw Ratio 0.8 (60″@1.0m)
    Native Resolution 720p (1280x 720)

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