MADMAPPER CINEMA 4D SPATIAL SCANNER PROBLEMS
  • stephane bordonaro
    member
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    Joined: Thu Aug 28, 2008 9:16 am
    Location: reims
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    MADMAPPER CINEMA 4D SPATIAL SCANNER PROBLEMS

    by stephane bordonaro » Thu Feb 06, 2020 6:42 pm

    Hello madmapper user,
    Here i share my workflow for doing projection mapping on a 3d car model .
    The purpose is to made a projection on a car .

    I made the setup with a viewsonic M1 projector by projecting on a real 3d model of a car ( scale 1/5).
    I made a spatial scanner wich fit prefectly with the real 3d model by projecting it throw madmapper.
    I have made a .obj of the model in c4d.
    So now , i import the image of the spatial scanner in C4d.
    I use the calibrator camera tag to find the place of the camera (videoprojector) and type of lens.
    all project ( mad mapper , c4d , spatial scanner) are in 1920x1080.
    i use a canon 5d with a 50 mm fixe angle .

    C4d find something , but the problems start:
    impossible to place my model on the spatial scanner image.
    is the place of PIN wich is needed to find the distance of the camera important ?
    where to put in the image of the spatial scanner ?

    it seems that i don't have the correct lens distortion and . the image looks very distorted
    so my questions :
    is the type of projector , panasonic M1 ( Objectif: F = 1,7, f = 5,5 mm - throw ratio: 1.2 ) a probleme ?
    is the place of the videoprojector a probleme ? it is placed about 1m80 high , the model is about 1m hight and seen 3/4 view)
    what is the correct lens of a spatial scanner ?


    i try to import directly the .obj file into madmapper to fit with calibrate system inside madmapper ...the problems occurs again .
    impossible to have a correct lens distorsion .

    any help will be precious !
  • franz
    madMapper master
    Posts: 834
    Joined: Fri Feb 18, 2005 7:05 pm
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    Re: MADMAPPER CINEMA 4D SPATIAL SCANNER PROBLEMS

    by franz » Fri Feb 07, 2020 2:00 pm

    post your scan and your object if that's possible, so we can have a look at it.
    1.2 throw ratio should be ok, although it works best with 1.8-2.2 throw ratio
  • stephane bordonaro
    member
    Posts: 10
    Joined: Thu Aug 28, 2008 9:16 am
    Location: reims
    Contact:

    Re: MADMAPPER CINEMA 4D SPATIAL SCANNER PROBLEMS

    by stephane bordonaro » Sat Feb 08, 2020 5:09 pm

    Hi,
    ok i post the spatial scanner.
    i change the VP by a qumi ( throw ration : 1,66:1) and higher resolution .
    Everything works perfectly !
    i rearrange my c4d model wich maybe was not perfect.
    The trick was to have a some precise point on the photo/spatial scanner to make Y axis correct during calibration.
    thx
    Attachments
    ds3 spatial scanner.png
    ds3 spatial scanner.png (852.17 KiB) Viewed 325 times

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