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Convert Perspective picture to Ortho picture for CAD

  1. Sep 12, 2015 #1
    I want to take a picture of an object. Then import the image into cad. And trace it. The issue I am having is the picture from the camera is a 3D perspective image. So it is impossible for me to trace in CAD.

    Is there a way to convert an image from perspective to orthogonal? Or create a coordinate system in cad that is perspective instead of orthogonal.
     
  2. jcsd
  3. Sep 13, 2015 #2

    Baluncore

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    I assume you have a 2D picture of a 3D world, with a perspective vanishing point that can be located in 2D. Do you want a 2D orthogonal or a 3D orthogonal image?

    Unless you specify the number of dimensions it is difficult to work out what mapping you are trying to perform.
    A 3D orthogonal coordinate system from cad could be used to generate a 2D perspective drawing if you specified a viewpoint.
     
  4. Sep 13, 2015 #3
    Well, the image is of a 3D world, but if I import the image into CAD it would be a projection onto the XY Plane. So I would say it is a 2D projection. If this helps. The image is a normal camera picture.
     
  5. Sep 13, 2015 #4

    Baluncore

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    So you want to convert a 2D perspective image of a 3D object to an orthoganal CAD object.
    But do you want to convert that to a 2D or a 3D orthogonal CAD object ?

    How many perspective 2D images do you have from different viewpoints of the one original 3D object ?
    Does the imaged object have some geometric symmetry that could be used to regenerate a missing third dimension ?
     
  6. Sep 15, 2015 #5
    I need to convert it into a 3D orthogonal CAD object. The object is geometric. It is simply but to recreate it would take lot of measurements. I can take as many pictures as I need.
     
  7. Sep 15, 2015 #6

    Baluncore

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