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Scanning 2 sided objects

  • KC

    I'va been having a hard time scanning round objects that have both an concave and convex surface.

    I did 2 scans, one of the inside and one of the outside. Knowing they wouldn't align properly for lack of common areas, i did a 3rd up right scan of the object to serve as a reference frame, scanning both inside and outside in the same scan. 
    Even then, i had a very hard time properly aligning everything, even manually.
    The idea was to align the outside scan to the reference scan, then the inside and ditch the reference scan. I and lots of miss alignement issues, result ing in wrong proportions, sometimes, both sides would overlap in certain areas only.

    Think about scanning a frying pan or cooking pot, not just a surface.

    I know this is a common issue on all scanning devices in existance, maybe something can be done to make the process easier when aligning the scans prior to meshing. Just my 2 cents.
  • 3D_Penguin

    One of the things I've been doing is to place small 3D points (using something like Blutack) around objects if I can't fully capture their curvature or with larger surfaces. With enough unique points, I'm finding alignment to be much more successful.
  • DS

    Hi Karine-Johanne Charlot,

    Objects like that pot can be tricky because you need to have overlapping data for it to align properly. Thin walls can also make the aligning difficult. I've found adding an object to the inside of the pot, that can be seen from both inside and outside helps to get the alignment started, then you can delete that object in the editor, and replace the missing area with one final scan. 
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