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DML Documentation

Documentation for the Digital Media Lab in Ellis Library

Basics

3d Turntable Scanner Guide

Basic Instructions

 

  1. Log in using un: UM-AD\”MizzouUN” and your password.
  2. Hold your finger over the power button on the back of the turntable scanner until it lights up blue and turns on.
  3. Open up EinScan-S from the desktop or files>Windows (C:)> Shining3d >EinScan-S_Series > EinScan-S. If you have to take the long route, put a shortcut on the desktop for later use.
  4. Choose EinScan-SE.
  5. Choose to calibrate before performing a scan.
    1. Follow the instructions on screen and avoid moving the base for best results.
  6. When it is time to perform your fixed scan, choose New Project and name the file.
  7. Choose texture scan if you have an intricate design, or choose non-texture scan if the shape is smooth.
  8. Choose the type of scan that shows the least amount of red. The bar under the four options gives you more control for objects that don’t fit perfectly into the categories. If something appears as red in the preview in the top left corner, it means it will be difficult to capture.
  9. Enter a number between 8 and 180 on the left side of the screen under the preview. It’s best to start with 8 and add more if the scan was not precise enough.
  10. If you have a complex shape, scan it once, reposition it, and scan it a second time. This can be done more times if necessary.
    1. If the scan does not properly mesh you can realign (it’s one of the options on the right about halfway down). This allows you to choose three points that match up with the model. You can try this multiple times, but realign before adding a third scan.
  11. When your scans are complete you can choose watertight or unwatertight mode. Watertight mode will close up any holes in the object, but it will not necessarily do it correctly. Watertight mode is best for seemingly accurate scans (those without obvious holes).
  12. It can be saved in a variety of file types such as .obj or .stl. It is now ready to be edited in postproduction.

 

 

Considerations

Is this a good material to scan?

Yes

No

With some changes made

Simple 3d shape

3d scan of children's block

This toy is a solid, brightly colored block.

Flexible complex objects that will change shape if repositioned

Black objects (powder)

Solid

Fuzzy objects/overly textured

Scan of fuzzy shoe with holes

This fuzzy shoe ends up with many holes, however you might be able to fix some stuff like this in postproduction.

Shiny objects (powder)

White objects

Rounded objects that are not on a stand and need to be repositioned

Objects with black/shiny bits (powder)

Failed 3d Scan of a crayon

Ex. Black crayon without flour

successful 3d scan of a crayon

Ex. Black crayon with flour

Bright colored objects

 

 

 

Enhancing the experience

Do you have any ideas for 3d turntable scanning? Place it below, under the list of things we have already tried!

  • I read that low light and a flat black background are best for turntable scanning. Through a few tests, we determined that the lighting in the DML is sufficient, and no background is needed to get an adequate rendering. While a black background and turning the lights off won’t hurt the scan, it doesn’t result in a better file.
  •  

 

FAQS

  • I can’t turn the scanner off using the power button? What do I do?
    • This scanner is a little finnicky, but it is supposed to be turned off by double clicking the power button. Just try to double click a few times, take your finger away for a second or two, and try again. If you can’t get it to turn off just tell somebody else. Unplugging it is a last resort that might lead to restarting the computer to get everything synced up again.
  • My scans won’t turn into a mesh. The program just quits.
    • Because we have limited RAM, this is possible. Unfortunately you will have to scan the item again, and try to save it in a lower level of detail.
  • The program stops working in the middle of my scan.
    • If the computer freezes or the program crashes it may be because of the lack of RAM. Please close any background programs and try again.
  • Do I have to recalibrate every time I scan?
    • No. You should calibrate before you start scanning any of your items, and it should be good until the next time the scanner is turned off and back on.

 

Postproduction for 3d scans

Free software like Meshmixer, Meshlab, and Netfabb Basic are great for working with STL mesh files.

 

We have Meshmixer, and we need to make instructions on that as well if anyone wants to explore it further by chance.