Class 4: 3D scanning

Last class, we learn some basic skills for designing a 3D product. This class, the skill may be less important, because we need to scan something by using 3D scanning machine and rebuild the model.

Tools

    • Step1:Understand how 3D scanning machine works

  • When we use Rihno to make and design something, we need to think a lot to compose final product. However, 3D scanning is easier than Rihno. Firstly , what is 3D scanning?3D scanning is kind of hi-tech which is used to scanning something in reality and then transport it into digtal form so that we can use software to adjust and design the model from reality.

    How can this hi-tech be achieved?We will see it from an uncomplicated angle.

  • In reality, we can utilize contact probing as a perfect analogy. Probe will touch the surface of the object to record the shape of the object. The principle is same as the 3D scanning, but 3D scanning doesn't use the practical probe, it uses light to record the shape of the object.
  • And today, we have two different 3D scanning machines. One is fixed 3D scanning machine called KinectSDK which can be used to play physical video games. Another one is called Einstein pro 3D scanning machine which can be held in hand. You can figure out from two pictures below.

    • Step2:Scanning

  • I played the scanning machine which can be handled, but it can also be operated with an auto turntable. I scanned the objects with another classmate. We choose these two objects to make something unknown.
  • One is a simple 3D model, the other one is a cute fox.After installing all the software on the computer(The computer should carry the "G" discrete graohics), we start scanning, and these are some pictures recording the course of scanning.

    • Step3:Adjust your model

  • After scanning, actually there are many useless parts which should be deleted after scanning, no matter where you do in the Meshmixer or Einstein software. Secondly, you need to check your model whether there are some holes which will affect your model's appearance. In fact, Meshmixer is used to covering these holes and doing some easy changes on the model.
  • Finish the simple processes on the initial model, it can be imported into Rhino.
  • Unfortunately, after being tranformed into mesh, Rihno can hardly edit it. Therefore, I have a question, can I transport the mesh back to the form which can be edited by Rihno again? How? I only do a few combinations on the model and I think this may be a tomb of a knight.

    • Step4:Question

    Question

    Last class, I have asked a question that how to check the practical size in Rhino, which has been solved! Today, the new question is how to transport the mesh back to the form which can be edited by the Rhino?

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