3D Scanning the “Greek Slave” by Hiram Powers


I’m Vince Rossi. I work for the Digitization Program Office. I’m here today with my colleague
Jonathan Blundell, and we’re 3D scanning the sculpture that you see behind me today. This is a Hiram Powers sculpture, and we’re using three different types of scanning technologies. One is a laser scanner, where we’re painting light on top of an object – on top of this object – and we’re capturing millions and millions of data points
that describe the surface. That captures very high-resolution detail, but it doesn’t capture color information. We’re also using a structured light scanner, which is another handheld tool, which is slightly lower-resolution, but it also captures some color information. And then finally, we see Jon getting set up. He’s shooting photogrammetry. That’s where we use a DSLR camera,
and we take photographs in such a way that we can create a 3D reconstructed model using photogrammetry algoriths. So those three datasets we’re capturing have different strengths and weaknesses. What we’re going do is take those three
different datasets and basically combine them to create one high-resolution geometric
model, with accurate color information, that we will then deliver online
using our 3D viewer at 3d.si.edu.

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