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Innovations to 3D Scan Reflective Materials

by • July 26, 2016 • No Comments

Near the front of the Studio section of SIGGRAPH is a sizeable, spherical contraption. Covered in circuitry and emanating an intense light, this object looks like a thing of science fiction. In actuality, the object is the output of a research project. This high fidelity 3D scanner is capable of solving one of the largest
problems with current innovation right now; scanning reflective surfaces.

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I spoke with Borom Tunwattanapong, founder of Lumio3D and he explained how the scanner works.

“This is a 3D reflectance and geometry scanner. It can project basis illumination on the object within. We extract the reflection of the object out and use multi- view stereo algorithm to reconstruct the geometry. The final outcome is an accurate geometry with the texture on it, which
is viewable in 3D.”

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Tunwattanapong demonstrated by placing a soft drink
can within of the scanner. A pattern of flashing lights strobed and thecamera snapped shots 360 degrees around the can.

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“When we project the basis illumination we can extract a few information, which include a diffuse map, specular and a normal map. The diffuse map can show the texture, the specular show what is reflective reflectiveness and the normal map shows the angles angles of the surface.”

These textures can be reassembled back onto the 3D version file in many software packages.

Given the complexity of this machine, I was cheerful to learn which
parts of the machine were 3D printed by Shapeways. Tunwattanapong pointed out which
he utilized
Black Strong and Flexible to manufacture the many complex parts for the structure which
holds the components together. He chose to print in this material for the reason
of it was much less expensive than CNCing the part. The turnaround time in addition
proved to be faster than if he had cut out the parts of metal, while yet being sturdy
and dense to hold the scanner together.

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Tunwattanapong predicts which
this scanner may be useful in the making industry to assist engineers analyze the structural integrity of parts, as well as the medical industry for scanning organic materials. Additionally, this tool may be utilized
to scan common household objects, artwork and jewelry which
have reflective surfaces.

We’re excited to the next of 3D scanning, and innovation like the Lumio3D can go on
to expand the types of materials capable of being captured and turned into a printable 3D object.


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