One of my takeaways from Automate was
that 3D is no longer a novelty, at least not as regards robot
guidance. Pretty much every robot integrator with a Fanuc on their
stand also had 3D system in place. These all used the same DLP
approach where a series of lines are projected in quick succession
onto the target surface.
Andy Wilson summarizes this, and all
the other options, in “Choosing
a 3D vision system for automated robotics applications”
which was published on the Vision Systems Design website back in
December 2014. It’s a very comprehensive and I don’t think he
omits a single camera-based method. (He doesn’t mention LIDAR or
time-of-flight methods.)
If you have any interest in robot
guidance I’d encourage you to read his article. Even if you’re
more interested in part inspection, as I am, it’s an excellent
primer. Ever helpful, Andy includes links to the many camera and
illumination companies with something to offer the 3D imaging world.
It’s something you might want to bookmark.
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