Modern Flying Spot Scanning

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Modern Flying Spot Scanning

Postby McGee2021 » Mon Jul 17, 2017 12:30 pm

While at the early television gathering measurements last weekend, i had the idea of constructing a new 3d scanner, because the one i already had has failed. I was pondering up some ideas, and googled to see if anybody else had the same idea as me. And a lot of people did. The idea: Creating a digital part file with a projector to act as a flying spot of light, and a camera to pick up the light, and process the light into a digital part. A scanner of this type would be relatively simple to build, needing only a turntable, a camera, a projector, and a computer to control the projector and convert the picked up light from the camera into a part file. The simplest incarnation of this idea i could find is here: https://www.thingiverse.com/thing:52850 , but it seems that the website containing the building instructions is missing.
John Logie Baird was obviously the man who sowed the seeds but did not reap the harvest.
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Re: Modern Flying Spot Scanning

Postby gary » Mon Jul 17, 2017 7:49 pm

I maybe misinterpreting your post, but the process of 3D scanning is rather simple using the DAVID Laserscanner technique, when I experimented with this (gee nearly a decade ago) the only complicated part was producing a "line of light" - I did this with a wine bottle filled with water (an optical cylinder is all you need) and a high brightness LED and I obtained reasonable results, nowadays you can get a very cheap laser line levelling device that should produce MUCH better results. I have one especially for that purpose, alas life has intervened and has, as have many interesting experiments, been put on the back burner.
Perfecting an NBTV system is like trying to slam a revolving door...
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