[HN Gopher] In a Way, 3D Scanning Is over a Century Old
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In a Way, 3D Scanning Is over a Century Old
Author : helsinkiandrew
Score : 60 points
Date : 2022-10-07 16:52 UTC (3 days ago)
(HTM) web link (hackaday.com)
(TXT) w3m dump (hackaday.com)
| Silverback_VII wrote:
| "3d scanning is as old as humanity" - The Roman emperor Gluteus
| Maximus
| tmilard wrote:
| Yes, The target ( of Scanning 3D objects).
|
| But not the solution witch I bet, has had many differents
| solutions.
|
| This one solution ( 'slices od 2D'), one century old, still
| used in 3D laser scanning and printing, is poised to have a
| more robust and fine grained one.
| 082349872349872 wrote:
| Ancient egyptians had 2d pantographs attached to linked
| turntables, enabling them to point in 3d.
| kragen wrote:
| It's possible, and one candidate explanation for how they
| were able to produce multiple identical immense statues at
| widely separated locations, but as far as I know nobody has
| found such a pantograph or turntable, nor drawings of it or
| writings about it, nor any other kind of evidence that this
| was the method they used.
| fortran77 wrote:
| Hackaday isn't the worst "repackager", but I always like to go to
| the original source for the article:
| https://www.messynessychic.com/2022/09/28/more-than-100-year...
| tingletech wrote:
| My old director made a 3d scan of Obama when he was at the
| Smithsonian. He keeps a 3d printed Obama bust on his desk.
| tmilard wrote:
| It is a good reminder that today we are not more clever with
| time. We come here only with more tools, easier tools and more
| time to think...
|
| Also a reminder that the 3D scanning is still unchanged after 1
| century. Odd...
|
| - But why ? 1) Because it was the good solution ? Maybe....
|
| 2) Because no one has had the new-thing that will level up the
| way we do 3D scanning ? I hope so
| charcircuit wrote:
| >Because no one has had the new-thing that will level up the
| way we do 3D scanning ?
|
| There isn't one way to do 3d scanning. Unless you mean any
| method that involves taking 1 or more pictures is the same
| method.
| syntaxing wrote:
| I think it's also important to note that these said tools are
| more readily available to whoever wants to use them. Hard to
| say because there's not much information about Francois Willeme
| but I'm guessing he's relatively wealthy to be able to pull
| something off like this.
| krisoft wrote:
| > Also a reminder that the 3D scanning is still unchanged after
| 1 century.
|
| That is simply false. We have interactive games based on cheap
| costumer 3d scanners. [1] We have 3d scanners in our pockets.
| [2] We have 3d scanners which can scan millions of points per
| second from the environment for hundreds of meters of distance.
| [3]
|
| But yeah, if we ignore all the things which changed, then it
| turns out everything is "still unchanged".
|
| 1: https://en.wikipedia.org/wiki/Kinect 2:
| https://www.techradar.com/news/what-is-a-lidar-scanner-the-i...
| 3: https://www.mapix.com/wp-
| content/uploads/2018/07/63-9378_Rev...
| rwmurrayVT wrote:
| Our newest product is a very advanced 3D Scanner[1].
| Photogrammetry, structured light scanning, phase shift laser
| radar, and now non-contact via an interferometry. 3D Scanning
| is alive and well with various methods.
|
| [1]https://apimetrology.com/ladar/
| SnooSux wrote:
| I assumed the OP was talking more about the math, which is
| also not true. The method mentioned in the article only takes
| into account the silhouette of the target. In my experience,
| that's where a lot of the information comes from, but to get
| that fine detail most contemporary methods incorporate a lot
| of information about the target itself like keypoints and
| lighting interactions.
| antegamisou wrote:
| No mention of photogrammetry, or its pioneer Meydenbauer in 1858?
|
| http://www.theulegium.de/fileadmin/user_upload/Texte/Meydenb...
| tomcam wrote:
| Fascinating! Thank you
| contingencies wrote:
| Great share. I also assumed the article was about
| photogrammetry, was surprised at the contents, and was unaware
| of the significance of Meydenbauer. I wonder whether he would
| side with the architects or the software world on the
| desirability of our modern use of the title 'architect' in the
| field of computing... I suppose this is less of a debate in
| German, since it's probably _ManyWordsTogetherArchitect_ and
| thus clearly defined.
| pkdpic wrote:
| Great quick read, tldr they took a bunch of bullet time photos in
| a circle around someone, made a bunch of vertical wood cutouts of
| the silhouettes and then wedged them together vertically /
| radially and filled the gaps with clay. The freaky picture helps.
|
| Speaking of this does ANYONE have a suggestion for a 3D scanning
| service / app that could capture reasonable detail on a warhammer
| / hotwheel sized model?
|
| I've asked around and gotten the "don't bother just remake it in
| blender" response pretty consistently... but I don't wana' (ie
| its not realistic). Somebody please help if you can.
|
| Or I guess I could get a bunch of cameras and sheets of wood...
| anon_cow1111 wrote:
| >does ANYONE have a suggestion for a 3D scanning service / app
| that could capture reasonable detail on a warhammer / hotwheel
| sized model?
|
| Someone sent me this a while back, quick tutorial using
| Meshroom and an ordinary camera;
|
| https://peterfalkingham.com/2019/01/16/small-object-photogra...
|
| I imagine for small objects you'll want to set the camera
| further back and zoom in rather than putting it close up, it'll
| probably be easier for the software to interpret (for the same
| reason that putting the camera close to your face makes your
| nose look huge).
| rwmurrayVT wrote:
| Mail it to me and I will with 9D LADAR. The point cloud data
| will include color data on the points. Fill out a contact form
| on our website asking for Robert.
|
| https://apimetrology.com/ladar/
| jonas21 wrote:
| Scaniverse (iOS app) works pretty well on figurines and small
| models, for example:
|
| -
| https://sketchfab.com/3d-models/kitzreh20-a37b3f78b38048d286...
|
| -
| https://sketchfab.com/3d-models/taurenscaniverse-c78b86cfe9c...
| roywiggins wrote:
| Vaguely relatedly, the "Cast Court" in the Victoria & Albert
| museum in London is full of 19th-century models of various famous
| bits of architecture and sculpture, mostly done by plaster cast:
|
| https://www.vam.ac.uk/collections/cast-collection
|
| It's a really fun visit as a progenitor of modern enthusiasm for
| reproductions of famous objects and monuments.
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