[HN Gopher] Touchable Bokeh - 3D Printed Wet Plates [video]
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Touchable Bokeh - 3D Printed Wet Plates [video]
Author : brudgers
Score : 32 points
Date : 2021-01-16 02:38 UTC (1 days ago)
(HTM) web link (www.youtube.com)
(TXT) w3m dump (www.youtube.com)
| person_of_color wrote:
| Any software to generate these as stl files?
| speps wrote:
| https://3dp.rocks/lithophane/
| majormjr wrote:
| I use FreeCAD and the lithophane addon.
| cptskippy wrote:
| Tons, this technique has been around for quite sometime and the
| process is pretty mature.
| amelius wrote:
| Is this useful for visually impaired people?
| wegs wrote:
| It looks interesting, but I hate when I need a video to
| understand something. Can someone explain what this is using
| text?
| bsdubernerd wrote:
| I'm not sure if that's exactly the same, but certainly looks
| like a "lithophane" for which you'll be able to find much more
| information. Also the way this was printed also certainly looks
| like it was made by one of the tools already available to
| produce these (these became a thing since some years now in
| 3d-printing).
|
| Essentially, the brightness of the picture is mapped to
| thickness. Bright spots in the image correspond to thin areas
| in the plate.
|
| The effect is that when back light hits the plate, more light
| will be able to pass through thin areas, restoring the original
| image.
|
| The plate is also "3d" in nature because of this, so it looks
| like a bumpmap texture without light and I can share with the
| author that's it's extremely cool to see/touch also without
| lighting.
|
| The plate is commonly printed vertically (as it results in
| higher cross-section resolution in the FDM printing process),
| and using an arch layout is common as well as it makes it self-
| standing.
| AuryGlenz wrote:
| They're (in this case) also created from wet plate collodion
| images - tintypes or ambrotypes. It's an old photographic
| process.
| cptskippy wrote:
| Photographer creates video narrative to low key advertise that
| he sells lithopanes of his work.
|
| Lithopanes are a technique someone developed years ago for
| printing a photograph on an FDM 3D Printer. They work by
| varying the thickness of the print to control the amount of
| light that passes through. The result is a monochrome image you
| can see when held up to light and feel with your fingers.
|
| In the video the gentleman, who seems to be a photographer
| specializing in very early photographic techniques, shares a
| story of how he got a 3d printer during the pandemic and
| created some lithopanes of his work. He low key mentions you
| can buy them.
|
| If you're interested in lithopanes this video is at best a
| definition of the technique and demonstration of results.
| [deleted]
| agravier wrote:
| Essentially, a 3D printed inverted luminance map, curved a bit
| to be able to stand on a flat surface. Looks nice with a source
| of light behind and when made from a photo with lots of
| contrast.
| andybak wrote:
| Surely this is a better link: http://blog.markus-
| hofstaetter.at/2021/01/touchable-bokeh-3d...
|
| It contains the video but allows those of us that dislike video
| to view text/images (i.e. skimmable info).
|
| Sadly in this case the text doesn't add much info but at least
| it's something. And the video is still right there.
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(page generated 2021-01-17 23:01 UTC)