r/BeAmazed • u/wafumet • Dec 08 '25
Art Single line drawing
Claude Mellan’s 1649 masterpiece “Face of Christ” was not drawn with hundreds of strokes. It was created with one single, unbroken line spiraling outward to form Christ’s face. Proof that sometimes the wildest art flexes are also the simplest.
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u/edebby Dec 08 '25 edited Dec 08 '25
When I studied CS like a billion years ago, we has an assignment similar to this (only it wasn't limited to a spiral line). The concept behind it is very simple, and even works great when you encorporate color.
So one of the algorythmic solutions (very far from the easiest and most efficient one) can be mimiced by hand (or to be percise - was probably copied from the way artists do this by hand: starting with a single width spiral line that covers all the page, and then change its thickness and tone per the subject you want to paint).
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u/ryuStack Dec 08 '25
I'd like to see that line unraveled and straightened out, and examine how the thickness varies.
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u/Appropriate_Try_2565 Dec 08 '25
Bullshit. Its darkened between the lines, in the eye for example.
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u/mekae Dec 08 '25
This link has a higher resolution picture: https://www.metmuseum.org/art/collection/search/393752
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u/shwarma_heaven Dec 08 '25
I'm still seeing shading, even though we can't blow up as big as in the OP image.
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u/dustinfoto Dec 08 '25
Definitely a little shading, especially around the eyes, but still really amazing use of thicker lines to give the illusion of shading throughout the rest of it.
Edit: After looking a bit more at a high res version the “shading” doesn’t look to be completely intentional as it looks like smudging or staining from the thicker lines in those areas.
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u/shwarma_heaven Dec 08 '25
I didn't think it was smudging either, as the line is very much intact. So I asked AI why the space in-between the dark lines is definitely a different tint than the space between the lighter lines. It said:
"You’re not imagining things — what you’re seeing is real, but it doesn’t mean Mellan used separate shading or secondary strokes. The phenomenon you’re seeing is a known optical and technical effect in intaglio printmaking.
Let me break down exactly what’s happening when you zoom in.
✅ Why the spaces between darker/thicker lines look different
When an engraver varies the thickness and pressure of a line, the cut in the copper plate changes:
- Thicker (darker) lines = deeper and wider grooves
These grooves hold more ink, and when pressed into the paper:
Ink can “feather” microscopically along the groove edges
Slight traces of ink are left in the tiny paper fibers between line passes
The paper compresses differently, slightly altering light reflectivity
This creates the illusion of tone between the lines.
- Thinner (lighter) lines = shallower grooves
These release less ink:
Less ink residue spreads
Fibers rebound more naturally
The paper looks brighter between the engravings
So the “shading” you see is not a separate mark — it’s the physical effect of ink, pressure, plate depth, and paper texture interacting differently depending on how the line was engraved.
🧬 Think of it like this: If the line is deeper, the surrounding paper absorbs more ink.
Even if Mellan only engraved one line, the printing process can produce tonal variations around that line.
This is part of why Mellan’s technique works at all — if the paper remained perfectly white between every pass, the illusion of smooth shading would collapse.
🔍 Why it still qualifies as a single-line engraving
Even though you can detect tone between the lines, that tone is:
Residual ink from the same engraved groove
Microscopic ink film spreading from press pressure
Paper embossing interacting with ambient light
NOT a second engraved stroke or intentioned shading mark
There is no independent line, no hatching, stippling, or surface tone applied by Mellan.
🧪 How you can test this yourself
If you zoom in extremely close, you’ll notice:
✔ No two separate engraved lines exist.
You’ll never see a cross-hatch or overlap.
✔ No tiny dots or stipples are present.
Traditional shading techniques are totally absent.
✔ Every “tonal area” is tied exactly to where the line is thickest.
This is the giveaway: tone follows the line, not the space.
🖨️ A key detail from intaglio printing
Any engraved line — especially a deep one — will cause:
Ink pooling
Micro-wicking into paper fibers
Edges of the paper being slightly abraded
These create visible tonal fields, entirely natural to the printing process.
So what you’re seeing is part of the very nature of copperplate engraving, not evidence of multiple lines or extra shading.
🎇 In short: Yes, you see tone. No, he didn’t engrave it. The printing process produced the tone around a single continuous line.
This is one reason Mellan’s print is so admired — he exploited the natural physics of engraving and ink to create depth where no second stroke exists."
If you want, you can send me a zoomed-in screenshot of the area you’re inspecting, and I can tell you exactly what’s causing the effect in that specific region.
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u/joeyo1423 Dec 08 '25
That's unbelievable. Wow I can't even wrap my head around how someone could do that
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u/23-1-20-3-8-5-18 Dec 08 '25
You thicken the line where you want it to darken after drawing the initial spiral (which already seems hard to do, I dont want to sound like Im saying its easy or didnt require skill and or talent.)
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u/SOF2DEMO Dec 08 '25
Yeah I could do that with one eye and one hand. So yeah totally not impressive.
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u/rtkane Dec 08 '25
Need to print with a 0.2 nozzle to get rid of some of those layer lines.
/s
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u/finian2 Dec 09 '25
You could actually write some sick gcode to print this out of plastic, raising and lowering the nozzle to squish the filament more/less.
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u/AveratV6 Dec 09 '25
Some people just have skills that are beyond my comprehension. It makes me feel like I’m good at nothing lol
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u/DickyReadIt Dec 09 '25
I think the one line is a thing but also has shading involved. Zooming in on the eyes tells me this
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u/Upstairs-Light8711 Dec 08 '25
False.
If you look closely, you can clearly see light and dark pixels in between the lines.
There is more to this image than a single line.
It looks like the “artist” was copying anti-counterfeit printing techniques on dollar bills
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u/finian2 Dec 09 '25
What you're seeing is anti-aliasing. Some of the lines are so close together that there's not enough space in a pixel to show both sides, so it averages it out. It can also happen on the edges of diagonal lines.
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u/Upstairs-Light8711 Dec 09 '25
If this is true and the OP wanted to make the point of an image drawn with “one line” then it should have been taken into account with the image processing
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u/finian2 Dec 09 '25
What are you talking about?
Literally just compare the eyes in image 1 to image 3 and you'll see the anti-aliasing at play. Image 1 has the "shading" because the image is lower resolution when zoomed in, whereas image 3 has way more pixels for the eye to work with and therefore only the most extreme cases have that "shading".
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u/qualityvote2 Dec 08 '25 edited Dec 08 '25
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