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Come to our #SIGGRAPH2026 talk today: Our method turns existing 3D objects into multi-touch sensors, without modifying the interior. From a scan, we sample surface-intrinsic curves that conform to mutual-cap layouts, and optimize their intersections for coverage & fabrication.

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Christian Holz

2,586 subscribers

53,043 görüntüleme • 3 ay önce •via X (Twitter)

Bilim & TeknolojiEğitim#SIGGRAPH2026
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Christian Holz profil fotoğrafı
Christian Holz3 ay önce

Our method formulates sensor design as constrained curve routing on a 3D mesh. We generate two layers of surface-intrinsic Tx/Rx curves. Through integer optimization, we select a fabrication-ready subset with uniform coverage under sensing, hardware, and geometry constraints.

Christian Holz profil fotoğrafı
Christian Holz3 ay önce

For fabrication, we unfold the 3D curves into 2D traces, vinyl-cut them from thin Kapton-copper laminate, and use projection guidance for attachment. Our fabricated bunny, mouse, bowl, and spoon achieve mean touch errors of just 0.65-1.6 mm and strong SNR.

Christian Holz profil fotoğrafı
Christian Holz3 ay önce

Andela Ilic, J. Gao, Z. Li, Y. Jiang, R. Schuchert, M. Meier, P. Herholz, C. Holz. Retrofitting Existing 3D Objects with Surface-Conforming Capacitive Sensing. ACM SIGGRAPH 2026. project: arXiv:

LF0 profil fotoğrafı
LF03 ay önce

Fun! 1000 great ideas possible with that

Pathetic Brook profil fotoğrafı
Pathetic Brook3 ay önce

This is cool as hell.

Furkan+ profil fotoğrafı
Furkan+3 ay önce

Wow so cool

EsotericHustler profil fotoğrafı
EsotericHustler3 ay önce

this is so cyberpunk (endearing) i can't even.

amy profil fotoğrafı
amy3 ay önce

So cool

sanjay prasad hs profil fotoğrafı
sanjay prasad hs3 ay önce

Oh wow! Can this also detect pressure and other things, not just touch? , But it also probably senses temperature and pressure as well. Then you could probably put this on a lot of stuff for VR and AR tech, right?

Christian Holz profil fotoğrafı
Christian Holz3 ay önce

It also detects pressure right now in the form of increased coupling, but more as an artifact due to our fabrication not by design. It's a clear direction for future work though, exactly for input control in AR/MR.

MrManderly profil fotoğrafı
MrManderly3 ay önce

Very cool. The bunny deserves to have ear rubs too though.

Christian Holz profil fotoğrafı
Christian Holz3 ay önce

challenging for surface routing due to bottleneck in geometry but working on this for v2

Mohamed Sami Zeghdar profil fotoğrafı
Mohamed Sami Zeghdar3 ay önce

Amazing concept, it can add new dimensions to input devices. Have you thought about bringing space mouse capabilities to standard ones via touch?

Frankenbyte profil fotoğrafı
Frankenbyte3 ay önce

Using the projection for sensor print placement is pretty innovative. Nice.

Christian Holz profil fotoğrafı
Christian Holz3 ay önce

Only way we found to make sure the physical sensor precisely works the way the optimized design generated, though there's got to be easier ways to get that part done in the future...

Makr3D profil fotoğrafı
Makr3D3 ay önce

Sampling conductive layouts along the existing surface is a clever way to keep the object geometry intact. The fabrication question is especially interesting: how tolerant is the method of rougher FDM surfaces and layer texture compared with a smooth scanned part?

Jake↑↑↑ profil fotoğrafı
Jake↑↑↑3 ay önce

@lushptr we need the inverse of this for robotic sensing

Christian Holz profil fotoğrafı
Christian Holz3 ay önce

@lushptr Yes! That's the reason we've developed this... as a labeling technique for hand-object contact and force.

Jake↑↑↑ profil fotoğrafı
Jake↑↑↑3 ay önce

@lushptr oh wow, youre going to do very well

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