Ruben Wiersma @rubenwiersma.nl · 28/09/2026I love that you did this! I’ve been hoping to see more interaction between research and Blender, so this is awesome!! 010
Reposted by Ruben WiersmaAna Dodik @anadodik.bsky.social · 17/08/2026Charles Babbage intentionally designed the computer as an automation of mental labor. Today, computer graphics automates visual art production via privately governed generative models. How did we get here? Critical Labor History of Generative Models, SIGGRAPH Talks '26 🧵 1143
Ruben Wiersma @rubenwiersma.nl · 20/07/2026ALPS: low-poly vector art for the low, low price of $0.00! CALL NOW at 1-800-GET-ALPS youtu.be/HZoWIM9_SD0 #SIGGRAPH fast forwardyoutu.beGradient Descent in the ALPS SIGGRAPH 2026 Fast ForwardYouTube video by Ruben Wiersma 141
Reposted by Ruben WiersmaEmilie Yu @emxtyu.bsky.social · 17/07/2026We're holding the Sustainable Graphics Birds of a Feather event again this year at #SIGGRAPH 🌱 please join us on Tuesday at 5PM (room 512)! This is a casual meet-up format open to anyone who's interested in the topic >> add to your schedule s2026.conference-schedule.org/presentation...s2026.conference-schedule.orgPresentation - SIGGRAPH 2026 Conference Schedule 142
Ruben Wiersma @rubenwiersma.nl · 17/07/2026If you're coming to #SIGGRAPH, don't miss the 2026 Thesis Fast Forward in-person event! Recent PhD graduates will present their exciting thesis work on Monday 20 July from 10:30-11:30am in Room 404AB of the LA convention center: s2026.conference-schedule.org/presentation... 052
Ruben Wiersma @rubenwiersma.nl · 06/07/2026Plus: we show how you can preserve boundary elements well, which is especially important for problems tetrahedral meshes. Joint work with Tim Huisman, Jackson Campolattaro, Olga Sorkine-Hornung and Klaus Hildebrandt at @tudelfteemcs.bsky.social and @ethz.chlnkd.inLinkedInThis link will take you to a page that’s not on LinkedIn 040
Ruben Wiersma @rubenwiersma.nl · 06/07/2026When we presented GravoMG, a fast multigrid solver for surfaces, the first question we got was: can you make this work for tetrahedral meshes? Tomorrow, Marcel Padilla will present the answer at SMI in Istanbul. Sneak preview: yes, it's really fast. Code and paper: marcelpadilla.com/Projects/Gra... 1121
Ruben Wiersma @rubenwiersma.nl · 06/07/2026Plus: we show how you can preserve boundary elements well, which is especially important for problems tetrahedral meshes. Code and paper at marcelpadilla.com/Projects/Gra... With Tim Huisman, Jackson Campolattaro, Olga Sorkine-Hornung and Klaus Hildebrandt, @tudelfteemcs.bsky.social and @ethz.ch 000
Reposted by Ruben WiersmaAlexandre Binninger @alexbinninger.bsky.social · 26/06/2026👉 Free for personal use: boldbobbin.com 👉 And if you want to shape what gets built next, come hang out in the Discord: discord.gg/wpnXsuxdkK I would love to know what you make! 🧵boldbobbin.comBoldbobbin — The Modern Workspace for Embroidery DigitizingThe modern embroidery workspace in your browser or on your desktop. 011
Reposted by Ruben WiersmaNicole Feng @nicole--f.bsky.social · 15/06/2026I recently completed my PhD thesis, where I developed algorithms for making geometric inferences from imperfect data (i.e. incomplete and inaccurate observations/representations of shapes, like broken meshes or point clouds). A thread 🧵: 25516
Ruben Wiersma @rubenwiersma.nl · 02/06/2026New job, new papers and some new creative projects. Time for an update of rubenwiersma.nl 🎉rubenwiersma.nl Ruben Wiersma · Computer Graphics, Art and ML Ruben Wiersma, Research Scientist at Adobe Research. My research topics include computer graphics, geometry processing and machine learning. 170
Ruben Wiersma @rubenwiersma.nl · 05/05/2026Having a wonderful time at the Eurographics Conference in Aachen! I gave the longest talk of my life (3h) on the biggest screen of my life and I received the Eurographics PhD award for my thesis 🎉 A huge thanks to @eurographicsc.bsky.social and all my collaborators and supporters! 261
Reposted by Ruben WiersmaYining Karl Li @yiningkarlli.bsky.social · 03/04/2026I think this is a great article that puts to words something I've been thinking for a while about LLMs/AI/etc; as tools they clearly can be useful and are here to stay, but the real concern should be the effect it's having on the talent pipeline. (1/5) ergosphere.blog/posts/the-ma...ergosphere.blogThe machines are fine. I'm worried about us.On AI agents, grunt work, and the part of science that isn't replaceable. 2125
Reposted by Ruben WiersmaDr. Martin Skrodzki @msmathcomp.bsky.social · 12/03/2026Are you interested in #GeometryProcessing? Are you great with programming in C++? Are you a Master's/PhD student or a Postdoc? Then please apply for this project for the #GSoC. This is a great way to boost your portfolio while contributing to a widely used OpenSource library. 142
Ruben Wiersma @rubenwiersma.nl · 23/01/2026The #SIGGRAPH Thesis Fast Forward 2026 is here! Learn about the future of CG in 9 PhD theses: from Monte Carlo PDE solvers and photorealistic 3D avatars to fantasy-based rehab games and modular umbrella meshes. 🎓✨ youtu.be/FlrTZEJeEXsyoutu.beSIGGRAPH Thesis Fastforward 2026YouTube video by ACMSIGGRAPH 056
Reposted by Ruben WiersmaRuben Wiersma @rubenwiersma.nl · 07/10/2025The #SIGGRAPH Thesis Fast Forward 2026 submissions are now open! Deadline: Nov 7th 2025. Let the world know what you've been working on in your PhD! More info at research.siggraph.org/thesisff/ and check out last year's iteration youtube.com/watch?v=8esF... 044
Ruben Wiersma @rubenwiersma.nl · 07/10/2025The #SIGGRAPH Thesis Fast Forward 2026 submissions are now open! Deadline: Nov 7th 2025. Let the world know what you've been working on in your PhD! More info at research.siggraph.org/thesisff/ and check out last year's iteration youtube.com/watch?v=8esF... 044
Ruben Wiersma @rubenwiersma.nl · 18/08/2025If you're confused, I uploaded the presentation as well www.youtube.com/watch?v=jv7o...youtube.comUncertainty for SVBRDF Acquisition using Frequency Analysis - SIGGRAPH 2025YouTube video by Ruben Wiersma 163
Ruben Wiersma @rubenwiersma.nl · 18/08/2025Our fast forward for SIGGRAPH 2025. Keep SIGGRAPH weird! www.youtube.com/watch?v=sYel...youtube.comFast Forward SIGGRAPH 2025 - Uncertainty for SVBRDF Acquisition using Frequency AnalysisYouTube video by Ruben Wiersma 2166
Reposted by Ruben WiersmaRuben Wiersma @rubenwiersma.nl · 30/07/2025Mark your calendars for the #SIGGRAPH 2025 Thesis Fast Forward in-person event. Recent PhD graduates will present their thesis work and answer questions on Monday 11 August, 10:30-11:30am: s2025.conference-schedule.org/presentation... 083
Reposted by Ruben WiersmaEmilie Yu @emxtyu.bsky.social · 04/08/2025If you are interested in joining a lively and supportive discussion space about sustainability & graphics research, please join our birds of a feather event on Tue Aug. 12 - 4PM, in East Building, Room 9 🌱 Co-organized with Felix Hähnlein, Chenxi Liu, Maria Larsson, and @rubenwiersma.nls2025.conference-schedule.orgPresentation - SIGGRAPH 2025 Conference Schedule 021
Ruben Wiersma @rubenwiersma.nl · 30/07/2025Mark your calendars for the #SIGGRAPH 2025 Thesis Fast Forward in-person event. Recent PhD graduates will present their thesis work and answer questions on Monday 11 August, 10:30-11:30am: s2025.conference-schedule.org/presentation... 083
Reposted by Ruben WiersmaAnshul Kundaje @anshulkundaje.bsky.social · 17/07/2025Fabulous post by @randomwalker.bsky.social & Sayash raising the same concern many of us have about whether we're on the right track with how we're using AI for science. Everyone should read it, take a deep breath & think through the implications. www.aisnakeoil.com/p/could-ai-s...aisnakeoil.comCould AI slow science?Confronting the production-progress paradox 715769
Ruben Wiersma @rubenwiersma.nl · 14/07/2025I agree. It would be a bandaid solution for a much deeper and complex underlying problem. Applying the bandaid shouldn’t lull us into thinking things are alright, but it’s frustrating to think that such blatant faults could slip through. 020
Ruben Wiersma @rubenwiersma.nl · 14/07/2025Friendlier implementation: add this as a check during submission and notify authors during submission + reviewers during review, similar to a plagiarism checks. 000
Ruben Wiersma @rubenwiersma.nl · 14/07/2025In an ideal world authors would not submit work they can't vouch for, but I've already heard multiple accounts of papers (under review and published) having non-existent citations. We also cannot expect reviewers to check this: automated writing scales, reviewer time has a limit. 000
Ruben Wiersma @rubenwiersma.nl · 14/07/2025Simple idea to filter out (some) LLM-written papers with non-existent references: check the reference file agains DBLP and desk reject if a certain % of citations doesn't exist. 321
Reposted by Ruben WiersmaWiGRAPH @wigraph.bsky.social · 30/06/2025🎉☕ Announcing WiGRAPH Conference Coffees: SIGGRAPH 2025 Edition! ☕🎉 Are you a researcher of an underrepresented gender registered for SIGGRAPH? Do you want an opportunity to network with your peers? Learn more and sign up here: www.wigraph.org/events/2025-...tinyurl.comWiGRAPH Conference Coffee: Sign-UpWiGRAPH is organizing a SIGGRAPH 2025 conference coffee! Are you a researcher of a gender that is underrepresented at SIGGRAPH? Would you like for an opportunity to network with peers? Sign up for th... 046
Ruben Wiersma @rubenwiersma.nl · 10/07/2025Thank you!! I'm really sorry you couldn't make it, you were dearly missed! 000
Ruben Wiersma @rubenwiersma.nl · 09/07/2025The materials of my graduate school course at #SGP2025 on "Deep Learning on Meshes and Point Clouds" are live on rubenwiersma.nl/deeplearning. A 'map' for 3D deep learning, covering the basics and thoughts on when and where to use deep learning tools in 3D. 34611
Reposted by Ruben WiersmaBerend Baas @berendbaas.nl · 02/07/2025Moving to sustainable manufacturing requires new computational design tools. We show how to make new objects from old "trash". 🚮 Presented on Thursday at SGP 2025 in the Fabrication session. 084
Reposted by Ruben WiersmaDavid Levin @diwlevin.bsky.social · 18/06/2025Holding SIGGRAPH Asia 2026 in Malaysia is a slap in the face to the rights of LGBTQ+ people. Especially now, when underrepresented people need as much support as we can possibly give them ! Angry like me ? Sign this open letter to let them know. 🏳️⚧️🏳️🌈 docs.google.com/document/d/1...docs.google.comOpen Letter to the SIGGRAPH LeadershipRE: Call for SIGGRAPH Asia to relocate from Malaysia and commit to a venue selection process that safeguards LGBTQ+ and other at-risk communities. To the SIGGRAPH Leadership: SIGGRAPH Executive Commit... 13014
Ruben Wiersma @rubenwiersma.nl · 11/06/2025My hope is that it finds use in research: technical art history, computer graphics, creative tools, etc. If you find a good usecase or are interested in collaborating, please reach out, I'd love to learn about it! 3/3 020
Ruben Wiersma @rubenwiersma.nl · 11/06/2025The dataset contains hyperspectral scans of nine reconstructions of historical paintings and ten historic pigments. The code provides tools to process and load this data and utilities to work with hyperspectral data (e.g., stitching scans, conversion to RGB). 2/3 120
Ruben Wiersma @rubenwiersma.nl · 11/06/2025I'm sharing code&data of an unpublished project 🤯 During my PhD, I worked on applications of #computergraphics for #paintinganalysis. The main hurdle was the lack of #opensource code&data. I gathered my own, but didn't get to use it. Now I'm sharing it, so others can. 1/3 github.com/rubenwiersma...github.comGitHub - rubenwiersma/painting_tools: Painting Tools and DatasetPainting Tools and Dataset. Contribute to rubenwiersma/painting_tools development by creating an account on GitHub. 140
Reposted by Ruben WiersmaJCGT announcements @handle.invalid · 06/06/2025Annika Oehri, Philipp Herholz, and Olga Sorkine-Hornung, Higher Order Continuity for Smooth As-Rigid-As-Possible Shape Modeling jcgt.org/published/00... 0176
Ruben Wiersma @rubenwiersma.nl · 06/06/2025A human (who cared) might have actually centered the text in the text box 😒 030
Reposted by Ruben WiersmaEmilie Yu @emxtyu.bsky.social · 01/06/2025Ever wondered how badly we're all addicted to buying new GPUs in graphics labs? Come see our talk at #SIGGRAPH2025 to discuss how we can collectively move "Towards a sustainable use of GPUs in Graphics Research" with @elie-michel.bsky.social @axelparis.bsky.social Octave Crespel and Felix Hähnlein 25020
Ruben Wiersma @rubenwiersma.nl · 14/05/2025Ah, the classic "have you tried adding another GPU?" deadline saver 020
Ruben Wiersma @rubenwiersma.nl · 08/05/2025This was a wonderful collaboration 🤩 We developed a method that optimizes both an irregular tetrahedral grid and SDF for mesh optimization with marching tets. It recovers really detailed meshes with a fraction of the memory! 0110
Ruben Wiersma @rubenwiersma.nl · 04/05/2025Has anyone else noticed a particular style to ChatGPT comics? I wonder if they sourced or synthesized a very ‘narrow’ dataset — or maybe it’s just confirmation bias on my end. The same for fonts. 010
Ruben Wiersma @rubenwiersma.nl · 30/04/2025A longer summary and the full paper are available on the project page: svbrdf-uncertainty.github.io. Special thanks to my collaborators @vdeschaintre.bsky.social, Julien Philip, Elmar Eisemann, Milos Hasan, Fujun Luan and Krishna Mullia! 6/6svbrdf-uncertainty.github.ioUncertainty for SVBRDF Acquisition using Frequency AnalysisWe quantify uncertainty for SVBRDF acquisition from multi-view captures using entropy. The otherwise heavy computation is accelerated in the frequency domain, yielding a practical, efficient method. 020
Ruben Wiersma @rubenwiersma.nl · 30/04/2025This gives us a practical measure of uncertainty that we use to 1. guide captures for better data, 2. share data between points, and 3. guide data-based priors in a diffusion model. 5/6 100
Ruben Wiersma @rubenwiersma.nl · 30/04/2025Entropy can be expensive to compute. In our paper, we use frequency analysis to simplify and accelerate this computation. Our method takes 0.0005s, where it takes 6 minutes with a physically-based path tracer (Mitsuba), while still correlating strongly (0.9) 4/6 100
Ruben Wiersma @rubenwiersma.nl · 30/04/2025How do we know when this is the case? In our paper, we use **entropy** to measure uncertainty. We argue (and show in our experiments) that where there is high entropy, we are more likely to have high error. 3/6 110
Ruben Wiersma @rubenwiersma.nl · 30/04/2025First, an example of uncertainty. In the image on the left, it is hard to tell a matte plane from a glossy plane, while it's clear on the right. In the first case, better algorithms will not give a better estimate, because the data is limited. 2/6 100