Silvia Sellán
@silviasellan.bsky.social
Assistant Professor of Computer Graphics and Geometry Processing at Columbia University www.silviasellan.com
Reposted by Silvia Sellán
“it’s October 3rd”
Happy K-Mean Girls Day to those who celebrate
Happy K-Mean Girls Day to those who celebrate
October 3, 2025 at 6:15 PM
“it’s October 3rd”
Happy K-Mean Girls Day to those who celebrate
Happy K-Mean Girls Day to those who celebrate
Reposted by Silvia Sellán
cvoelcker.de/blog/2025/re...
I finally gave in and made a nice blog post about my most recent paper. This was a surprising amount of work, so please be nice and go read it!
I finally gave in and made a nice blog post about my most recent paper. This was a surprising amount of work, so please be nice and go read it!
a close up of a sad cat with the words pleeeaasse written below it
ALT: a close up of a sad cat with the words pleeeaasse written below it
media.tenor.com
October 2, 2025 at 9:34 PM
cvoelcker.de/blog/2025/re...
I finally gave in and made a nice blog post about my most recent paper. This was a surprising amount of work, so please be nice and go read it!
I finally gave in and made a nice blog post about my most recent paper. This was a surprising amount of work, so please be nice and go read it!
Reposted by Silvia Sellán
Best illusion I've seen in a while
Flashed Face Distortion Effect
YouTube video by de500ya
youtube.com
September 24, 2025 at 8:12 PM
Best illusion I've seen in a while
Reposted by Silvia Sellán
This is the metareview
September 18, 2025 at 6:50 PM
This is the metareview
Reposted by Silvia Sellán
How can one reconstruct the complete 3D interior of a wood block using only photos of its surfaces? 🪵
At SIGGRAPH'25 (Thursday!), Maria Larsson will present *Mokume*: a dataset of 190 diverse wood samples and a pipeline that solves this inverse texturing challenge. 🧵👇
At SIGGRAPH'25 (Thursday!), Maria Larsson will present *Mokume*: a dataset of 190 diverse wood samples and a pipeline that solves this inverse texturing challenge. 🧵👇
August 8, 2025 at 11:53 AM
How can one reconstruct the complete 3D interior of a wood block using only photos of its surfaces? 🪵
At SIGGRAPH'25 (Thursday!), Maria Larsson will present *Mokume*: a dataset of 190 diverse wood samples and a pipeline that solves this inverse texturing challenge. 🧵👇
At SIGGRAPH'25 (Thursday!), Maria Larsson will present *Mokume*: a dataset of 190 diverse wood samples and a pipeline that solves this inverse texturing challenge. 🧵👇
Reposted by Silvia Sellán
These appear to be constructed "wormholes", to go by www.reddit.com/r/googlemaps... . There's a technique to create them, but one person wrote, "I didn’t want the technique to be publicly known and easily accessible, as it is (though minor) a kind of google streetview vandalism."
From the googlemapsshenanigans community on Reddit: The moderators of Internet Roadtrip somehow placed this marker at Inkerman, New Brunswick, Canada, and used it to teleport to Denver and back.
Explore this post and more from the googlemapsshenanigans community
www.reddit.com
July 22, 2025 at 11:32 PM
These appear to be constructed "wormholes", to go by www.reddit.com/r/googlemaps... . There's a technique to create them, but one person wrote, "I didn’t want the technique to be publicly known and easily accessible, as it is (though minor) a kind of google streetview vandalism."
Reposted by Silvia Sellán
The Internet Roadtrip is now trying to cross Labrador. A 100-foot gap in Street View coverage almost forced them to turn back, but as they approached the break, someone got a friend in Labrador City to drive to the spot IRL and take and upload a panoramic photo to fix it. neal.fun/internet-roa...
Internet Roadtrip
Let's take a streetview roadtrip
neal.fun
July 22, 2025 at 11:08 PM
The Internet Roadtrip is now trying to cross Labrador. A 100-foot gap in Street View coverage almost forced them to turn back, but as they approached the break, someone got a friend in Labrador City to drive to the spot IRL and take and upload a panoramic photo to fix it. neal.fun/internet-roa...
Reposted by Silvia Sellán
"Giving pedestrians a 7-second head start at traffic lights is associated with a 33% reduction in total pedestrian injuries—both fatal and non-fatal—at New York City intersections."
New York City intersections see one-third fewer pedestrian injuries with longer head-start intervals
Giving pedestrians a 7-second head start at traffic lights—known as Leading Pedestrian Intervals (LPIs)—is associated with a 33% reduction in total pedestrian injuries—both fatal and non-fatal—at New ...
phys.org
July 22, 2025 at 3:43 PM
"Giving pedestrians a 7-second head start at traffic lights is associated with a 33% reduction in total pedestrian injuries—both fatal and non-fatal—at New York City intersections."
Reposted by Silvia Sellán
Asking the OpenAI Whisper audio model to transcribe 30 seconds of silence generates the output "ترجمة نانسي قنقر", which is "translation by Nancy Qanqar".
Nancy Qanqar is a volunteer translator of (among other things) many pirated movies, so that invites an interesting conclusion on data sources.
Nancy Qanqar is a volunteer translator of (among other things) many pirated movies, so that invites an interesting conclusion on data sources.
July 22, 2025 at 11:34 AM
Asking the OpenAI Whisper audio model to transcribe 30 seconds of silence generates the output "ترجمة نانسي قنقر", which is "translation by Nancy Qanqar".
Nancy Qanqar is a volunteer translator of (among other things) many pirated movies, so that invites an interesting conclusion on data sources.
Nancy Qanqar is a volunteer translator of (among other things) many pirated movies, so that invites an interesting conclusion on data sources.
Reposted by Silvia Sellán
![4-panel comic. (1) [Person 1 with ponytail flanked by person with short hair and another person speaking into microphone at podium] PERSON 1: In the early 2010s, researchers found that many major scientific results couldn’t be reproduced. (2) PERSON 1: Over a decade into the replication crisis, we wanted to see if today’s studies have become more robust. (3) PERSON 1: Unfortunately, our replication analysis has found exactly the same problems that those 2010s researchers did. (4) [newspaper with image of speakers from previous panels] Headline: Replication Crisis Solved](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cz73r7iyiqn26upot4jtjdhk/bafkreibwuu57ullc7vacjyno6c5z3gtyakkg2qub6cn3dbbjdpn2kaowmi@jpeg)
July 21, 2025 at 11:54 PM
Reposted by Silvia Sellán
July 19, 2025 at 8:21 PM
Reposted by Silvia Sellán
At ICML, we're presenting a paper on uncertainty-aware surface reconstruction!
Compared to previous approaches, we are able to completely remove the need for recursive linear solves for reconstruction and interpolation, using geometric GP machinery.
Check it out!
Compared to previous approaches, we are able to completely remove the need for recursive linear solves for reconstruction and interpolation, using geometric GP machinery.
Check it out!
July 17, 2025 at 6:24 PM
At ICML, we're presenting a paper on uncertainty-aware surface reconstruction!
Compared to previous approaches, we are able to completely remove the need for recursive linear solves for reconstruction and interpolation, using geometric GP machinery.
Check it out!
Compared to previous approaches, we are able to completely remove the need for recursive linear solves for reconstruction and interpolation, using geometric GP machinery.
Check it out!
Reposted by Silvia Sellán
🚨🚨 WiGRAPH CONFERENCE COFFEE @ SIGGRAPH '25 🚨🚨
Sign up now to be randomly matched with peers for a SIGGRAPH conference coffee!
Sign up now to be randomly matched with peers for a SIGGRAPH conference coffee!
🎉☕ 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-...
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-...
WiGRAPH Conference Coffee: Sign-Up
WiGRAPH 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...
tinyurl.com
July 10, 2025 at 4:39 PM
🚨🚨 WiGRAPH CONFERENCE COFFEE @ SIGGRAPH '25 🚨🚨
Sign up now to be randomly matched with peers for a SIGGRAPH conference coffee!
Sign up now to be randomly matched with peers for a SIGGRAPH conference coffee!
Reposted by Silvia Sellán
The 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.
July 9, 2025 at 9:12 AM
The 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.
Reposted by Silvia Sellán
It is with great pleasure that I share MAXMINDS 2.0, a new Max Planck program to support scholars in danger of displacement by war or natural disasters, and who have limited access to resources and institutional support.
If you know affected scholars, please share.
www.maxminds.mpg.de
If you know affected scholars, please share.
www.maxminds.mpg.de
MAXMINDS 2.0 Homepage
MAXMINDS 2.0
www.maxminds.mpg.de
July 7, 2025 at 7:30 PM
It is with great pleasure that I share MAXMINDS 2.0, a new Max Planck program to support scholars in danger of displacement by war or natural disasters, and who have limited access to resources and institutional support.
If you know affected scholars, please share.
www.maxminds.mpg.de
If you know affected scholars, please share.
www.maxminds.mpg.de
Reposted by Silvia Sellán
Speaking of SIGGRAPH, as usual I'm assembling a list of the physics animation-y subset of the technical papers, with links:
https://www.physicsbasedanimation.com/2025/05/19/siggraph-north-america-2025/
https://www.physicsbasedanimation.com/2025/05/19/siggraph-north-america-2025/
www.physicsbasedanimation.com
June 19, 2025 at 1:29 AM
Speaking of SIGGRAPH, as usual I'm assembling a list of the physics animation-y subset of the technical papers, with links:
https://www.physicsbasedanimation.com/2025/05/19/siggraph-north-america-2025/
https://www.physicsbasedanimation.com/2025/05/19/siggraph-north-america-2025/
Reposted by Silvia Sellán
I signed and encourage colleagues to do the same.
Venue selection is fraught. Inevitably attendees will encounter visa issues, distance, expense, local politics, and other challenges. This venue, however, is simply unsafe for LGBTQ+ researchers, and the leadership's defensiveness is unacceptable.
Venue selection is fraught. Inevitably attendees will encounter visa issues, distance, expense, local politics, and other challenges. This venue, however, is simply unsafe for LGBTQ+ researchers, and the leadership's defensiveness is unacceptable.
Computer Graphics as a field avoids gatekeeping. Practitioners come from many disciplines, origins and beliefs.
SIGGRAPH has historically carried this practice.
I am thus outraged at the decision to hold SIGGRAPH Asia 26’ at a venue unsafe to many.
Adding my signature. I encourage you to do too:
SIGGRAPH has historically carried this practice.
I am thus outraged at the decision to hold SIGGRAPH Asia 26’ at a venue unsafe to many.
Adding my signature. I encourage you to do too:
Open Letter to the SIGGRAPH Leadership
RE: 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...
docs.google.com
June 18, 2025 at 8:47 PM
I signed and encourage colleagues to do the same.
Venue selection is fraught. Inevitably attendees will encounter visa issues, distance, expense, local politics, and other challenges. This venue, however, is simply unsafe for LGBTQ+ researchers, and the leadership's defensiveness is unacceptable.
Venue selection is fraught. Inevitably attendees will encounter visa issues, distance, expense, local politics, and other challenges. This venue, however, is simply unsafe for LGBTQ+ researchers, and the leadership's defensiveness is unacceptable.
Reposted by Silvia Sellán
Holding 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.com/document/d/1...
Open Letter to the SIGGRAPH Leadership
RE: 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...
docs.google.com
June 18, 2025 at 2:57 PM
Holding 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.com/document/d/1...
Reposted by Silvia Sellán
Our work “Geometry in Style” will be presented at #CVPR2025 on Sunday at 4pm in ExHall D, poster 219. Drop by and say hi!
Our technique is capable of performing expressive text-driven deformations that preserve the input shape identity.
1/
Our technique is capable of performing expressive text-driven deformations that preserve the input shape identity.
1/
June 15, 2025 at 6:33 PM
Our work “Geometry in Style” will be presented at #CVPR2025 on Sunday at 4pm in ExHall D, poster 219. Drop by and say hi!
Our technique is capable of performing expressive text-driven deformations that preserve the input shape identity.
1/
Our technique is capable of performing expressive text-driven deformations that preserve the input shape identity.
1/
Reposted by Silvia Sellán
This is good. I’ve been willing to ignore “AI gives people religious mania” just because it sounds like the classic satanic panic sparked by every trend from the Beatles to D&D. But Andy runs the numbers and confirms.
I think most of the articles recently about AI turning its users delusional don't make much sense when you consider the numbers. Wrote a new post about that here: andymasley.substack.com/p/stories-of...
Stories of AI turning users delusional don't make sense when you look at the numbers
A lot of people using AI have bad mental health, because a lot of people have bad mental health, and a lot of people are using AI
andymasley.substack.com
June 11, 2025 at 2:12 AM
This is good. I’ve been willing to ignore “AI gives people religious mania” just because it sounds like the classic satanic panic sparked by every trend from the Beatles to D&D. But Andy runs the numbers and confirms.
Reposted by Silvia Sellán
MIT News today features a paper with fun examples coming out this summer by our brilliant PhD student Leticia Mattos Da Silva, postdoc—and Columbia professor in a matter of days!— @silviasellan.bsky.social, and PhD student collaborator Natalia Pacheco-Tallaj. news.mit.edu/2025/animati... Flubber!
Animation technique simulates the motion of squishy objects
MIT researchers developed a computationally efficient method that could enable artists to design realistic simulations of elastic objects, like bouncy or squishy characters, for animated movies or vid...
news.mit.edu
June 6, 2025 at 1:15 PM
MIT News today features a paper with fun examples coming out this summer by our brilliant PhD student Leticia Mattos Da Silva, postdoc—and Columbia professor in a matter of days!— @silviasellan.bsky.social, and PhD student collaborator Natalia Pacheco-Tallaj. news.mit.edu/2025/animati... Flubber!
We’re in the MIT news! Read about Leticia’s amazing new SIGGRAPH paper and the most fun I’ve had during my time at MIT! news.mit.edu/2025/animati...
Animation technique simulates the motion of squishy objects
MIT researchers developed a computationally efficient method that could enable artists to design realistic simulations of elastic objects, like bouncy or squishy characters, for animated movies or vid...
news.mit.edu
June 6, 2025 at 1:01 PM
We’re in the MIT news! Read about Leticia’s amazing new SIGGRAPH paper and the most fun I’ve had during my time at MIT! news.mit.edu/2025/animati...
Reposted by Silvia Sellán
Selena's #Siggraph25 work found a simple, nearly one-line change that greatly eases neural field optimization for a wide variety of existing representations.
“Stochastic Preconditioning for Neural Field Optimization” by Selena Ling, Merlin Nimier-David, Alec Jacobson, & me.
“Stochastic Preconditioning for Neural Field Optimization” by Selena Ling, Merlin Nimier-David, Alec Jacobson, & me.
June 3, 2025 at 12:43 AM
Selena's #Siggraph25 work found a simple, nearly one-line change that greatly eases neural field optimization for a wide variety of existing representations.
“Stochastic Preconditioning for Neural Field Optimization” by Selena Ling, Merlin Nimier-David, Alec Jacobson, & me.
“Stochastic Preconditioning for Neural Field Optimization” by Selena Ling, Merlin Nimier-David, Alec Jacobson, & me.
Reposted by Silvia Sellán
Our quantitative analysis of papers let us question what GPUs people use for graphics research, and how that compares to general consumers' hardware.
June 1, 2025 at 2:16 AM
Our quantitative analysis of papers let us question what GPUs people use for graphics research, and how that compares to general consumers' hardware.
Reposted by Silvia Sellán
Ever 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
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
![MOTIVATION
Graphical Processing Units (GPUs) are at the core of Computer Graphics research. These chips are critical for rendering images, processing geometric data, and training machine learning models. Yet, the production and disposal of GPUs emits CO2 and results in toxic e-waste [1].
METHOD
We surveyed 888 papers presented at SIGGRAPH (premier conference for computer graphics research), from 2018 to 2024, and systematically gathered GPU models cited in the text.
We then contextualize the hardware reported in papers with publicly available data of consumers’ hardware [2, 3].
REFERENCES
[1] CRAWFORD, KATE. The Atlas of AI: Power, Politics, and the Planetary Costs of Artificial Intelligence. Yale University Press, 2021.
[2] STEAM. Steam Hardware Survey. https://store.steampowered.com/hwsurvey
[3] BLENDER. Blender Open Data. https://opendata.blender.org](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:gpta66q3ots5ia23kvfzpu5r/bafkreidqnyftshkcmtpzqlxsknnvcn34xszafururgdixddtcuzrmwloqq@jpeg)
June 1, 2025 at 2:12 AM
Ever 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
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