Khoa Tuan Nguyen
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khoant.bsky.social
Khoa Tuan Nguyen
@khoant.bsky.social
Enjoy learning new things. PhD student at Ghent University Global Campus in Korea.
Reposted by Khoa Tuan Nguyen
‼️ Major update to the #ACEZero code base. We added the capabilities of the #ICCV2025 paper on Scene Coordinate Reconstruction Priors.

Gives you, e.g., a RGB-D version of ACE0. In the snipped below, I jointly reconstruct multiple RGB-D scans of ScanNet.

github.com/nianticlabs/...
November 10, 2025 at 9:49 AM
Reposted by Khoa Tuan Nguyen
🌟 Scene Coordinate Reconstruction Priors at #ICCV2025 🌟

Can we learn what a successful reconstruction looks like, and use this knowledge when reconstructing new scenes?

Explainer: youtu.be/RkV6U5xYc20
Project Page: nianticspatial.github.io/scr-priors

Inspiring work by Wenjing Bian et al.!
October 15, 2025 at 7:36 AM
Reposted by Khoa Tuan Nguyen
🔥 ACE-G, the next evolutionary step of ACE at #ICCV2025 🔥

We disentangle coordinate regression and latent map representation which lets us pre-train the regressor to generalize from mapping data to difficult query images.

Page: nianticspatial.github.io/ace-g/

Stellar work by Leonard Bruns et al.!
October 14, 2025 at 8:24 AM
Reposted by Khoa Tuan Nguyen
⏩ FastForward ⏩ A new model for efficient visual relocalization. Accurate camera poses without building structured 3D maps.

nianticspatial.github.io/fastforward/

Work by @axelbarroso.bsky.social, Tommaso Cavallari and Victor Adrian Prisacariu.
October 2, 2025 at 8:48 AM
Reposted by Khoa Tuan Nguyen
The most important aspect when facing data shift is the type of shift present in the data. I will give below a few examples of shifts and some existing methods to compensate for it.🧵1/6
July 1, 2025 at 9:39 AM
Reposted by Khoa Tuan Nguyen
Logarithmic maps are incredibly useful for algorithms on surfaces--they're local 2D coordinates centered at a given source.

Yousuf Soliman and I found a better way to compute log maps w/ fast short-time heat flow in "The Affine Heat Method" presented @ SGP2025 today! 🧵
July 2, 2025 at 6:23 AM
Reposted by Khoa Tuan Nguyen
Yet another quadratic Bezier distance function 🧵,slightly cleaner than last time

Premise: We want to calculate the distance to a quadratic Bezier curve, with as little effort as possible, ideally without evaluating the full quadratic Bezier curve itself, which involves solving a cubic equation.
June 27, 2025 at 10:43 PM
Reposted by Khoa Tuan Nguyen
#DLCProTip: Did you know you can use unsupervised learning to adapt a trained model on the fly to your video in DeepLabCut!?

When you run video analysis, check out “video adaptation” - it reduces jitter and provides better poses! ⬇️

www.nature.com/articles/s41...
May 13, 2025 at 8:57 AM
Reposted by Khoa Tuan Nguyen
Hey graphics friends, has anyone seen an algorithm to make a blue noise point sequence, that used a density map? (non uniform points)

I have some ideas to make some, but i am not finding any prior work and think there's a good chance it exists but im just not finding it.
June 8, 2025 at 5:34 PM
Reposted by Khoa Tuan Nguyen
Implicit surfaces are great, but if you are not Inigo Quilez, it's really hard to control how they look...

That's why I'm really proud to annonce our Eurographics 2025 paper: "Implicit UVs: Real-time semi-global parameterization of implicit surfaces".
May 10, 2025 at 6:20 PM
Reposted by Khoa Tuan Nguyen
I'm very excited to share notes on Probabilistic AI that I have been writing with @arkrause.bsky.social 🥳

arxiv.org/pdf/2502.05244

These notes aim to give a graduate-level introduction to probabilistic ML + sequential decision-making.
I'm super glad to be able to share them with all of you now!
February 11, 2025 at 8:19 AM
Reposted by Khoa Tuan Nguyen
I wrote a blog post on my implementation of the Surfel maintenance pipeline from my Surfel Radiance Cascades project. Most of what I learned came from "SIGGRAPH 2021: Global Illumination Based on Surfels" a great presentation from EA SEED :)
m4xc.dev/blog/surfel-...
MΛX - Surfel Maintenance for Global Illumination
A comprehensive explanation of my implementation of Surfel probe maintenance.
m4xc.dev
January 25, 2025 at 3:45 PM
Reposted by Khoa Tuan Nguyen
To kick off using Bluesky: our new dataset called Oxford Spires. Synchronised, multi-color cameras and lidar in multiple Oxford colleges. Ground-Truth highly accurate 3D maps from tripod scanners. The ideal basis for NeRF/3DGS SLAM research.
dynamic.robots.ox.ac.uk/datasets/oxf...
December 9, 2024 at 10:29 AM
Reposted by Khoa Tuan Nguyen
See who has blocked you 🫣 and added you to a list on Bluesky.

clearsky.app
November 28, 2024 at 11:12 PM
Reposted by Khoa Tuan Nguyen
Stop watching videos, start interacting with worlds.

Stoked to share CAT4D, our new method for turning videos into dynamic 3D scenes that you can move through in real-time!
cat-4d.github.io
arxiv.org/abs/2411.18613
November 28, 2024 at 2:52 AM
Reposted by Khoa Tuan Nguyen
I wrote this code to follow the same people someone else is following. I figured that would fix my feed esp if someone is having a good experience I can just "have what they are having"

gist.github.com/hamelsmu/fb9...
"I'll have what they are having" for bluesky. The motiviation is to mimic who someone else is following who reports they are having a good experience on bluesky!
"I'll have what they are having" for bluesky. The motiviation is to mimic who someone else is following who reports they are having a good experience on bluesky! - follow_theirs.py
gist.github.com
November 24, 2024 at 3:37 PM
Reposted by Khoa Tuan Nguyen
Anne Gagneux, Ségolène Martin, @quentinbertrand.bsky.social Remi Emonet and I wrote a tutorial blog post on flow matching: dl.heeere.com/conditional-... with lots of illustrations and intuition!

We got this idea after their cool work on improving Plug and Play with FM: arxiv.org/abs/2410.02423
November 27, 2024 at 9:00 AM
Reposted by Khoa Tuan Nguyen
Hello Bluesky! 🔵 We start our account by having our third guess for Ask Me Anything session #3DV2025AMA!

Noah Snavely @snavely.bsky.social from Cornell & Google DeepMind! 🌟

🕒 You have now 24 HOURS to ask him anything — drop your questions in the comments below!

Keep it engaging but respectful!
November 26, 2024 at 3:33 PM