Shunsuke Saito

Director, Research Scientist @AIatMeta
Digital Human/Vision/Graphics
デジタルヒューマンの研究してます。
#pifuhd #sapiens
All opinions are my own.

[Shunsuke Saito @psyth91]

Relightable Codec Avatars is now extended to full-body! At #SIGGRAPH2025, we will present Relightable Full-body Gaussian Codec Avatars. Key contributions include learnable Zonal Harmonics and deferred learnable radiance transfer for specular! Check it out!
https://t.co/m6REfulkWr

[Shashank Tripathi @sha2nk_t]

Tomorrow evening at #ECCV2026! 🚀

Join us for the 3rd Workshop on 3D Human Understanding: Towards Human-Centric World Models.

Fantastic talks from @psyth91, @jhugestar, @dimadamen, @SiyuTang3 & @UmarIqb.

📅 Sept 8, 13:50
📍 Malmömässan B

If you work on 3D humans, robotics, embodied AI or world models, come by!

[Shashank Tripathi @sha2nk_t]

Had a great time hosting the 3rd edition of the 3D Human Understanding workshop at #ECCV2026.

Thanks to @psyth91, @jhugestar, @dimadamen, @SiyuTang3 & @UmarIqb for the amazing talks. And thanks to the audience for the great turnout.

There has never been a more exciting time for 3D Humans research.

Until the next edition! 👋

[Sadao Tokuyama @tokufxug]

Facebookやインスタ、VRのQuestやAIグラスのRay-Ban MetaのMetaによる新研究「LCA」。

100万本の動画学習により、スマホ撮影から表情や指の動きまで精密な3Dアバターを一瞬で生成可能に。

服の揺れや照明変化も自然に再現され、将来的にスタジオ級の分身がスマホで作れる世界を目指してる模様。

[A.I.Warper @AIWarper]

Sapiens2 test.

All things considered, probably the best pose I have used. Still heavily reliant on a good bbox detection though.

I am out of the loop and do not know what the "Best" bbox detection is these days.

[merve @mervenoyann]

Meta silently dropped Sapiens2 last week 🔥

a family of high-res models trained on 1B human images

> for pose estimation, body-part segmentation, surface normals, pointmaps (sota)
> 6 sizes: 0.1B → 5B params (all ViT patch 16)
> high-res: 1024×768 and 4K

[Massimiliano Viola @massiviola01]

There used to be a time when a novel architecture would do it...

But today, data is the one dictating the rules!😬

@Meta Reality Labs solved dense human-centric tasks with specialized foundation models, proving that they still hold a massive advantage over generalist ones.

[Wojciech Zielonka @w_zielonka]

I am happy to share that our STAR has been accepted to Eurographics 2026:

“How to Build Digital Humans?”

It introduces a novel taxonomy and a concise overview of the full creation pipeline, from face and body to hands, garments, and hair.

https://t.co/E8YsdKpQGF

[Astrid Wilde 🌞 @astridwilde]

Sapiens2 is the highest quality ViT backbone that now exists in the public domain. It was pretrained on the equivalent of 1/2 of all human images on Flickr. First public release by a large lab that is non-trivial to replicate. Huge public service. Well done.

[Rawal Khirodkar @rawal_khirodkar]

Introducing Sapiens2 — the next generation of our human-centric vision models

Pretrained at scale and at high resolution, Sapiens2 learns human semantics more effectively without losing fidelity, and generalizes strongly across human vision tasks.

Paper: https://t.co/c7uTv3NIBP
Accepted at ICLR 2026
Code: https://t.co/6JUUJJrV7W
Demo: https://t.co/etxRWJAexF

[Shunsuke Saito @psyth91]

@TkfmTktm 恐縮です！自信作です！

[Junxuan Li @JunxuanL]

LCA is accepted at CVPR 2026! 🚀

We introduce a pre/post-training paradigm for 3D avatars (1M in-the-wild videos ➡️ studio data).

The result? High-fidelity full-body avatars with emergent relightability and zero-shot stylization.

Project: https://t.co/liddQrFIqF

#CVPR2026

[Rawal Khirodkar @rawal_khirodkar]

Large-scale Codec Avatars: learning photorealistic avatars from millions of videos.

A massive team effort, and incredibly proud of how it turned out.

- Project: https://t.co/XMZWMDuI0P
- Paper: https://t.co/iIMbGpGoc8 #CVPR2026

[Pablo Vela @pablovelagomez1]

I've been working a lot with SAM3 and the Momentum Human Rig (MHR). I finally integrated it into the data I'm working with @rerundotio. The progression I've taken looks as follows

SAM3 + SAM3D-body on
1. a single image
2. a set of multiple images
3. a single video
4. A multiview video capture

I took inspiration from the SAM3D-body paper and built a multiview fitting optimization pipeline. This pipeline involves using the 2D keypoints from the single-view pipeline, triangulating them, and employing an L1 loss between the 2D/3D keypoints. The temporal stability isn't great, so that's the next portion I'm going to focus on.

One really frustrating thing about SAM3D-body is the lack of per-joint confidence values. It makes it harder to deal with occlusions. I'm probably going to need to use a separate model, or maybe add a confidence head.

[ゴメパパ @gomessdegomess]

毎年お馴染みlevelsfyiの年度末レポートがやってきたので気になるところだけまとめてく

メリカのトップ給与動向のまとめ

[AI at Meta @AIatMeta]

SAM 3D is helping advance the future of rehabilitation.

See how researchers at @CarnegieMellon are using SAM 3D to capture and analyze human movement in clinical settings, opening the doors to personalized, data-driven insights in the recovery process.

🔗 Learn more about SAM 3D: https://t.co/WAtASpkTdY

[AI at Meta @AIatMeta]

Introducing SAM 3D, the newest addition to the SAM collection, bringing common sense 3D understanding of everyday images. SAM 3D includes two models:

🛋️ SAM 3D Objects for object and scene reconstruction

🧑‍🤝‍🧑 SAM 3D Body for human pose and shape estimation

Both models achieve state-of-the-art performance transforming static 2D images into vivid, accurate reconstructions.

🔗 Learn more: https://t.co/yXcvts8Ogc

[Kris Kitani @kkitani]

Super excited to share the release of SAM 3D. It's been a year in the making. Two models for lifting object and people to 3D!

[Shunsuke Saito @psyth91]

これはICCVの専門家を名乗ってもいいのではないだろうか。そんなのあるのか知らないが

[ResearchPort @ResearchPort]

「ICCV2025」トップカンファレンス定点観測 vol.19
https://t.co/3inRQTU2Qn
#ICCV2025

[Jihyun Lee @jyun_leee]

I have two exciting career updates to share! 😃

1️⃣ After memorable years at KAIST, I recently joined Meta as a Postdoctoral AI Research Scientist! I’m thrilled to be part of the Codec Avatars Lab, working with Shunsuke Saito (@psyth91) — one of the few researchers I admired most during my PhD years — and his amazing team. I’m genuinely super excited about the next-generation avatar project we’re pushing forward!

2️⃣ I’m currently attending ICCV 🏖 and will be giving a keynote talk at the HANDS workshop this afternoon. If you’re interested, please join the talk at 13:40 in room 305B. If you’d like to connect or chat outside of the talk, also feel free to drop me a message!

[David Park @park_jinhyung1]

Introducing ATLAS: A high-fidelity, parametric human body model enabling precise, independent control of surface and skeletal attributes for character creation. To be presented at #ICCV2025!

Learn more about ATLAS here:
https://t.co/Iz4nnhm0rB