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Matthias Niessner Profile
Matthias Niessner

@MattNiessner

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Professor for Visual Computing & Artificial Intelligence @TU_Muenchen Co-Founder @synthesiaIO Co-Founder @SpAItial_AI

Munich, Bavaria
Joined March 2015
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@MattNiessner
Matthias Niessner
3 days
Heading to Hawaii for #ICCV25 โ€” with a quick Bay Area stop this week! Excited to catch up with folks โ€” ping me if youโ€™d like to meet up or chat :)
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@angelaqdai
Angela Dai
5 days
๐Ÿ“ข๐Ÿ“ข๐Ÿ“ขWe've released the ScanNet++ Novel View Synthesis Benchmark for iPhone data! ๐Ÿฅณ Test your models on RGBD video featuring real-world challenges like exposure changes & motion blur! Download the newest iPhone NVS test split and submit your results! โฌ‡๏ธ https://t.co/hLnFwifvTL
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@CoaLBViking
Coach LB Viking
4 hours
Congratulations to Noah Goodwin @NoahGoodwin08 week 9 Offensive Player of the Week. Great Job Noah! 5 TDs @BerserkerScout @CoachLakey53 @Alabama_FN @CoachBlanksSLFB @KevinMoses38 @N_W_Sports
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@MattNiessner
Matthias Niessner
6 days
In the 'early days' of modern deep learning (2012-2015) when ConvNets such as AlexNet or VGG came out, it was considered almost impractical to train an ImageNet classifier from scratch. The required compute was typically a couple of GPUs on a single desktop machine, trained over
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@angelaqdai
Angela Dai
18 days
๐Ÿš€We have PhD openings in my lab at TU Munich! Explore 3D/4D reconstruction & generation, semantic & functional understanding, and more - at the intersection of graphics, vision, and machine learning. ๐Ÿ’ผPhDs are 100% E13 positions ๐Ÿ‘‰Apply: https://t.co/A0KhPKmSbD or via ELLIS!
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@MattNiessner
Matthias Niessner
20 days
Fantastic retreat this weekend by our research groups! Internal reviews, ideas brainstorming, paper reading, and much more! Of course also many social activities -- the highlight being our kayaking trip - lots of fun :)
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@otwlv
twlv
4 days
2/ I find traders with insane stats, subscribe to their accounts, and let Alertsify auto execute their moves. Simple, effective, and profitable. ๐Ÿ’ฐ Want in on the action?
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@MattNiessner
Matthias Niessner
1 month
All six of our submissions were accepted to #NeurIPS2025 ๐ŸŽ‰๐Ÿฅณ Awesome works about Gaussian Splatting Primitives, Lighting Estimation, Texturing, and much more GenAI :) Great work by @Peter4AI, @YujinChen_cv, @ZheningHuang, @jiapeng_tang, @nicolasvluetzow, @jnthnschmdt ๐Ÿ”ฅ๐Ÿ”ฅ๐Ÿ”ฅ
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@MattNiessner
Matthias Niessner
1 month
We generate multiple videos along short, pre-defined trajectories that explore the scene in depth. Our scene memory conditions each video on the most relevant prior views while avoiding collisions. Great work by Manuel Schneider & @LukasHollein
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@MattNiessner
Matthias Niessner
1 month
We generate fully-navigable 3D scenes from text input in three stages. 1) A panoramic image scaffold defines the scene layout. 2) We expand it with video diffusion in an iterative scene generation pipeline. 3) Finally, we optimize a 3DGS scene from all generated frames.
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@MattNiessner
Matthias Niessner
1 month
Can we use video diffusion to generate 3D scenes? ๐–๐จ๐ซ๐ฅ๐๐„๐ฑ๐ฉ๐ฅ๐จ๐ซ๐ž๐ซ (#SIGGRAPHAsia25) creates fully-navigable scenes via autoregressive video generation. Text input -> 3DGS scene output & interactive rendering! ๐ŸŒ https://t.co/HBdrmU4Oqq ๐Ÿ“ฝ๏ธ https://t.co/AQr0p4uWBZ
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@TobiasKirschst1
Tobias Kirschstein
1 month
We just published v2 of the Avat3r paper with more analyses of the trained model: + More phone capture results + Comparisons with single-view methods + What happens if you: * vary number of input images? * add more train subjects? Check it out:
@MattNiessner
Matthias Niessner
8 months
๐Ÿ“ข๐Ÿ“ข ๐€๐ฏ๐š๐ญ๐Ÿ‘๐ซ ๐Ÿ“ข๐Ÿ“ข Avat3r creates high-quality 3D head avatars from just a few input images in a single forward pass with a new dynamic 3DGS reconstruction model. Video: https://t.co/2DMoTxyfzw Project: https://t.co/enJhfZkvEl Our core idea is to make Gaussian
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@TobiasKirschst1
Tobias Kirschstein
1 month
HairGS: Hair Strand Reconstruction based on 3D Gaussian Splatting (#BMVC2025) ๐Ÿ“ข We reconstruct realistic 3D hair strands from multi-view images in ~1 hour. Results show robustness to a wide range of hair styles such as challenging curly hair. Project: https://t.co/qcOgGjSq7W
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@MattNiessner
Matthias Niessner
1 month
๐Ÿ“ข๐Ÿ“ขWant to build ๐Ÿ‘๐ƒ ๐…๐จ๐ฎ๐ง๐๐š๐ญ๐ข๐จ๐ง ๐Œ๐จ๐๐ž๐ฅ๐ฌ?๐Ÿ“ข๐Ÿ“ข โžก๏ธWe're looking for Diffusion/3D/ML/Infra engineers and scientists in Munich & London. Get in touch and apply: https://t.co/atwcWtTyV5 #GenAI #foundationmodels #worldmodels #diffusion #transformers
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@LukasHollein
Lukas Hรถllein
2 months
๐Ÿ“ขCode release for 3DGS-LM (#ICCV2025)๐Ÿ“ข Gaussian-Splatting made faster by changing the underlying optimizer. It's compatible with other changes that accelerate the optimization along different axes. https://t.co/ddGPY1T5KJ
@MattNiessner
Matthias Niessner
1 year
(1/2) How to accelerate the reconstruction of 3D Gaussian Splatting? 3DGS-LM replaces the commonly used ADAM optimizer with a tailored Levenberg-Marquardt (LM). => We are ๐Ÿ‘๐ŸŽ% ๐Ÿ๐š๐ฌ๐ญ๐ž๐ซ ๐ญ๐ก๐š๐ง ๐Ÿ‘๐ƒ๐†๐’ for the same quality. https://t.co/F4uB4DpJGt https://t.co/Ju0Y2VxH7z
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@liuyuehcheng
Yueh-Cheng Liu
2 months
We will present QuickSplat at #ICCV2025! ๐ŸŽ‰ Data-driven 2DGS initialization and densification makes 3D surface reconstruction fast & accurate! ๐Ÿš€ Projcet: https://t.co/SKJ7XRWTVt Arxiv:
Tweet card summary image
arxiv.org
Surface reconstruction is fundamental to computer vision and graphics, enabling applications in 3D modeling, mixed reality, robotics, and more. Existing approaches based on volumetric rendering...
@angelaqdai
Angela Dai
5 months
๐Ÿ“ข QuickSplat: Fast 3D Surface Reconstruction via Learned Gaussian Initialization @liuyuehcheng learns 2DGS initialization, densification, and optimization priors from ScanNet++ => fast & accurate reconstruction! Project: https://t.co/mDgQxmhqkF
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@MattNiessner
Matthias Niessner
2 months
ScaffoldAvatar: High-Fidelity Gaussian Avatars with Patch Expressions (#SIGGRAPH) We reconstruct ultra-high fidelity photorealistic 3D avatars capable of generating realistic and high-quality animations including freckles and other fine facial details. We operate on patch-based
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@vriparbelli
Victor Riparbelli
3 months
We hit our first $1M+ day at @synthesiaIO a few weeks ago. 5 years ago, we literally danced on the table when our first paying customer โ€“ย a math professor โ€“ put down his credit card to pay $30 for the v1 (SS below). Time flies ๐Ÿฅน
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@TobiasKirschst1
Tobias Kirschstein
3 months
We will present Avat3r at #ICCV2025! ๐Ÿฅณ Avat3r brings animation to Large Reconstruction Models. One surprising finding was that we can get rid of any template-based deformation modeling and simply use cross-attention to an abstract facial expression code. https://t.co/EqyZcVbu4J
@MattNiessner
Matthias Niessner
8 months
๐Ÿ“ข๐Ÿ“ข ๐€๐ฏ๐š๐ญ๐Ÿ‘๐ซ ๐Ÿ“ข๐Ÿ“ข Avat3r creates high-quality 3D head avatars from just a few input images in a single forward pass with a new dynamic 3DGS reconstruction model. Video: https://t.co/2DMoTxyfzw Project: https://t.co/enJhfZkvEl Our core idea is to make Gaussian
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@MattNiessner
Matthias Niessner
3 months
Stunning voice model by @synthesiaIO: *๐„๐—๐๐‘๐„๐’๐’-๐•๐จ๐ข๐œ๐ž* -> new SotA that perseveres identity, accent, expressiveness w/o fine-tuning -> two-stage transformer (AR + NAR), each with 800M params -> curriculum training with QK-layer normalization https://t.co/F4oxWniPNx
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@GMFarinella
Giovanni M Farinella
3 months
Matthias Niessner @ ICVSS 2025!
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@MattNiessner
Matthias Niessner
4 months
TL;DR RGB-D scan as input -> compact, CAD scene representation that also features materials in order to create a digital copy that features the looks of a real environment. Great work by @ZheningHuang in collaboration with @XiaoyangWu_, F. Zhong, @HengshuangZhao, J. Lasenby
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