Nikolaos-Antonios Ypsilantis's Avatar

Nikolaos-Antonios Ypsilantis

@nikosips

Ph.D. Student @ VRG, CTU in Prague, CZ. Previously ECE @ NTUA, GR. Mainly focused on fine-grained image representations that scale.

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Latest posts by Nikolaos-Antonios Ypsilantis @nikosips

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πŸš€ new state-of-the-art on ILIAS dataset!

Curious how well the latest models can recognize particular objects?
We evaluated the base and large variants of DINOv3 and Perception Encoder (PE) on instance-level image retrieval.

See the results πŸ‘‰ vrg.fel.cvut.cz/ilias/

05.09.2025 14:18 πŸ‘ 13 πŸ” 5 πŸ’¬ 1 πŸ“Œ 1

Our work, GROVE, has been accepted to ICCV 2025! πŸŽ‰ This is collab. w. Cordelia Schmid & @josef-sivic.bsky.social.

We will release code, models and datasets within next 2 weeks.

We are also working on a search demo for the proposed datasets with user prompts!

I hope to see you all in Honolulu!

26.06.2025 08:34 πŸ‘ 24 πŸ” 4 πŸ’¬ 1 πŸ“Œ 1
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🚨 Deadline Extension

Instance-Level Recognition and Generation (ILR+G) Workshop at ICCV2025 @iccv.bsky.social

πŸ“… new deadline: June 26, 2025 (23:59 AoE)
πŸ“„ paper submission: cmt3.research.microsoft.com/ILRnG2025
🌐 ILR+G website: ilr-workshop.github.io/ICCVW2025/

#ICCV2025 #ComputerVision #AI

22.06.2025 11:01 πŸ‘ 12 πŸ” 10 πŸ’¬ 1 πŸ“Œ 0
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The Visual Recognition Group at CTU in Prague organizes the 49th Pattern Recognition and Computer Vision Colloquium with D. Karatzas, M. Masana, T. Tommasi, P. Mettes @pascalmettes.bsky.social , E. Brachmann @ericbrachmann.bsky.social and V. Stojnic @stojnicv.xyz

cmp.felk.cvut.cz/colloquium/#...

07.04.2025 13:57 πŸ‘ 34 πŸ” 10 πŸ’¬ 2 πŸ“Œ 2
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We are happy to share LPOSS: Label Propagation Over Patches and Pixels for Open-vocabulary Semantic Segmentation.

LPOSS is a training-free method for open-vocabulary semantic segmentation using Vision-Language Models.

27.03.2025 14:02 πŸ‘ 22 πŸ” 5 πŸ’¬ 1 πŸ“Œ 3

You can find easy cases in older datasets, this one mostly consists of hard examples. We created a new test dataset for instance-level retrieval to better reflect real world challenges. How does your new representation or retrieval model perform on ILIAS with 100m distractors? Accepted at CVPR'25

28.02.2025 11:49 πŸ‘ 18 πŸ” 4 πŸ’¬ 1 πŸ“Œ 0
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ILIAS is a large-scale test dataset for evaluation on Instance-Level Image retrieval At Scale. It is designed to support future research in image-to-image and text-to-image retrieval for particular objects and serves as a benchmark for evaluating foundation models and retrieval techniques.

27.02.2025 14:48 πŸ‘ 39 πŸ” 15 πŸ’¬ 2 πŸ“Œ 3
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ILIAS: Instance-Level Image retrieval At Scale

@gkordo.bsky.social, Vladan Stojnić @annetka.bsky.social Pavel Šuma, Nikolaos-Antonios Ypsilantis @nikos-efth.bsky.social Zakaria Laskar,Jiří Matas, Ondřej Chum, @gtolias.bsky.social

tl;dr: SigLIP rules. Lots of ablations
arxiv.org/abs/2502.11748
1/

24.02.2025 10:03 πŸ‘ 25 πŸ” 9 πŸ’¬ 1 πŸ“Œ 0

For PhD and MSc students interested in a research visit to Prague/VRG in 2025: we're open to hosting short-term collaborations or internships on a range of computer vision topics. If this sounds exciting, reach out by e-mail! We'd love to discuss potential projects. Some examples 🧡
#Internship #CV

12.02.2025 08:26 πŸ‘ 27 πŸ” 22 πŸ’¬ 1 πŸ“Œ 2
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Excited to present UDON at NeurIPS '24 tomorrow (Thursday 12/12)! If you are interested in a scalable training method for multi-domain image embeddings, come to poster #1410 in the East Exhibit Hall A-C of the Vancouver Convention Center from 11 am to 2 pm (PST) to discuss!

12.12.2024 01:25 πŸ‘ 12 πŸ” 6 πŸ’¬ 0 πŸ“Œ 0