Gabriel Moreira

PhD student at CMU-LTI and ISR-IST

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I’m a PhD student at LTI-CMU and ISR-IST, under a CMU Portugal scholarship. I’m fortunate to be advised by Prof JP Costeira (IST), Manuel Marques (IST) and Chenyan Xiong (CMU). My research focuses on the intersection between vision and language, with an emphasis on structured and hierarchical representation learning for recognition and generation. During the summer of 2024, I joined Meta Reality Labs as a research scientist intern. Prior to my PhD, I worked on pose graph optimization and spent six months as a research intern at Airbus.

I’ve served as reviewer for AAAI, ICRA, CVPR and ICLR.

news

Jan 22, 2025 I’ll be at AISTATS 2025 in Mai Khao, Thailand, presenting our paper Learning Visual Semantic Subspace Representations.
Jun 03, 2024 I’ve join Meta Reality Labs as a research scientist intern!
May 13, 2024 I’ll be in Yokohama, at ICRA 2024, presenting VICAN.
Jan 01, 2024 I’ll be at WACV 2024, in Waikoloa, presenting our paper on Hyperbolic vs Euclidean embeddings in few-shot learning.

publications

  1. WACV
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    Fast pose graph optimization via Krylov-Schur and Cholesky factorization
    Gabriel Moreira, Manuel Marques, and João Paulo Costeira
    In Proceedings of the IEEE/CVF Winter Conference on Applications of Computer Vision (WACV) , 2021
    PDF Video
  2. AISTATS
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    Learning Visual-Semantic Subspace Representations
    Gabriel Moreira, Manuel Marques, João Paulo Costeira, and Alexander Hauptmann
    In International Conference on Artificial Intelligence and Statistics (AISTATS) - Accepted , 2025
    PDF
  3. ICCV
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    Rotation averaging in a split second: A primal-dual method and a closed-form for cycle graphs
    Gabriel Moreira, Manuel Marques, and João Paulo Costeira
    In Proceedings of the IEEE/CVF International Conference on Computer Vision (ICCV) , 2021
    PDF Video
  4. WACV
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    Hyperbolic vs Euclidean Embeddings in Few-Shot Learning: Two Sides of the Same Coin
    Gabriel Moreira, Manuel Marques, João Paulo Costeira, and Alexander Hauptmann
    In Proceedings of the IEEE/CVF Winter Conference on Applications of Computer Vision (WACV) , 2024
    PDF Video
  5. ICRA
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    VICAN: Very Efficient Calibration Algorithm for Large Camera Networks
    Gabriel Moreira, Manuel Marques, João Paulo Costeira, and Alexander Hauptmann
    In Proceedings of the IEEE International Conference on Robotics and Automation (ICRA) , 2024
    PDF Video