Search Results for author: Manuel Marques

Found 12 papers, 5 papers with code

Rotation Averaging: A Primal-Dual Method and Closed-Forms in Cycle Graphs

no code implementations29 May 2024 Gabriel Moreira, Manuel Marques, João Paulo Costeira

A cornerstone of geometric reconstruction, rotation averaging seeks the set of absolute rotations that optimally explains a set of measured relative orientations between them.

Simultaneous Localization and Mapping

Learning Visual-Semantic Subspace Representations for Propositional Reasoning

no code implementations25 May 2024 Gabriel Moreira, Alexander Hauptmann, Manuel Marques, João Paulo Costeira

Learning representations that capture rich semantic relationships and accommodate propositional calculus poses a significant challenge.

3D Human Pose Estimation with Occlusions: Introducing BlendMimic3D Dataset and GCN Refinement

2 code implementations24 Apr 2024 Filipa Lino, Carlos Santiago, Manuel Marques

In the field of 3D Human Pose Estimation (HPE), accurately estimating human pose, especially in scenarios with occlusions, is a significant challenge.

3D Human Pose Estimation

Latent Embedding Clustering for Occlusion Robust Head Pose Estimation

no code implementations29 Mar 2024 José Celestino, Manuel Marques, Jacinto C. Nascimento

Head pose estimation has become a crucial area of research in computer vision given its usefulness in a wide range of applications, including robotics, surveillance, or driver attention monitoring.

Clustering Driver Attention Monitoring +1

2D Image head pose estimation via latent space regression under occlusion settings

1 code implementation10 Nov 2023 José Celestino, Manuel Marques, Jacinto C. Nascimento, João Paulo Costeira

Head orientation is a challenging Computer Vision problem that has been extensively researched having a wide variety of applications.

Head Pose Estimation regression

Hyperbolic vs Euclidean Embeddings in Few-Shot Learning: Two Sides of the Same Coin

no code implementations18 Sep 2023 Gabriel Moreira, Manuel Marques, João Paulo Costeira, Alexander Hauptmann

Recent research in representation learning has shown that hierarchical data lends itself to low-dimensional and highly informative representations in hyperbolic space.

Few-Shot Learning Representation Learning

Scoring Cycling Environments Perceived Safety using Pairwise Image Comparisons

1 code implementation25 Jul 2023 Miguel Costa, Manuel Marques, Felix Wilhelm Siebert, Carlos Lima Azevedo, Filipe Moura

Furthermore, this approach facilitates the continuous assessment of changing cycling environments, allows for a short-term evaluation of measures, and is efficiently deployed in different locations or contexts.

A Cluster-Based Trip Prediction Graph Neural Network Model for Bike Sharing Systems

1 code implementation3 Jan 2022 Bárbara Tavares, Cláudia Soares, Manuel Marques

Good knowledge of users' transition patterns is a decisive contribution to the quality and operability of the service.

Clustering Graph Neural Network +2

Rotation Averaging in a Split Second: A Primal-Dual Method and a Closed-Form for Cycle Graphs

1 code implementation ICCV 2021 Gabriel Moreira, Manuel Marques, João Paulo Costeira

A cornerstone of geometric reconstruction, rotation averaging seeks the set of absolute rotations that optimally explains a set of measured relative orientations between them.

Subspace Segmentation by Successive Approximations: A Method for Low-Rank and High-Rank Data with Missing Entries

no code implementations5 Sep 2017 João Carvalho, Manuel Marques, João P. Costeira

We propose a method to reconstruct and cluster incomplete high-dimensional data lying in a union of low-dimensional subspaces.

Clustering

Understanding People Flow in Transportation Hubs

no code implementations28 Apr 2017 João Carvalho, Manuel Marques, João P. Costeira

Results show that our methodology is able to successfully summarize the representative patterns for such a long observation period, providing relevant information for airport management.

Clustering Management

A Context Aware and Video-Based Risk Descriptor for Cyclists

no code implementations24 Apr 2017 Miguel Costa, Beatriz Quintino Ferreira, Manuel Marques

From smartphone sequences of images, this generic framework is able to automatically identify events considering different risk criteria based on the cyclist's motion and object detection.

object-detection Object Detection

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