19 citations · 43 across the 19 of their papers we have counts for
3 papers · 2 filters
Subspace Segmentation by Successive Approximations: A Method for Low-Rank and High-Rank Data with Missing Entries
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. Exploring the sparse representation model, we jointly…
Understanding People Flow in Transportation Hubs
João Carvalho, Manuel Marques, João P. Costeira
In this paper, we aim to monitor the flow of people in large public infrastructures. We propose an unsupervised methodology to cluster people flow patterns into the most typical an…
A Context Aware and Video-Based Risk Descriptor for Cyclists
Miguel Costa, Beatriz Quintino Ferreira, Manuel Marques
Aiming to reduce pollutant emissions, bicycles are regaining popularity specially in urban areas. However, the number of cyclists' fatalities is not showing the same decreasing tre…