Filipe Freitas

Learn More
OBJECTIVE This paper proposes an indexing and retrieval solution to gather information from distributed DICOM documents by allowing searches and access to the virtual data repository using a Google-like process. METHODS AND MATERIALS The medical imaging modalities are becoming more powerful and less expensive. The result is the proliferation of equipment(More)
Peer-to-peer overlays provide an ideal substrate for worm propagation. P2p-assisted worms have the potential to spread faster than traditional scanning worms because they have knowledge of a subset of the overlay nodes, and choose these nodes to propagate themselves ; and also because they can avoid traditional detection mechanisms. We present a novel(More)
  • Lorenz Gerstmayr, Alexandre Bernardino, José Santos, Victor, Etienne Gracias, Ricardo Grossman +10 others
  • 2004
The future aim of the work described in this report is appearance–based topological navigation of an autonomous aerial vehicle, namely a blimp, over an urban area. Here we only address the selection of good landmarks, which is one subproblem of the problems that still have to be solved in order to achieve topological navigation. Landmark selection methods(More)
Artificial neural networks (ANNs) have been widely used over the last three decades. During this period, many hardware and software solutions have been developed and today a new user entering the field can make a fast trial to this artificial intelligence solution with commercial software and hardware, instead of developing a solution from scratch thus(More)
Topological worms, such as those that propagate by following links in an overlay network, have the potential to spread faster than traditional random scanning worms because they have knowledge of a subset of the overlay nodes, and choose these nodes to propagate themselves; and also because they can avoid traditional detection mechanisms. Furthermore, this(More)
  • 1