Paulo Villegas

Learn More
In order to avoid the charge of visually evaluating the quality of segmentation masks, the present paper introduces a procedure for evaluating this quality by means of algorithmically computed figures of merit. Assuming the existence of a perfect (reference) mask, generated manually or with a reliable procedure over a test set, these figures of merit take(More)
In order to complement subjective evaluation of the quality of segmentation masks, this paper introduces a procedure for automatically assessing this quality. Algorithmically computed figures of merit are proposed. Assuming the existence of a perfect reference mask (ground truth), generated manually or with a reliable procedure over a test set, these(More)
A group of four organizations from the MESH consortium (www.mesh-ip.eu) participated this year for the first time in the High Level Feature Extraction track in TRECVID. The partners were Telefónica I+D (UAM, Spain). We submitted a total of 6 runs, using different variations and configurations over a common model. With only one exception, results obtained by(More)
Most current multiplayer 3D games can only be played on dedicated platforms, requiring specifically designed content and communication over a predefined network. To overcome these limitations, the OLGA (On-Line GAming) consortium has devised a framework to develop distributive, multiplayer 3D games. Scalability at the level of content, platforms and(More)
Most current multi-player 3D games can only be played on a single dedicated platform such as computers, consoles, or cell phones, requiring specifically designed content and communication over a predefined network. In this paper we show how, by using signal processing techniques such as multi-resolution representation and scalable coding for all the(More)
Most current multi-player 3D games can only be played on dedicated platforms, requiring specifically designed content and communication over a prede-fined network. To overcome these limitations, the OLGA (On-Line GAming) consortium has devised a framework to develop distributive, multi-player 3D games. Scalability at the level of content, platforms and(More)