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Journals and Conferences
In this paper, a complete Smart Space architecture and related system prototype is presented; it is able to analyse situations of interest in a given environment and to produce contextual information related to it. Experimental results show that video information plays a major role for what concerns both situation perception and personalized context-aware… (More)
Ambient Intelligence systems, also called Smart Spaces (SS), are designed to provide users with augmented services that do not need intensive and invasive interaction efforts. To obtain this, SS main functionalities are sensing, analysis, decision, action/ communication. In the scope of this wide research field, this paper particularly deals with the… (More)
This paper describes an algorithm to compute lists of people and devices that are physically nearby to a mobile user based on the analysis of signals from existing wireless networks. The system evaluates proximity by classifying the degree of similarity of the Wi-Fi scan data through a statistical Gaussian Mixture Model. It recognizes when the devices are… (More)
Ambient Intelligence (AmI) systems aim at augmenting real environments to create Smart Spaces where users are provided with pervasive virtual services. In order to allow users to seamlessly complete their tasks across a multitude of smart devices, and across different physical locations, the AmI infrastructure must be complemented with ubiquitous… (More)
This paper presents a client/server stateless server architecture to implement collaborative data collection by means of several software tools. Each of the tools can be downloaded as needed in an " on demand " fashion. Security and accounting features are supported. An implemented example is shown based on a metric collection problem.
Java support the development of software tools that can be downloaded on-demand by users, software tools on-demand. These tools cannot be purchased like products, because they do not reside on the user’s machine. Rather, they can be used as “services.” In this paper, we propose a new paying mechanism for Electronic Commerce of software tools-on-demand, that… (More)
The widespread using of Internet creates new ways to distribute software. Currently, software companies are able to sell their software products to customers through direct downloading. This software distribution model can be extended to "rent" software services to customers and charge them based on their usage of the delivered services, but there have not… (More)
IST project INTERFACE aims at improving user interaction with web-based applications by following a “man in the machine” metaphor. Computer-animated characters will be used, acting as virtual consultants, clerks, or teachers. Parameter-based facial animation is now a mature technology, and has also been included in the MPEG4 standard. To make this… (More)
A promising technology for developing applications of tele-education concerns the use of advanced natural interfaces based on talking heads, capable of interacting with the user by means of emotional speech and facial gestures. The paper presents the latest results achieved by the IST European project INTERFACE coordinated by DIST.
The number of web-based applications exploiting three-dimensional, animated virtual characters has significantly increased in the recent past. However, the HTTP/TCP protocols used for animation delivery in the majority of existing systems fail to guarantee fast interaction over a wide range of network conditions. In the case of natural audio and video,… (More)