Augusto Celentano

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In a navigation-oriented interaction paradigm, such as desktop, mixed and augmented virtual reality, recognizing the user needs is a valuable improvement, provided that the system is able to correctly anticipate the user actions. Methodologies for adapting both navigation and content allow the user to interact with a customized version of the 3D world,(More)
In this paper we describe the results of a study on similarity evaluation in image retrieval using color, object orientation and relative position as content features, in a framework oriented to image repositories where the semantics of stored images are limited to a specific domain. The focus is not on a complete description of image content, which is(More)
In this paper we present a model and an adaptation architecture for context-aware multimodal documents. A compound virtual document describes the different ways in which multimodal information can be structured and presented. Physical features are associated to media instances, while properties describe the context. Concrete documents are instantiated from(More)
— The SECAS Project (Simple Environment for Context Aware Systems) deals with the adaptation of applications to the context (user preferences and environment, terminal, etc.). We aim to develop a platform which makes the services, data and the user interface of applications adaptable to different context situations. In this domain, researches have(More)
Multimedia documents are an effective way to present different kinds of information, since the integration of different media types gives more expressive power and opportunities to catch the user attention. A multimedia report is a multimedia presentation built on a set of data returned by one or more queries to multimedia repositories, integrated according(More)
This paper presents a synchronization model for hypermedia presentations. Several media, continuous, like video and audio files, and non-continuous, like text pages and images, are delivered separately in a distributed environment like the World Wide Web, and presented to the user in a coordinated way. The model is based on a set of synchronization(More)
In this paper we describe an authoring environment which allows the author to set up and test a complex mul-timedia presentation by defining the synchronization relationships among media. The main component of the au-thoring environment is a visual editor based on a graph notation, in which the nodes are media objects involved in a multimedia presentation,(More)