The emergence of advanced multimedia applications is emphasizing the relevance of retrieval by contents within databases of images and image sequences. Matching the inherent visuality of the information stored in such databases, visual specification by example provides an effective and natural way to express content-oriented queries. To support this querying approach, the system must be able to interpret example scenes reproducing the contents of images and sequences to be retrieved, and to match them against the actual contents of the database. In the accomplishment of this task, to avoid a direct access to raw image data, the system must be provided with an appropriate description language supporting the representation of the contents of pictorial data. An original language for the symbolic representation of the contents of image sequences is presented. This language, referred to as spatio-temporal logic, comprises a framework for the qualitative representation of the contents of image sequences, which allows for treatment and operation of content structures at a higher level than pixels or image features. Organization and operation principles of a prototype system exploiting spatio-temporal logic to support querying by example through visual iconic interaction are expounded. >

Retrieval by contents is a major feature within databases of images, as it permits natural access to information. In order to support effectively this kind of operation, images must be associated with an appropriate description of their contents so as to provide some indexing support during the retrieval stage. To this end, appropriate languages for the representation of spatial information are required. In this paper, an original language, referred to as Spatial Logic, for the representation of spatial relationships between imaged objects is presented. A system which exploits this language to support image retrieval by contents through iconic visual interaction is also presented.

Article Free Access Share on Interactive training of virtual agents Authors: A. Del Bimbo Dipartimento Sistemi e Informatica, Universitá di Firenze, 3, via Santa Marta, 50139, Firenze, Italy Dipartimento Sistemi e Informatica, Universitá di Firenze, 3, via Santa Marta, 50139, Firenze, ItalyView Profile , E. Vicario Dipartimento Sistemi e Informatica, Universitá di Firenze, 3, via Santa Marta, 50139, Firenze, Italy Dipartimento Sistemi e Informatica, Universitá di Firenze, 3, via Santa Marta, 50139, Firenze, ItalyView Profile , D. Zingoni Dipartimento Sistemi e Informatica, Universitá di Firenze, 3, via Santa Marta, 50139, Firenze, Italy Dipartimento Sistemi e Informatica, Universitá di Firenze, 3, via Santa Marta, 50139, Firenze, ItalyView Profile Authors Info & Claims AVI '94: Proceedings of the workshop on Advanced visual interfacesJune 1994 Pages 172–181https://doi.org/10.1145/192309.192345Online:01 June 1994Publication History 1citation312DownloadsMetricsTotal Citations1Total Downloads312Last 12 Months2Last 6 weeks1 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteeReaderPDF