Abstract
To support the retrieval, fusion and discovery of visual Umultimedia information, a spatial query language for multiple data sources is needed. In this paper we describe a spatial query language which is based upon the σ-operator sequence and in practice expressible in an SQL-like syntax. The general 6-operator and temporal σ-operator are explained, and applications of the σ-query language to vertical/horizontal reasoning and hypermapped virtual world are explored.
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© 1998 Springer-Verlag Berlin Heidelberg
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Change, S.K., Jungert, E. (1998). A spatial query language for multiple data sources based on σ-operator sequences. In: Ip, H.H.S., Smeulders, A.W.M. (eds) Multimedia Information Analysis and Retrieval. MINAR 1998. Lecture Notes in Computer Science, vol 1464. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0016495
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DOI: https://doi.org/10.1007/BFb0016495
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