What's in an Image?

Authors:
Gilberto Camara;Max J. Egenhofer;Frederico T. Fonseca;Antônio Miguel Vieira Monteiro
Affiliations:
-;-;-;-
Venue:
COSIT 2001 Proceedings of the International Conference on Spatial Information Theory: Foundations of Geographic Information Science
Year:
2001

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Abstract

This paper discusses the ontological status of remote sensing images, from a GIScience perspective. We argue that images have a dual nature--they are fields at the measurement level and fiat objects at the classification level--and that images have an ontological description of their own, distinct and independent from the domain ontology a domain scientist uses. This paper proposes a multi-level ontology for images, combining both field and object approaches and distinguishing between image and user ontologies. The framework developed contributes to the design of a new generation of integrated GISs, since two key benefits are achieved: (1) the support for multiple perspectives for the same image and (2) an emphasis on using images for the detection of spatial-temporal configurations of geographic phenomena.