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Full-Text Articles in Databases and Information Systems
Modeling Boundaries Of Influence Among Positional Uncertainty Fields, Joshua P. King
Modeling Boundaries Of Influence Among Positional Uncertainty Fields, Joshua P. King
Electronic Theses and Dissertations
Within a CIS environment, the proper use of information requires the identification of the uncertainty associated with it. As such, there has been a substantial amount of research dedicated to describing and quantifying spatial data uncertainty. Recent advances in sensor technology and image analysis techniques are making image-derived geospatial data increasingly popular. Along with development in sensor and image analysis technologies have come departures from conventional point-by-point measurements. Current advancements support the transition from traditional point measures to novel techniques that allow the extraction of complex objects as single entities (e.g., road outlines, buildings). As the methods of data extraction …
Using Raster Sketches For Digital Image Retrieval, James Carswell
Using Raster Sketches For Digital Image Retrieval, James Carswell
Electronic Theses and Dissertations
This research addresses the problem of content-based image retrieval using queries on image-object shape, completely in the raster domain. It focuses on the particularities of image databases encountered in typical topographic applications and presents the development of an environment for visual information management that enables such queries. The query consists of a user-provided raster sketch of the shape of an imaged object. The objective of the search is to retrieve images that contain an object sufficiently similar to the one specified in the query. The new contribution of this work combines the design of a comprehensive digital image database on-line …