Prototype Application of a Sketch-Based Query User Interface for GIS

Abstract

The objectives of this effort were to explore and study other interface/interaction models between a user and a GIS database besides textual SQL based methods. Sketching (a simplified stylized drawings/diagram) is a "natural" way to express and define relationships that are frequently used when accessing GIS databases, (e.g., find a road intersection on the north side of a lake near a town, or list the houses near to this portion of the river). The effort analyzed the relationships that are defined in (and between) objects in sketches, and methods to derive queries from those defined relationships in and among them. This prototype was used as a tool in the research performed on sketch relationship query extractions done for this effort.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2000
Accession Number
ADA378162

Entities

People

  • Andreas D. Blaser
  • Max J. Egenhofer

Organizations

  • University of Maine

Tags

Communities of Interest

  • Autonomy
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Computer Programming
  • Computer Vision
  • Computers
  • Databases
  • Detection
  • Extraction
  • Geographic Information Systems
  • Information Systems
  • Language
  • Military Research
  • Models
  • Natural Languages
  • Operating Systems
  • Prototypes
  • User Interface

Fields of Study

  • Computer science

Readers

  • Database Systems and Applications
  • Hydraulic Engineering.
  • Theoretical Analysis.