A Tile-Based System for the Rapid Display of Symbolized Digital Nautical Chart Data

Abstract

For efficient retrieval and display of Digital Nautical Chart (DNC) imagery, a tiled-based approach is presented. By preprocessing the data into persistent image tiles, the presented method can minimize or eliminate image processing steps during the retrieval process. Tile-based approaches define constant image sizes and scales for geographic regions, therefore tiles can be pregenerated and stored in a format needed for transmission to users. This greatly improves the performance of applications that visualize DNC data and allows for advanced caching of DNC imagery tiles. In addition, the evenly-spaced and commonly-sized images are stored in files that are easily indexed allowing for simple and fast lookup of DNC imagery tiles for a given geographic area.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2010
Accession Number
ADA527671

Entities

People

  • Frank Mccreedy
  • John T. Sample
  • Norman Schoenhardt

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Command And Control
  • Computer Graphics
  • Data Sets
  • Data Storage Systems
  • Databases
  • Directories
  • Geographic Regions
  • Image Processing
  • Inland Waterways
  • Internet
  • Latitude
  • Marine Navigation
  • Military Research
  • Nautical
  • Navigation
  • Radar Reflectors
  • Web Browsers

Readers

  • Computer Vision.
  • Database Systems and Applications
  • Manufacturing Engineering.

Technology Areas

  • Space