Accession Number : ADA327837

Title :   Virtual World Reconstruction Using the Modeling and Simulation Extended Vector Product Prototype.

Descriptive Note : Final rept.,

Corporate Author : NAVAL RESEARCH LAB STENNIS SPACE CENTER MS MAPPING SCIENCES SECTION

Personal Author(s) : Shaw, Kevin ; Abdelguerfi, Mahdi ; Cooper, Edgar ; Wynne, Christ ; Ray, Barbara

PDF Url : ADA327837

Report Date : 30 MAY 1997

Pagination or Media Count : 24

Abstract : The modeling and simulation (M&S) communities for both the Navy and Marine Corps are not currently satisfied by the data provided by the Defense Mapping Agency. In particular, deficiencies exist in both the lack of a continuous surface representation and an inconsistent view of elevation throughout a single database. The M&S Extended Vector Product (MSEVP) prototype being developed is an extended vector product format-based product containing a continuous surface representation and a consistent view of elevation across the thematic coverages contained within a database. A continuous surface representation is provided in the MSEVP prototype as a Triangulated Irregular Network (TIN) and stored in the MSEVP elevation coverage. This report also examines bow a TIN representation of the transportation network is constructed from a two-dimensional linear representation. Each linear road is widened to provide a more realistic representation of its real work counterpart and then overlaid over the elevation TIN to ensure that the road adheres to the surface characterized by the elevation coverage. This overlay process ensures that a consistent view of elevation will exist across coverages.

Descriptors :   *COMPUTERIZED SIMULATION, *DIGITAL MAPS, DATA BASES, DATA MANAGEMENT, MAPPING, ELEVATION, VIRTUAL REALITY, TERRAIN MODELS.

Subject Categories : Cartography and Aerial Photography
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE