NUMERICAL GROUND IMAGE SYSTEM

This report (1) explains the scan profile method for representing the terrain surface using a numerical surface and (2) provides user instructions for retrieval of cross-sections computed from this suface model along any specified alignment using the Roadway Design System (RDS). The appendix contains an example problem, a detailed explanation of the algorithms used, and the program documentation for the numerical Ground Image (NGI) system.

  • Supplemental Notes:
    • Prepared in cooperation with FHWA.
  • Corporate Authors:

    Texas State Department of Highways & Public Transp

    P.O. Box 5051
    Austin, TX  United States  78763
  • Authors:
    • CRAWFORD, W L
    • Guess, R R
  • Publication Date: 1974-10

Media Info

  • Features: Appendices; Figures;
  • Pagination: 148 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00097489
  • Record Type: Publication
  • Report/Paper Numbers: THD-1-19-71-186-2F Final Rpt.
  • Contract Numbers: 1019-71-186
  • Files: TRIS, STATEDOT
  • Created Date: Aug 13 1975 12:00AM