Accession Number:

ADA151267

Title:

Off-Line Orthophotograph Production Using Non-Matrix Elevation Data.

Descriptive Note:

Final rept.,

Corporate Author:

DEFENSE MAPPING AGENCY HYDROGRAPHIC/ TOPOGRAPHIC CENTER WASHINGTON DC

Personal Author(s):

• Villadsen,G. T.
• Johnson,S. D.

Report Date:

1984-11-01

Pagination or Media Count:

21.0

Abstract:

At the Defense Mapping Agencys HydrogaphicTopographic Center, DMAHTC, the only manual stereoplotter currently in use is the Analytical Stereoplotter II AS-11. Because of its elevation sampling algorithms, digital elevation data sets produced on the AS-11 are not digital elevation matrices DEMs. However, all of DMAHTCs orthophotographs from elevation data collected on the AS-11, FORTRAN software was developed for transforming AS-11 elevation data into orthophotoprinter-compatible DEMs. This paper describes the techniques employed for resampling and for filling large empty areas within the DEM such as those caused by cloud cover and large water bodies. Originator-supplied key words include PASS-OLOPS Off-Line Orthophoto Printing System Program, PASS-RPIE Replacement of Photographic Equipment Program, AS-11-AM.

Descriptors:

• *ORTHOPHOTOGRAPHY
• DATA BASES
• DATA PROCESSING
• DIGITAL SYSTEMS
• PRODUCTION
• MAPPING
• AERIAL PHOTOGRAPHS
• ELEVATION
• PRINTING
• STEREOSCOPIC MAP PLOTTERS

Subject Categories:

• Cartography and Aerial Photography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE