Accession Number : ADA115143

Title :   Image Processing of Digital Cartographic Data.

Descriptive Note : Technical document,


Personal Author(s) : Johnston,Gerald Walter

PDF Url : ADA115143

Report Date : 05 Feb 1982

Pagination or Media Count : 39

Abstract : The Cartographer has long been interested in depicting surface features of the earth as a pictorial representation. This representation has normally consisted of pen and ink drawings in an easily referenced format. The ability to assure both quality and accuracy became two of the primary concerns of the Cartographer in the production of maps and charts. This paper details the rapid advancement of Cartography through the introduction of micro and minicomputers in the management and quality accuracy determinations of digital elevation and cultural information. Advantages and disadvantages of the new processing techniques are clearly stated. The algorithms and programming techniques are discussed with emphasis placed on resultant enhancements utilized by the cartographic analyst. The major theme for this paper is the methods used at DMA to review the digital data bases through the use of the Image Manipulation Station. System configuration, components, software development and image utilization are discussed. These comments are directed toward the various images (gray-coded, shaded relief) and the quality assurance verification techniques associated with the image enhancements. (Author)

Descriptors :   *Mapping, *Image processing, Aerial photographs, Optical images, Digital systems, Gray scale, Display systems, Rasters, Modification, Data processing

Subject Categories : Cartography and Aerial Photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE