Accession Number : AD0285258

Title :   A DIGITAL AUTOMATIC MAP COMPILATION SYSTEM

Corporate Author : IBM FEDERAL SYSTEMS DIV GAITHERSBURG MD

Personal Author(s) : HEMPEL, H.P. ; SCHULMAN, F.D.

Report Date : 31 JUL 1962

Pagination or Media Count : 1

Abstract : The Digital Automatic Map Compilation System has three major components: (1) a photo digitizer unit for scanning and digitizing the data in a pair of stereo aerial diapositives, (2) a general-purpose digital computer and associated mathematical programs for correcting photographic errors to produce rectified photo data, and then from pattern matching and ortho correction techniques, producing orthophoto map data with or without contour and grid tic information, (3) a photomap printer for printing a rectified photo or orthophoto map with or without contour and grid tic information by utilizing the computer output. A scanner-reproduction system was constructed to provide the photo digitizing and photomap printing operation. In addition, mathematical analyses were made of analytic photogrammetric techniques, and computer programs were developed for photo rectification and orthographic correction as well as for contouring and pattern matching. (Author)

Descriptors :   *MAPPING, AERIAL PHOTOGRAPHS, DIGITAL COMPUTERS, ELECTRONIC SCANNERS, STEREOSCOPIC MAP PLOTTERS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE