Accession Number : AD0726386

Title :   Automatic Contour Digitizer (ACD).

Descriptive Note : Final rept. Aug 68-Jul 69,

Corporate Author : ARMY ENGINEER TOPOGRAPHIC LABS FORT BELVOIR VA

Personal Author(s) : Garlow,John H.

Report Date : APR 1971

Pagination or Media Count : 100

Abstract : The report covers the engineer design tests conducted to determine the suitability of the Automatic Contour Digitizer (ACD) system for digitizing map controur line data. The ACD was designed to automate the conversion of graphic contour elevation information to digital form and to store the data on half-inch-wide magnetic computer tape at 556 bits per inch in either contour (string) or profile format. Inputs to the system are existing color separations on 0.007- inch-thick Cronapaque or film base. Up to 24-by 30-inch sheet sizes can be processed. (Author)

Descriptors :   (*MAPS, DIGITAL RECORDING SYSTEMS), MAGNETIC TAPE, PERFORMANCE(ENGINEERING), RELIABILITY, TEST METHODS, ELECTRONIC EQUIPMENT

Subject Categories : Cartography and Aerial Photography
      Computer Hardware
      Recording and Playback Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE