Accession Number : ADA116731

Title :   Classification of Cartographic Features through Walsh Transforms.

Descriptive Note : Research note Sep 79-Dec 80,

Corporate Author : ARMY ENGINEER TOPOGRAPHIC LABS FORT BELVOIR VA

Personal Author(s) : Chen,Pi-Fuay ; Rohde,Frederick W ; Seemuller,William W

PDF Url : ADA116731

Report Date : Apr 1982

Pagination or Media Count : 43

Abstract : An Algorithm was used to classify and recognize a set of selected cartographic features, such as road intersections, straight-line roads, and rectangular objects, which were decomposed in the Walsh transform domain. The method was implemented digitally with an experimental system consisting of a solid state sensor array, a minicomputer as signal processor, and a computer-controlled translational stage as the image holder. Recognition examples for the set of cartographic features with respect to the window of inspection are presented. Nearly 90 percent recognition accuracy was obtained for the selected set of the cartographic features. (Author)

Descriptors :   *Mapping, *Topographic maps, Walsh transformation, Minicomputers, Algorithms, Patterns, Classification, Roads

Subject Categories : Cartography and Aerial Photography
      Theoretical Mathematics

Distribution Statement : APPROVED FOR PUBLIC RELEASE