Accession Number : ADA114815

Title :   Interactive Digital Image Processing for Terrain Data Extraction.

Descriptive Note : Final rept. Sep 80-Sep 81 on Phase 2,


Personal Author(s) : Wescott,Thomas F ; Dallam,William C ; Peterson,Christopher J

PDF Url : ADA114815

Report Date : Sep 1981

Pagination or Media Count : 133

Abstract : The phase 2 of an experimental study has been performed to investigate the feasibility and use of man-machine interactive digital image processing techniques when applied to the extraction of terrain analysis data from aerial imagery. This phase of the study concentrated on applying techniques to extract water resources data elements and on the development and coding of software and algorithms. The developed software and algorithms, pertained to filtering of themes, and image scaling. Two digital processing techniques to 'skeletonize' features, best mapped as lines, were established and tested with limited success. Relative to water resources data elements, success was achieved in the extraction of alignment of watercourses and shore line alignment of watercourses of water bodies. Partial success was achieved with the elements of delineation of wet areas and the identification of terminal points of watercourse segments. Image processing techniques for the extraction of areas subject to flooding and for the measurement of bank heights were not practical with the existing software. The development/implementation of software, and the processing and analysis of imagery was conducted at the General Electric Digital Image Analysis Laboratory. (Author)

Descriptors :   *Digital maps, *Image processing, Interactive graphics, Terrain, Man machine systems, Man computer interface, Coding, Feasibility studies, Algorithms, Extraction, Water resources, Computer programs, Interactions, Radar images, Side looking radar, Data management, Data reduction, Data acquisition

Subject Categories : Cartography and Aerial Photography
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE