Accession Number : ADA192314

Title :   Automatic Line Network Extraction from Aerial Imagery of Urban Areas through Knowledge Based Image Analysis.

Descriptive Note : Interim rept. no. 1,

Corporate Author : FORSCHUNGSINSTITUT FUER INFORMATIONS- VERARBEITUNG UND MUSTERERKENNUNG ETTLING EN (GERMANY F R)

Personal Author(s) : Kazmierczak, H

PDF Url : ADA192314

Report Date : 20 Jan 1987

Pagination or Media Count : 3

Abstract : The whole process will consist of the following major processing steps: application of procedures for starting point search of the road network; application of procedures for road extraction from the image by setting out from the starting points; application of procedures for subimage segmentation on the basis of general contrast evaluation; compilation of all resulting objects, object sections, and image segments into a data base for image segments; application of procedures for structure analysis of image segments; compilation of a model of a typical suburban area: objects, features, relations and hierarchies between objects to be stored in a semantic net; comparison of object structures found in the image with model structures to achieve labeling; data dependent iterative improvement and refinement of object structure labeling via prediction and verification, and selection of road structures for display and assessment.

Descriptors :   *AERIAL PHOTOGRAPHY, *IMAGE PROCESSING, *PHOTOGRAMMETRY, DATA BASES, HIERARCHIES, DATA BASES, EXTRACTION, ROADS, SELECTION, STRUCTURES, SEARCHING, NETWORKS, COMPARISON, MODELS, SEGMENTED, SEMANTICS, IMAGES, URBAN AREAS

Subject Categories : Cartography and Aerial Photography
      Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE