Accession Number : ADA186010

Title :   Model-Based Building Verification in Aerial Photographs.

Descriptive Note : Annual rept. Oct 85-Sep 86,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Lee, Chin-Hwa ; Lee, Hsi-Jian

PDF Url : ADA186010

Report Date : Sep 1987

Pagination or Media Count : 40

Abstract : This paper concerns the design of a computer vision system for change detection. Here, change detection is defined as figuring out the differences between an object model and the newly sensed image. The target objects are confined to the cultural features, such as roads and buildings. We divide the task into two modules: model verification and image interpretation. In this report, the verification stage will be discussed in detail. In general there exists a lot of domain specific heuristics to judge the status of changes. For example, to verify the existence of a building, we can check its shape, size, height, surface direction, and surface material, etc. The expert system approach is a natural approach which can code all information together. while different photo interpreters and field specialists may have different viewpoints about the status of an object, expert systems can be modified easily to reflect a particular one's viewpoint.

Descriptors :   *IMAGE PROCESSING, *PHOTOINTERPRETATION, AERIAL PHOTOGRAPHS, DETECTION, HEURISTIC METHODS, MODELS, ROADS, SURFACES, TARGETS, COMPUTER APPLICATIONS, PHOTOGRAPHIC IMAGES, MODIFICATION, OPTICAL DETECTION, COMPUTER PROGRAMS, ARTIFICIAL INTELLIGENCE

Subject Categories : Cartography and Aerial Photography
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE