Accession Number:

ADA067166

Title:

The Use of Models in Image Analysis.

Descriptive Note:

Technical rept. 1 Nov 76-31 Aug 78,

Corporate Author:

L N K CORP SILVER SPRING MD

Personal Author(s):

• Stockman,George C.
• Kopstein,Steven H.

Report Date:

1979-01-01

Pagination or Media Count:

149.0

Abstract:

Several of the automatic components of an interactive imagery screening and target detection system are studied. Components include a module for detection of primitive image features without model hypothesis, a module for generation of hypotheses given that a particular model for the data has been evoked by primitive feature content, and a module for testing the model generated hypotheses against the data. Only shape features extracted from boundary segments are considered in this work. Features used are straight, circular, and parabolic edge segments and points of intersection or points of high curvature on edge segments. Feature extraction algorithms are discussed. Two different model types are considered--problem reduction representations PRR which correspond to grammar models and iconic models which correspond to cartographic data bases. Once primitive features from an image are aligned with a potential model the model generates hypotheses about the data which can be either verified or denied. Testing of hypotheses is done via curve fitting or template matching. A new approach to registration is presented and documented via experimental results. The registration approach enables the use of cartographic data bases as models for use in image analysis and object detection. Author

Descriptors:

• *IMAGE PROCESSING
• *TARGET RECOGNITION
• AUTOMATION
• EDGES
• PROBLEM SOLVING
• PHOTOGRAPHIC ANALYSIS
• COMPUTER APPLICATIONS
• PATTERN RECOGNITION
• INTERACTIVE GRAPHICS
• TARGET DETECTION
• AERIAL PHOTOGRAPHS
• CONTEXT FREE GRAMMARS

Subject Categories:

• Cybernetics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE