Accession Number : ADA244188

Title :   Using Logic in a Model-Based Approach to Object Recognition.

Descriptive Note : Final rept.,

Corporate Author : ARMY LAB COMMAND WATERTOWN MA MATERIAL TECHNOLOGY LAB

Personal Author(s) : Dunn, Suzanne G. ; Gennert, Michael A.

Report Date : DEC 1991

Pagination or Media Count : 20

Abstract : A model-based object recognition system, predicted on logic as a method of modeling, describing and identifying objects, is proposed. Users supply the object recognition system with models of known object classes in the form of production rules. The system describes each instance of an object found within an image scene as a collection of facts. The modeled rules act upon these facts in a Prolog environment to obtain an interpretation of the original image scene. Since users supply the object models and the Prolog environment supplies the interference mechanism for interpretation, the primary task of the object recognition system is the description process. For each object instance identified within the image scene, declarative statements are formulated which represent observer components, features or attributes of that object. The description of an object instance is restricted to its geometric components which are derived from a skeleton or stick-figure representation of a 2-D silhouette portrayal of an object found in the original image scene. Therefore, object classifications can be modeled in a general way so that the size and orientation of the object is independent of that model.

Descriptors :   CLASSIFICATION, GEOMETRY, IMAGES, INTERFERENCE, MODELS, OBSERVERS, ORIENTATION(DIRECTION), PRODUCTION, RECOGNITION, SKELETON, SUPPLIES.

Subject Categories : Cybernetics
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE