A Qualitative Theory for Shape Representation
نویسندگان
چکیده
منابع مشابه
A Qualitative Theory for Shape Representation and Matching for Design
A new method for qualitative shape recognition and matching of objects in designs is presented in this paper. The approach consists of a reference-points information approach of the qualitative description of shapes considering qualitatively their angles, relative side length, concavities and convexities, and types of curvatures of the boundary. The shapes recognised are regular and non-regular...
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Boundaries are closely related to shape and it is in the context of shape representation that the problem of undetermined boundaries appears in spatial reasoning. Shape indeterminacy may occur at different levels of abstraction, namely at the topological and the geometrical level. It shows that there is quite a gap in expressiveness between the topological and the geometrical approaches to shap...
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Creating intelligent sketch-based educational software requires representing sketches the way a person would. Here, we evaluate several qualitative models of shape representation to determine which one best matches human judgments. The models differ in a) the way they segment an object’s contour into meaningful edges; and b) their level of detail for describing a shape. Our analysis indicates o...
متن کاملA General Theory of Boundary-based Qualitative Representation of Two-dimensional Shape
Shape is an important spatial attribute that features in much of our everyday reasoning and intelligent action. Consequently, representations of shape are important in the domain of Artificial Intelligence (AI). For the kind of commonsense reasoning that AI is interested in, it is necessary to represent shape in qualitative terms, using higher-level symbolic representations in preference to (or...
متن کاملQualitative Theory of Shape and Structure
In this ongoing work we present a method to associate to an object a set of spheres representing its shape (skeleton and thickness) and orientation. The notion of direction is deened with spheres and mereotopological relations. The study of the relative position of two directions leads to the notion of angle. We completely survey the case of shape representation of 2D convex objects, and propos...
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ژورنال
عنوان ژورنال: INTELIGENCIA ARTIFICIAL
سال: 2006
ISSN: 1988-3064,1137-3601
DOI: 10.4114/ia.v8i23.801