Jan A. Mulder

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Schema-based representations for visual knowledge are integrated with constraint satisfaction techniques. This integration is discussed in a progression of three sketch map interpretation programs: Mapsee-1, Mapsee-2, and Mapsee-3. The programs are evaluated by the criteria of descriptive and procedural adequacy. The evaluation indicates that a schema-based(More)
The use of specialization hierarchies in model-based vision systems may cause problems with uniformity in representation and efficiency. The concept of a discrimination graph is introduced. Such a graph facilitates the representation of hypothetical and ambiguous interpretations in a uniform and efficient way. We describe the implementation of Mapsee-3, a(More)
Model-based vision systems must be capable of dealing with large quantities of hypothetical interpretations. Hypothesise-and-test methods often lead to combinatorial explosions of possible interpretations. Discrimination graphs prevent such explosions by imposing a hierarchical organisation on the domain of interpretation. Such an organisation effectively(More)
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