Method for determining an intuitively defined spatial relationship among physical entities
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United States of America Patent
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Nov 6, 1990
Grant Date -
N/A
app pub date -
Nov 14, 1988
filing date -
Nov 14, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Apparatus and method for determining whether a specific spatial relationship exists among physical spatial entities. First, spatially significant descriptors such as the interior and boundary of the physical spatial entities are selected and sets of elements forming a representation of each of the descriptors for each spatial entity is determined. Intersections are then determined between the sets of elements for every combination of descriptors and these intersections are categorized. The categorized relationships are then combined to determine a unique mathematical relationship between the spatial entities. The specific spatial relationship to be analyzed is broken down into the set of desired mathetmatical relationships. According to the present invention, it is then determined whether the unique mathematical relationship between the spatial entities matches any of the desired mathematical relationships used to define the specific relationship, to determine whether or not the spatial entities have the specific relationship.
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