Region Connection Calculus 4¶
Description¶
Region Connection Calculus (RCC) [1] [2] is intended to serve for qualitative spatial representation and reasoning. RCC abstractly describes regions (in Euclidean space, or in a topological space) by their possible relations to each other.
RCC4 consists of 4 basic relations that are possible between two regions; it is a stripped down version of RCC8. The mapping from RCC8 to RCC4 can be seen below:
RCC8 | RCC4 |
---|---|
dc | dc |
ec | po |
po | |
tpp | pp |
ntpp | |
eq | |
tppi | ppi |
ntppi |
Relations¶
All the possible RCC4 relations between a blue object X and a red object Y are:
Relation | Illustration | Interpretation |
---|---|---|
X dc Y | X is disconnected from Y. | |
X po Y | X is partially overlapping Y. | |
X pp Y | X is a proper part of Y. | |
X ppi Y | X is a proper part inverse of Y. | |
References¶
[1] | Randell, D. A., Cui, Z. and Cohn, A. G.: A spatial logic based on regions and connection, Proc. 3rd Int. Conf. on Knowledge Representation and Reasoning, Morgan Kaufmann, San Mateo, pp. 165–176, 1992. (link) |
[2] | Anthony G. Cohn, Brandon Bennett, John Gooday, Micholas Mark Gotts: Qualitative Spatial Representation and Reasoning with the Region Connection Calculus. GeoInformatica, 1, 275–316, 1997. |