Abstract
“Collapse” is an essential operation for the manipulation of area features in digital data generalization. This operation can be categorized into two types: complete collapse and partial collapse. The former is composed of another two types: area-to-point and area-to-line collapse. In this paper, a set of algebraic models built upon the operators in mathematical morphology is described for the area-to-line collapse and partial collapse operations. For the area-to-line collapse operation, a modified skeleton algorithm is presented. For the partial collapse operation, a procedure is designed which consists of a set of operations, i.e., the skeletonization, separation of areal and linear parts, simplification of areas and an overlay operation. These models are tested using real map data sets.
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Su, B., Li, Z. & Lodwick, G. Morphological Models for the Collapse of Area Features in Digital Map Generalization. GeoInformatica 2, 359–382 (1998). https://doi.org/10.1023/A:1009757422454
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DOI: https://doi.org/10.1023/A:1009757422454