B-spline Curve Fitting: Application to Cartographic Generalization of Maritime Lines

Abstract

Generalization is the process of abstraction applied when the scale of a map is changed. It involves modifications of data in such a way that the data can be represented in a smaller space, while best preserving geometric as well as descriptive characteristics. A map is an abstracted model representing the geometric reality. The smaller the scale, the more schematic the representation. Line cartographic generalization deals with graphic representation of lines. Many algorithms are available for an automated line cartographic generalization. Instructions for using these algorithms are often complex and representations applied ill-adapted to some generalization processes. In this paper, we explain the advantages of using B-spline curves in a line generalization process. We focus on processing of line cartographic generalization operators in a maritime context. Keywords: Line cartographic generalization, B-spline curve. 1

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