Line generalisation by repeated elimination of points

Visvalingam, M. and Whyatt, J. D. (1993) Line generalisation by repeated elimination of points. Cartographic Journal, 30 (1). pp. 46-51. ISSN 0008-7041

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Abstract

This paper presents a new approach to line generalisation which uses the concept of ‘effective area’ for progressive simplification of a line by point elimination. Two coastlines are used to compare the performance of this, with that of the widely used Douglas-Peucker, algorithm. The results from the area-based algorithm compare favourably with manual generalisation of the same lines. It is capable of achieving both imperceptible minimal simplifications and caricatural generalisations. By careful selection of cutoff values, it is possible to use the same algorithm for scale-dependent and scale-independent generalisations. More importantly, it offers scope for modelling cartographic lines as consisting of features within features so that their geometric manipulation may be modified by application- and/or user-defined rules and weights. The paper examines the merits and limitations of the algorithm and the opportunities it offers for further research and progress in the field of line generalisation.

Item Type: Journal Article
Journal or Publication Title: Cartographic Journal
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/1900/1904
Subjects:
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 135032
Deposited By: ep_importer_pure
Deposited On: 01 Jul 2019 11:30
Refereed?: Yes
Published?: Published
Last Modified: 15 Aug 2019 02:31
URI: https://eprints.lancs.ac.uk/id/eprint/135032

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