Generalizing digital elevation models for small scale hypsometric tinting

Leonowicz A, Jenny B.

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch

Abstract

This paper describes an automatic procedure for deriving worldwide small-scale hypsometric layers from digital elevation models. A custom generalisation procedure was developed to remove unnecessary details from the elevation model: (1) the elevation data are filtered with lower and upper quartile filters, (2) a drainage network is extracted from the elevation data, (3) the drainage network is simplified with a custom algorithm that removes the shortest streams, (4) a series of buffers are applied to the generalised drainage network, and (5) the buffered drainage network is used to combine the grids filtered with upper and lower quartile filters. After these five steps, the hypsometric layers are derived with a contouring algorithm. The proposed procedure follows the main guidelines for cartographic relief generalisation and the graphical quality of the resulting hypsometric layers is comparable to manually generalized layers.
Original languageEnglish
Title of host publicationProceedings of the 25th International Cartographic Conference
Subtitle of host publicationParis, France, 3–8 July 2011
EditorsAnne Ruas
PublisherInternational Cartographic Association
Number of pages7
ISBN (Electronic)9781907075056
Publication statusPublished - 2011
Externally publishedYes
Event25th International Cartographic Conference and 15th General Assembly of ICA - Paris, France
Duration: 3 Jul 20118 Jul 2011

Conference

Conference25th International Cartographic Conference and 15th General Assembly of ICA
CountryFrance
CityParis
Period3/07/118/07/11

Cite this

A, L., & B., J. (2011). Generalizing digital elevation models for small scale hypsometric tinting. In A. Ruas (Ed.), Proceedings of the 25th International Cartographic Conference: Paris, France, 3–8 July 2011 [CO-443] International Cartographic Association. http://icaci.org/files/documents/ICC_proceedings/ICC2011/Oral%20Presentations%20PDF/E2-Terrain%20generalisation/CO-443.pdf