Extracting Contour Lines from Scanned Topographic Maps

Authors:
Loh Mun San;Safie Mat Yatim;Noor Azam Md Sheriff;Nik Isrozaidi bin Nik Ismail
Affiliations:
Universiti Teknologi Malaysia;Universiti Teknologi Malaysia;Universiti Teknologi Malaysia;Universiti Teknologi Malaysia
Venue:
CGIV '04 Proceedings of the International Conference on Computer Graphics, Imaging and Visualization
Year:
2004

Citing 0
Cited 2

Colors of the past: color image segmentation in historical topographic maps based on homogeneity

Geoinformatica
A new approach to the reconstruction of contour lines extracted from topographic maps

Journal of Visual Communication and Image Representation

Quantified Score

Hi-index	0.01

Visualization

Abstract

Contour lines are the main graphical element to characterize three-dimensional terrain on two-dimensional map sheets. The conversion of raster contour data to the corresponding vectors is still an interesting problem in the stage of research. In this paper, we suggest a contour extraction or simplification method, subsequently perform a fully automated, derivation of topographic map sheets containing simplified contour lines and inscriptions. The generated contour map is used to produce DEMs. The results concern the computation cost and the accuracy of the underlying contour lines information extracted.