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authors Alik, B.
year 1999
title A topology construction from line drawings using a uniform plane subdivision technique
source Computer-Aided Design, Vol. 31 (5) (1999) pp. 335-348
summary The paper describes an algorithm for constructing the topology from a set of line segments or polylines. The problem appears for example at land-maps that have been drawnby general-purpose drawing packages or captured from blue-prints by digitalisation. The solution comprises two steps; in the first step inconsistencies in the input data aredetected and removed, and in the second step the topology is constructed. The algorithm for topology construction consists of two phases: determination of a concave hull,and generation of polygons. It is shown that the running-time of the presented algorithm is better than O(n2), where n is the number of input points. Because of a largenumber of geometric elements being expected, the geometric search needed at the first step of the algorithm is speeded up by an acceleration techniquea uniform planesubdivision.
keywords Computational Geometry, Topology Construction, Uniform Space Subdivision
series journal paper
references Content-type: text/plain
last changed 2003/05/15 19:33
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