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Ramer–Douglas–Peucker algorithm
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Ramer–Douglas–Peucker algorithm : ウィキペディア英語版
Ramer–Douglas–Peucker algorithm
The Ramer–Douglas–Peucker algorithm (RDP) is an algorithm for reducing the number of points in a curve that is approximated by a series of points. The initial form of the algorithm was independently suggested in 1972 by Urs Ramer and 1973 by David Douglas and Thomas Peucker〔See the References for more details〕 and several others in the following decade. This algorithm is also known under the names Douglas–Peucker algorithm, iterative end-point fit algorithm and split-and-merge algorithm.
== Idea ==
The purpose of the algorithm is, given a curve composed of line segments, to find a similar curve with fewer points. The algorithm defines 'dissimilar' based on the maximum distance between the original curve and the simplified curve (i.e., the Hausdorff distance between the curves). The simplified curve consists of a subset of the points that defined the original curve.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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