After analysing manifold color clustering methods, we present two unsupervised methods based on 2-d chroma plane, i. e, the density-based triangulation method and the GA-based optimization method.

在分析了多种颜色聚类方法的基础上，提出了2种无监督的二维色度平面颜色聚类方法：基于密度的三角化方法和遗传算法优化方法，并通过实验对2种方法进行了比对分析。

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In the optics measurement, laser triangulation measurement is one of common methods of noncontact measurement.

在光学测量中，激光三角测量法是一种常用的非接触测量方法。

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This paper first introduced the methods of curved surface measurement, especially introduced the character of Laser triangulation measurement.

本文通过对测量曲面面型的各种方法的比较，明确了激光三角法在曲面测量中具有优势。

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