Feature characterization of rough surfaces is of growing interest in terms of a function oriented description of technical surfaces. Feature characterization requires a segmentation of significant hills and dales of the measured profile. The segmentation can be done in several ways. One method is the so called crossing-the-line segmentation which will be part of ISO 16610 part 45 and ISO 21920 part 2. The crossing-the-line segmentation described in this publication represents an extension of the algorithm proposed by Scott (Scott P, 2006, Meas. Sci. Technol. 17 , 559–564) and is based on new knowledge gathered over the last ten years. As an example, the feature parameters ##IMG## [http://ej.iop.org/images/2051-672X/8/2/024010/stmpab958cieqn1.gif] {$RSm$} and ##IMG## [http://ej.iop.org/images/2051-672X/8/2/024010/stmpab958cieqn2.gif] {$Rc$} according to ISO 4287:1997 are evaluated.

中文翻译：

---

跨线分割作为Rsm和Rc评估的基础

就技术表面的功能导向描述而言，粗糙表面的特征表征越来越受到关注。特征表征需要对测量轮廓的重要山丘和山谷进行分割。分割可以通过几种方式完成。一种方法是所谓的跨界分段，它将成为ISO 16610第45部分和ISO 21920第2部分的一部分。此出版物中描述的跨界分段代表了Scott（Scott P ，2006年，《科学测量技术》（Meas。Sci。Technol。），第17卷，第559-564页），并且基于过去十年中收集的新知识。例如，特征参数## IMG ## [http://ej.iop.org/images/2051-672X/8/2/024010/stmpab958cieqn1.gif] {$ RSm $}和## IMG ## [http://ej.iop.org/images/2051-672X/8/2/024010/stmpab958cieqn2。