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1引言金属制造业中基本过程包括了钢板的冷轧。由于进料装载和轧辊的磨损，产品的表面粗糙度将是与时间相关的。冷轧过程是一种能够提供在线光学检测表面状态可能性的例子。本文提出了一个检测冷轧钢表面粗糙度的光学系统。其目的在于开发出尽可能简单的系统。这种简单系统的优
1 Introduction The basic process in the metal manufacturing industry includes the cold rolling of steel sheets. Due to feed loading and roll wear, the surface roughness of the product will be time dependent. The cold rolling process is an example of the possibility of providing on-line optical inspection of the surface conditions. This paper presents an optical system to detect the surface roughness of cold-rolled steel. Its purpose is to develop a system that is as simple as possible. The advantages of this simple system