ISO/TS 18621-21:2020 印刷技术 印刷品图像质量评价方法 第21部分：用扫描分光光度计测量宏观均匀性的一维畸变

标准编号：ISO/TS 18621-21:2020

中文名称：印刷技术 印刷品图像质量评价方法 第21部分：用扫描分光光度计测量宏观均匀性的一维畸变

英文名称：Graphic technology — Image quality evaluation methods for printed matter — Part 21: Measurement of 1D distortions of macroscopic uniformity utilizing scanning spectrophotometers

发布日期：2020-11

标准范围

本文件定义了一种测量方法，用于评估水平和垂直方向印刷区域（如条纹和条纹）宏观均匀性中的畸变。它提供了测试表格的布局要求、在2D采样网格中进行测量的颜色测量设备的使用要求，以及计算宏观均匀性分数的公式。本文件不包括任何非相邻或非水平或垂直图案。由于使用了空间频率，宏-均匀性分数不能测量高频（精细）模式，例如缺少喷嘴。

This document defines a measurement method for the evaluation of distortions in the macroscopic uniformity of printed areas that are oriented in the horizontal and vertical direction, such as streaks and bands.It provides requirements for the layout of the test form, the use of a colour measurement device taking measurements in a 2D sampling grid, and the formula to compute the Macro-Uniformity-Score.This document does not cover any non-adjacent or non-horizontal nor vertical patterns. Due to the used spatial frequency, the Macro-Uniformity-Score does not measure high frequency (fine) patterns such as missing nozzles.

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