The 32nd International Young Physicists’ Tournament (IYPT), a physics competition for students in schools, settled up a problem for the Moir thread counter. The problem mentioned to design an overlay to measure the thread count of the fabric. In this paper, we made one kind of Moir pattern-based thread counter by printing the designed overlay on the plastic paper. As a contrast, we also constructed a self-made CCD camera assisted imaging system and studied the thread count. We used a 1951 USAF resolution test chart and MATLAB software for imaging analysis. Ten kinds of simple cloth were prepared, and their thread count measured. The results and the accuracy of the two methods were discussed.

第 32 届国际青年物理学家锦标赛 (IYPT) 是一项面向学校学生的物理竞赛，解决了莫尔螺纹计数器的问题。提到的问题是设计一个覆盖层来测量织物的线数。在本文中，我们通过在塑料纸上打印设计的覆盖层制作了一种基于莫尔图案的线程计数器。作为对比，我们还构建了自制的CCD相机辅助成像系统并研究了线程数。我们使用 1951 USAF 分辨率测试图和 MATLAB 软件进行成像分析。准备十种简单的布，并测量它们的线数。讨论了两种方法的结果和准确性。