简单阐述了调幅加网的原理与特点，研究了基于最小阈值矩阵的调幅加网技术在光栅防伪技术中的应用，实验验证了在半色调图像的CMY 3个色版同时加入防伪信息的可行性。研究表明，基于最小阈值矩阵的调幅加网技术可以在光栅防伪技术中得到很好的应用。

The principle and characteristics of AM screening were introduced. The application of AM screening based on the minimum threshold matrix in grating anti-counterfeit technology was studied. The feasibility of adding anti-counterfeit information in CMY of halftone image at the same time was proved through experiments. The results showed that AM screening technology based on the minimum threshold matrix can be applied well in grating anti-counterfeit technology.