With the "halftone layer" selected, select Filter Sketch halftone Pattern from the menu bar.
选中“中间调图层”，从菜单栏选择滤镜素描半色调图案。
An overview of already proposed watermarking algorithms for halftone images is given, based on the introduction of three kinds of halftone methods, ordered dithering, error diffusion and pattern.
介绍了有序抖动、误差扩散和模板法三种图像半色调方法，在此基础上，综述了现有的半色调图像水印算法，并对其中的四种方法进行了比较。
A new pattern and halftone algorithm for six-color printer is presented. Research has proved that the algorithm is simple and practical.
简单介绍了六色打印的优点，提出了一种适用六色打印的模板和误差分散数字半调算法，实验表明，该算法简单实用。
A new pattern and halftone algorithm for six-color printer is presented. Research has proved that the algorithm is simple and practical.
简单介绍了六色打印的优点，提出了一种适用六色打印的模板和误差分散数字半调算法，实验表明，该算法简单实用。
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