主要结论：(1)调频加网不是越高，其印刷效果就越好，而是达到一定的加网线数后其印刷质量反而开始下降。

The main conclusions: (1) FM network is not higher the better the printed results, but up to a certain post-screening lines instead of its print quality began to decline.

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对于该方法，将具有不同加网角度和加网线数的第二网屏的阈值矩阵读出并且与所提供的半色调图像的色值比较。

For the method, the threshold value matrix of a second screen with a different screen Angle and width is read out and compared with the color values of a halftone image presented.

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