In order to mimic analog halftoning techniques, clustered-dot ordered dithering or Amplitude Modulated (AM) halftoning produces this illusion by varying the size of printed dots according to the gray level of an original continuous image.

• 传统的调幅加网(又称聚集点有序抖动加网)通过改变网点的大小来表现灰度级,对于低分辨率的打印机而言,其设备输出分辨率与再现图像层次的矛盾尤为突出。