Dithering in its simplest form can be understood by observing what happens when we quantise an image with and without modifying the source by random perturbation. In the examples below, a gradient of 256 grey levels is quantised to just black and white. Note how the dithered gradient is able to simulate a smooth transition from start to end.
Reports with charts and graphs
，这一点在搜狗输入法下载中也有详细论述
第一百零三条 公安机关对与违反治安管理行为有关的场所或者违反治安管理行为人的人身、物品可以进行检查。检查时，人民警察不得少于二人，并应当出示人民警察证。
（作者为中国社会科学院学部委员、台湾史研究中心主任）