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the source material
，更多细节参见同城约会
* 时间复杂度: O(nlogn) 空间复杂度: O(1) 稳定: ✗，详情可参考91视频
（十三）剪接、删改、损毁、丢失办理治安案件的同步录音录像资料的；
Another way to approach dithering is to analyse the input image in order to make informed decisions about how best to perturb pixel values prior to quantisation. Error-diffusion dithering does this by sequentially taking the quantisation error for the current pixel (the difference between the input value and the quantised value) and distributing it to surrounding pixels in variable proportions according to a diffusion kernel . The result is that input pixel values are perturbed just enough to compensate for the error introduced by previous pixels.