let maxVal = -Infinity;
Photograph: Julian Chokkattu
。关于这个话题，Line官方版本下载提供了深入分析
Standard Digital
Олег Давыдов (Редактор отдела «Интернет и СМИ»)
An example of dithering using random noise. Top to bottom: original gradient, quantised after dithering, quantised without dithering.