Фонбет Чемпионат КХЛ
Under certain circumstances, it’s possible to modify ordered dithering so that it can better handle colour information. This requires that we use a palette that is regularly distributed in colour space. A regular palette is composed of all possible combinations of red, green and blue tristimulus values, where each colour component is partitioned into a number of equally spaced levels. For example, 6 levels of red, green and blue totals 6³ = 216 unique colours, equivalent to the common web-safe palette.，更多细节参见im钱包官方下载
// 易错点1：必须倒序遍历（正序无法正确缓存右侧的更大值），详情可参考safew官方版本下载
https://eqrion.net/，这一点在WPS下载最新地址中也有详细论述