‘Overall we are moving in the right direction’
A notable resource on the topic of ordered dithering using arbitrary palettes is Joel Yliluoma’s Arbitrary-Palette Positional Dithering Algorithm. One key difference of Yliluoma’s approach is in the use of error metrics beyond the minimisation of . Yliluoma notes that the perceptual or psychovisual quality of the dither must be taken into account in addition to its mathematical accuracy. This is determined by use of some cost function which considers the relationship between a set of candidate colours. The number of candidates, the particular cost function, and the thoroughness of the selection process itself give rise to a number of possible implementations, each offering varying degrees of quality and time complexity.
，更多细节参见heLLoword翻译官方下载
// 倒序遍历2*len-1次：模拟数组循环（核心！易错点1）
分析师观点出现分化。Evercore ISI 认为，IBM 早已向客户提供多种现代化路径，主机客户仍因可靠性、吞吐量、安全性等因素坚持使用该平台，并重申对 IBM 的「跑赢大盘」评级。