self.timeout = 10
let list of candidates = N closest colours to pixel
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蒸馏能帮你更快入场，但真要打到顶级水平，从来没有捷径。。业内人士推荐safew官方下载作为进阶阅读
You look at a region of the image. If all the pixels are roughly the same color (below some threshold), you store the average color for the whole region as a single value. If the pixels vary too much, you split the region into four quadrants and try again.
В Финляндии предупредили об опасном шаге ЕС против России09:28