Анна Комиссарова
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.
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* 时间复杂度: O(nlogn) 空间复杂度: O(1) 稳定: ✗，更多细节参见搜狗输入法2026