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Real image compression (JPEG, PNG) uses different techniques (DCT, entropy coding), but quadtrees capture the same principle: spend your bits where the detail is, not uniformly across the whole image.
，更多细节参见51吃瓜
And in 2003, the Columbia shuttle broke up in the skies over Texas at the end of its mission, killing its crew of seven as well.
Москвичей предупредили о резком похолодании09:45