Quadtree-based image compression formats and level-of-detail systems all work this way. Satellite imagery, terrain rendering, and geographic information systems use quadtree decomposition to serve data at varying resolutions: zoomed out, you see large coarse blocks; zoomed in, you see fine-grained tiles. The same principle extends to three dimensions (octrees) for volume rendering and 3D spatial indexing.
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"Before retiring in 2016, I always practised with the patient at the centre of my care, while abiding by the first principle of medicine: 'first, do no harm'."
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昨晚，苹果 CEO Tim Cook 在社交媒体官宣：