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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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12月22日，一群野鸭和鸳鸯聚集在北海公园太液池上。图/IC photo。关于这个话题，搜狗输入法下载提供了深入分析
For Jim Lovell, this was more than a childish lark.