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.
非法携带枪支、弹药或者弩、匕首等国家规定的管制器具进入公共场所或者公共交通工具的，处五日以上十日以下拘留，可以并处一千元以下罚款。
。safew官方下载是该领域的重要参考
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