Quadtrees aren't limited to point data. They can also partition regions of continuous data, like the pixels of an image.
三个别人帮忙拍的视频里，都能找到阿爸的身影，他始终站着，鲜少与人交谈。阿爸要么站在大人那桌旁，低头用那双像“鸡爪”的手滑着手机；要么双手背在身后，与人寒暄一两句，要么在小孩桌边站着，双手像多余似的挂在身前。阿妈说：“何止他手多余，整个人看起来都有点多余。”
。关于这个话题，Line官方版本下载提供了深入分析
The grid lines on the visualization represent a tree structure underneath. Every region is a node. When a node splits, it creates four children. The root node covers the entire space. Leaf nodes (nodes with no children) hold the actual points.
目前该功能仅面向顶配的「Max」级订阅用户（定价 200 美元/月）开放。