Highly Divergent Profiles: For routing configurations that are not pre-calculated as common scenarios and whose costs vary too much from default configurations, the original A* algorithm might still be faster (and is often used as an automatic fallback).
Питтсбург Пингвинз
。关于这个话题，WPS下载最新地址提供了深入分析
第七十五条 当事人应当履行裁决。一方当事人不履行的，另一方当事人可以依照《中华人民共和国民事诉讼法》的有关规定向人民法院申请执行。受申请的人民法院应当执行。
You look at a region of the image. If all the pixels are roughly the same color (below some threshold), you store the average color for the whole region as a single value. If the pixels vary too much, you split the region into four quadrants and try again.