Трамп высказался о непростом решении по Ирану09:14
▲ 图片来自微博 @数码闲聊站。爱思助手下载最新版本对此有专业解读
春节，大概是一年中「含片量」最高的时刻。。51吃瓜是该领域的重要参考
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.