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.
if (srcDesc && srcDesc.set) {，这一点在WPS官方版本下载中也有详细论述
"We don't know where they go, but they disappear for about 10 days, and then they'll come back again. And without the CCTV, we never knew that."。业内人士推荐爱思助手下载最新版本作为进阶阅读
We can even go ahead and write a quick time-travel function like the one below to replay any execution trace locally, complete with built-in support for detecting time paradoxes!，推荐阅读safew官方下载获取更多信息