使用php查找图像地图的中心点

如何从一组xy坐标中找到中心点？我在数据库中存储了许多图像地图。我想找到每个的中心点，这样我就可以移动图像，使其与选定的地图相对应。下面是一个坐标的例子。这可能吗

谢谢

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我认为这是一个类似的问题：

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或者你也可以在维基百科上试试这篇文章，自己动手做：

这基本上就是找到多边形的中心。我会把搜索重点放在那个地区。例如：（看起来并不琐碎）谷歌搜索

php中心多边形也会发现一些有趣的东西results@Pekka-非常简单