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如何利用边缘检测获得想要的点坐标?
边缘检测没有办法提取坐标
@yuan 那这种情况,我该通过什么提取坐标呢
可以识别矩形得到矩形的顶点坐标
@yuan 第一张图是可以通过识别矩形得到四角坐标的,我也实现了。可是第二张图这种情况识别不出来矩形,请问还有其他方法吗?
第二张图利用线段识别,识别两条较长的横线