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寻找色块时它的那个cx,cy坐标是相对于谁而言的，摄像头吗？
http://book.openmv.cc/image/basic-operation.html
相对于openmv视野的左上角，你可以通过移动色块看坐标变化趋势来验证一下这个坐标系的零点在哪个方向
我发的链接里，教程很清楚的原点。