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如果我要寻白线，是不是只需要改成黑色的阈值了吗？其它的都不用改吗
这个程序只是改了那个例子中所寻的颜色阈值吗，还是还改其它的呢
这是车上的巡线程序？，光有一个openmv和两个电机，还是配合arduino使用的？