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现在能用openmv进行垃圾识别了,在将垃圾放在地上或者是木板上的时候,发现了一个问题,就是在垃圾不在上面的时候,openmv也会将地或者木板识别为垃圾可能是有害垃圾也可能是其他垃圾,如果放一个矿泉水瓶则会识别为可回收垃圾,说明地和木板不影响垃圾的识别。但是怎么才能让openmv在没有垃圾的时候也不识别呢
多加一个背景的类别。