偵測黑色門板上的黑色零部件
Since door panels are often dark colors such as black or gray, and the foam used to eliminate rattles and provide stiffness is generally black, it can be difficult for standard sensors to differentiate between foam presence and absence due to poor contrast.
 
                         
                         
                         
                         
                         
                         
                         
                         
                         
                         
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