To date, it is not fully used, because it is very difficult to detect clear and steady image owing to the noise interferences that exist in the nearby weld line caused by vast arc, spatter, etc.

• 但是目前还未能有效加以利用,这是因为熔池区存在大量的弧光、飞溅等噪声的干扰,不易获得清晰稳定的近熔池区图像。