Abstract:In order to realize the automatic identification of the adhesion image boundary of each round steel end face in bales,the method for eliminating adhesion images’ oversegmentation of oval spots was proposed,and the principle,steps and verification experiment for the method were studied.After analyzing the causes of adhesion images’ oversegmentation,two types of oversegmented images were given,which are serious oversegmented images and a small amount of oversegmented images.Firstly,a equilateralhexagonal6crossed rotation operator was proposed to identify the black scar image on round steel end face oval spot blackwhite image before image segmentation,and the black scar area was filled to avoid serious segmentation.Then,the restoration of the small amount oversegmented image was realized by “stitch bond” the oval spots image area boundary.Finally,the image boundary separation of each round steel in round bales image was realized.The center coordinates extraction experiment of the each round steel end face in round bales was carried out by the above methods.The experimental results indicate that the extraction error range of center level and vertical coordinate of round steel end faces is -0.322 2~0.444 5 mm and -0.294 0~0.399 0 mm respectively,which meets the enterprises allowed center coordinates positioning error value 1 mm of the round steel end face fully in bales automatic marking.