| 摘要 |
The invention relates, in particular, to a method for detecting defects of a material moving in a rolling mill generally consisting in illuminating (ECL) said product, in obtaining (ACQ) the image thereof (I<SUB>3</SUB>) in at least one spectral band, in pre-processing (PTTRM) the formed image, in detecting and extracting (DTEXTR) eventually suspected areas (Z<SUB>V</SUB>) of the pre-processed image (DL<SUB>V</SUB>), and in classifying (CLASS) the suspected areas into one or several defect or defect-free categories. According to said invention used for hot-rolled materials, the product is inspected in three disjointed spectral bands, including infrared, red and, for instance, green band in such a way that the suspected areas (Z<SUB>IR</SUB>, Z<SUB>R</SUB>, Z<SUB>V</SUB>, Z<SUB>4</SUB>) are classifiably into one or several defect-free or defect categories including the surface and structural defects. |
