| 摘要 |
The invention relates to a method for recognising surface characteristics of metallurgical products, especially continuously cast products and rolled products. According to said method, a defined section of the product surface (12, 12') is irradiated by at least two radiation sources of different wavelengths, from different directions, and the irradiated surface section is optoelectronically detected. Three light sources (21, 22, 23) are oriented towards the product surface (12, 12'), as radiation sources, under the same angle (α), the positions thereof being in three planes (E |
