| 摘要 |
PURPOSE: To recognize a defect mark by picking up the entire surface of a slab with a wide-surface camera, picking up one side surface with a narrow- surface camera, inverting the slab, and picking up the entire reverse side and the other side surface, and performing the image processing of each image. CONSTITUTION: A worker places a defect mark on a surface 1a, a reverse side 1b, and side surfaces 1c and 1d of a slab 1 with a white chalk. A wide- surface camera 3 with the total length as its visual field is provided at the upper portion of the surface 1a, and a narrow-surface camera 4 with the side surface 1c as its visual field is provided. The slab 1 is placed on a solvent truck 5 and can be inverted and a driving pulse signal 7 of an encoder mounted to a wheel 6 is inputted to an image processing device 8 along with the image signals of the cameras 3 and 4. For example, the triangle, circle, and square, etc., of the defect mark 2 are recognized while inverting the slab 1. A position signal 8a indicating the position and type of a scratch from the device 8 is inputted to a partial input device for treating the slab 1 with a solvent and a recognition signal from the device 8 is printed by a printer 21 via a personal computer 20. |
