Real-time flatness sensor based on a linear-vision multiprocessor system (RV-05)

There has been an increase in the development of image processing applications in steel industries. In this paper, the authors describe a measurement system to obtain flatness defect indexes of products in hot strip mills. This system has been developed with lasers and linear-scan cameras. Every line scan camera is connected to a line scan processor board. All boards are in an industrial personal computer (industrial-PC) which governs the operation of boards. Moreover, it is possible to use an additional digital signal processor to accelerate the computation of algorithms. Flatness measurement devices, based on the optical triangulation principle, have been installed successfully by some manufacturers e.g. IRSID Lasershape, CRM Rometer, etc