A surface inspection system is an automated system that inspects the surface quality of materials. It uses a combination of optical sensors to detect surface defects in real time. The sensors can detect a variety of surface features such as roughness, wear, contrast and color. This information is passed to a controller that analyzes the data and makes a decision about the quality of the surface. The results can be displayed in real time and/or stored in a database. A surface inspection system can also be combined with other inspection systems to provide a complete surface inspection.
Defects in the tenth of a millimeter range are detected on fast-moving objects such as a steel strip at up to 3000m/min. The high amount of image data requires fast real-time evaluation on the FPGA of each camera. This reduces the image data many times over and shifts the required high computing power to the cameras.