Advances in camera technology have enabled a significant enhancement of dimensional measurements in plate mills. Slabs and as-rolled and cut-to-size plates can now be measured with a very high spatial resolution while providing more detailed and pinpoint evaluations of the measured data. This has become possible primarily due to the use of special high-resolution cameras and the integration of pre-processing capabilities, without which complex algorithms would not be feasible. On this basis, LAP has developed its new series of Plate Check systems for laser-optical measurements in plate mills. Plate Check measures all relevant dimensions of the rolling stock before it enters the rolling mill, after the rolling mill and all the way down to final inspection, significantly improving the efficiency of high-grade plate production.