Surface defects detection using a 3D vision system

The article discusses usage of an innovative three-dimensional vision system in a quality control process for surface defect detection. A method of 3D image building and selecting cross section profile on 3D images is presented. The article discusses problems connected with the resolution of the 3D vision system, resolution of the laser beam analysis, and resolution connected with the application of the successive height profiles on sample cast planes. On the basis of the model, measurements allowing assessment of dimension parameters and surface defects of a given cast are presented. On the basis of tests and analyses of such a three-dimensional cast model, a range of checks which are possible to conduct using 3D vision systems is indicated.