Visual defect detection methods overview

The article is a part of research related to developing a line which automatically identifies defects of workpieces together with technology of their elimination with the aid of stream abrasive treatment at automated stations in industrial conditions. The article presents an overview of visual defect detection methods, including systems based on vision sensors, laser systems, including structured light systems, photogrammetry, and thermal imaging systems. The described methods have been supplemented with examples of tests and experiments involving selected devices.