New strategies for measuring and sorting shaped glass stones using image processing

Summary This article aims to propose progressive methods for objectively evaluating significant mechanical and geometrical characteristics of gemstones used for making fashion jewellery. These characteristics significantly affect the overall visual aesthetic look of the respective jewellery stones. Different image processing methods are used in industrial microscopy to design new products. The key aspects for having a successful design is thoroughly analysing the material for possible gem-stone defects and properly defining their behaviour when using different optical systems. Using a high-tech experimental laboratory, the authors carried out a control measurement. The main contribution of this paper is the design, implementation and verification of the functionality of new methods for evaluating the quality of machine cut jewellery stones. These progressive methods have the potential to succeed in industrial microscopy or defectoscopy.