Industrial vision systems for the automatic inspection of precious metals
Objective visual inspections for mirror surfaces and minted designs on precious metals.
The challenges of machine vision in the precious metals sector
The precious metals sector is distinguished by the high economic value of products such as investment bars, medals, and commemorative coins, products that require aesthetic perfection, i.e., extremely stringent quality requirements.
Shiny, reflective, or satin-finished metal surfaces, or those with potentially fine workmanship, make visual inspection challenging. Minor defects can be immediately visible to the human eye under certain lighting conditions, even when they are hidden among the details of the minted design.
Reducing the subjectivity of evaluations and ensuring qualitative uniformity is possible with an industrial vision system specifically designed for the precious metals sector:
Specialvideo vision systems reconstruct the lighting that highlights potential defects , making them evident in the images captured by the cameras, for automatic quality control results at optimal performance.
For more information, you can read our case history of the coin inspection vision system installed at the Italian Mint.
Vision systems compatible with machine requirements
Industrial vision systems integrate with minting presses and finishing lines, adapting to different product formats, weights, and geometries.
Specialvideo systems implement advanced computer vision. Artificial Intelligence has been applied to the automatic inspection of minted products, specifically to analyze the graphical conformity of the stamped design, while defect detection on uniform surfaces is achieved using algorithms. This hybrid artificial vision system combines the strengths of both technologies to achieve flexibility, robustness, and the ability for customers to configure rejection thresholds.
Control and traceability data management generated by machine vision
Our systems ensure traceability and useful data for process decisions: image collection, production statistics, integration with production plant information systems.
Specialvideo vision systems are equipped with remote connection for teleassistance and continuous monitoring of working conditions and process parameters.
We implement the archiving of inspection images and results, in association with individual pieces and production batches, and support the customer in quality documentation.