What is DefFinder®

It is an inspection method developed by ViSCO Technologies. The method of image subtraction (the difference between a standard pattern and an object of inspection) has been developed to enable visual defects such as flaws, dirt, and foreign matter to be stably detected and inspected.

Outline of DefFinder®

By training several non-defective models, DefFinder® enables performance of inspection which absorbs slight variation in non-defective products.

Creation of threshold:
Trains several non-defective models and uses the standard deviation image as the threshold
Alignment using geometric shape pattern matching:
Highly accurate, and can handle changes in rotation, scale, and more
Outline of DefFinder®

* DefFinder® is a registered trademark of ViSCO Technologies Corporation

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  • DefFinder®