Method for quality testing of brushes, in particular toothbrushes, testing device and brush making machine

A method for quality testing of brushes (2) using a classifier (4), the method comprising:

• producing images of defective brushes (2) of a training data set by producing deliberately defective brushes (2) using a brush making machine (1) which has been deliberately incorrectly adjusted,
• capturing images of the defective brushes (2) using a camera (11) and storing said images in the training data set, and
• configuring the classifier (4) to
• classify the brushes (2) to be checked as defective brushes based on the images of the brushes (2) to be checked, and
• training the classifier (4) using the training data set comprising images of defective brushes (2) before carrying out the quality testing.