METHOD AND DEVICE FOR QUANTIFYING A WEAR LEVEL OF A BRISTLE FIELD OF A BRUSH

• Main Authors: Mark, Erwin Paul, Noll, Adrian
• Format: Patent
• Language: English; French; German
• Published: 25.07.2018
• Subjects: BRUSHES; BRUSHWARE; HUMAN NECESSITIES

A method and device for quantifying a wear level of a bristle field of a brush are disclosed comprising a plurality of bristle tufts grouping each a plurality of single bristles, said bristle tufts being distributed over the bristle field, the method comprising the following steps: - recording and storing an image of the bristle field; - converting the image into a gray scale image by use of digital image processing and storing the gray scale image; - converting the gray scale image to at least one binarized image with only two tone values by use of digital image processing, thereby assigning one tone value to bristles and/or bristle tufts visible in the image and the other tone value to the background in the image not showing bristles or bristle tufts, and storing the binarized image; - applying the following evaluation method: determining the geometrical splay of the bristle field (3) by creating a contour image, wherein the contour of the image is determined by edge detection of the grey scale image by use of digital image processing, - comparing the results of the applied evaluation method with reference data of an unused brush and/or of used brushes with determined wear levels to classify the wear level of the bristle field of the brush.