| 摘要 |
The invention relates to a method for detecting defects in the walls of hollow glass items that rotate about their longitudinal axis during inspection, which method is characterised by the production of an image series (4) that is binarised using a grey-scale value threshold image (5), wherein the threshold values of the threshold image (5) are measured differently according to the fixed positions of radiation-receiving elements used to display images. The images of the image series (10) formed by binarising the original image series (4) are combined in a histogram (6) that locally adds up the frequency of an occurrence of, inter alia, defect pixels representing static reflections within the sensor regions of the image series (10). Based on this histogram (6), a two-dimensional fade-out mask (12) is formed on which the regions of static reflections are combined, and by means of which the sensor regions (18) of the original image series (4) are masked, such that a masked image series (16) is produced, said series having images, in particular sensor regions characterised in that static reflections are faded out on same, whereby a subsequent flaw-detecting evaluation (17) of the images can be carried out, independent of their sequence. |
