AUTOMATIC INSPECTION OF CRYSTAL GLASSWARE

摘要

This paper presents a new finish check inspection method for detecting defects for crystal glassware. The visual inspection system utilizes the image comparison approach that involves the well-known template matching techniques, where the pattern under test is compared with a reference pattern. The algorithm utilizes tonal measures of mean and deviation of the gray levels, combined with an algorithm that determines the discrimination factor between pattern under test and reference pattern; the tonal measures used for quality control of glass are the average image intensity of each row of the picture and the deviation of the average image intensity of each row from the general mean.