Patent ID: 8935104
Filing Date: 2015-01-13
Classification: D06H,G01N

Abstract:
1. A method comprising: imaging a sequential portion of a web to provide digital information; processing the digital information with at least one initial algorithm to identify regions on the web containing anomalies; identifying positions of the anomalies on the web; identifying, based on the positions of the anomalies on the web, a set of the anomalies as repeated anomalies and the remaining anomalies as random anomalies; analyzing, by at least one processor, the digital information for the repeated anomalies with a first defect detection algorithm to determine, based on a first set of characteristics, which of the repeated anomalies represent actual defects for a product; analyzing, by the at least one processor, the digital information for the random anomalies with a second, different defect detection algorithm to determine, based on a second set of characteristics, which of the random anomalies represent actual defects for the product, wherein at least one characteristic is included in both the first set of characteristics and the second set of characteristics, wherein the first defect detection algorithm is configured to apply a first threshold to the at least one characteristic to determine which of the repeated anomalies represent actual defects and the second detection algorithm is configured to apply a second threshold to the at least one characteristic to determine which of the random anomalies represent actual defects, and wherein the first threshold is lower than the second threshold; and converting the web into at least two sheets based on the determined actual defects for the product.