1. A method of analyzing a web of material containing at least two anomalies, comprising: receiving a web of material having upon it regularly spaced fiducial marks that uniquely identify a plurality of distinct positions on the web; imaging at least a portion of the web as part of a first web operation, to provide digital information; processing the digital information with an initial algorithm to identify regions on the web containing the at least two anomalies; recording positional information localizing the identified regions relative to at least one of the fiducial marks; winding the web onto a roll; subsequent to the winding step, as part of a second web operation that is temporally distinguished from the first web operation by at least the winding step, unwinding the web and applying locating marks to the web identifying the position of at least one of the identified regions, using the positional information and the fiducial marks as a guide.