Automatic visual inspection and defect detection on variable data prints

摘要

We present a system for automatic, on-line visual inspec-ntion and print defect detection for variable data printing (VDP). Thisnsystem can be used to automatically stop the printing process andnalert the operator to problems. We lay out the components requirednfor constructing a vision-based inspection system and show that ournapproach is novel for the high-speed detection of defects on variablendata. When implemented in a high-speed digital printing press, thensystem allows a single skilled operator to monitor and maintain sev-neral presses, reducing the number of operators required to run a shopnfloor of presses as well as reduce wasted consumables when a defectngoes undetected